WO2012170104A2 - Appareils et procédés pour un ensemble de volige, de couche de contrôle de vapeur et d'écran anti-pluie amélioré - Google Patents

Appareils et procédés pour un ensemble de volige, de couche de contrôle de vapeur et d'écran anti-pluie amélioré Download PDF

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Publication number
WO2012170104A2
WO2012170104A2 PCT/US2012/030647 US2012030647W WO2012170104A2 WO 2012170104 A2 WO2012170104 A2 WO 2012170104A2 US 2012030647 W US2012030647 W US 2012030647W WO 2012170104 A2 WO2012170104 A2 WO 2012170104A2
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WO
WIPO (PCT)
Prior art keywords
lath
rain screen
screen assembly
plane
inches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2012/030647
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English (en)
Other versions
WO2012170104A3 (fr
Inventor
David Chris HINES
Wayne Joseph BUONI
Frank Russell FORK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westlake Royal Stone LLC
Original Assignee
Boral Stone Products LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boral Stone Products LLC filed Critical Boral Stone Products LLC
Priority to CA2833334A priority Critical patent/CA2833334A1/fr
Publication of WO2012170104A2 publication Critical patent/WO2012170104A2/fr
Publication of WO2012170104A3 publication Critical patent/WO2012170104A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E04F13/04—Bases for plaster
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70—Drying or keeping dry, e.g. by air vents
    • E04B1/7069—Drying or keeping dry, e.g. by air vents by ventilating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/70—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood
    • E04B2/706—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with supporting function
    • E04B2/707—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with supporting function obturation by means of panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/007—Outer coverings for walls with ventilating means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E04F13/04—Bases for plaster
    • E04F13/047—Plaster carrying meshes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass

Definitions

  • Exterior cladding materials can be used to cover the exterior surfaces formed from various framing structures.
  • Non-limiting examples of exterior cladding materials include masonry products, such as for example, stone and brick and stucco.
  • the exterior building cladding is applied to substructures that are attached to the exterior surfaces of the framing structures.
  • a sub-structure is rain screens.
  • rain screens are configured to create a cavity between the exterior cladding materials and the exterior surface of the framing structure. The cavity allows weather-related moisture to easily pass through and away from the building.
  • laths are materials configured to support mortar or plasterwork.
  • an improved lath and rain screen assembly for fastening to an exterior building surface.
  • the lath and rain screen assembly comprises a rain screen configured to encourage ventilation and drying, and a lath configured to receive at least a portion of a first mortar layer.
  • the rain screen comprises 1) a first substantially planar body, the first body having a nominal thickness and opposing primary planar first and second sides, the first body further defining a first plane; and 2) a second substantially planar body, the second body having a nominal thickness and opposing primary planar first and second sides, the first side being operably connected to the second side of the first body, the second body further defining a second plane, the second plane being substantially parallel to the first plane of the first body.
  • the lath comprises a third substantially planar body having a nominal thickness, the third body being operably connected to the second side of the second body, the third body further defining a third plane spaced apart from and substantially parallel to the first plane.
  • at least the first body of the rain screen and the third body of the lath are spaced apart so as to provide a first intermediate pathway therebetween configured for permitting the passage of liquid water and water vapor.
  • a lath and rain screen assembly for fastening to an exterior building surface.
  • the lath and rain screen assembly comprises a rain screen configured to encourage ventilation and drying, and a lath configured to receive at least a portion of a first mortar layer.
  • the rain screen comprises 1) a first substantially planar body, the first body having a nominal thickness and opposing primary planar first and second sides, the first body further defining a first plane; 2) a second substantially planar body, the second body having a nominal thickness and opposing primary planar first and second sides, the first side being operably connected to the second side of the first body, the second body further defining a second plane, the second plane being substantially parallel to the first plane of the first body; and 3) a fourth substantially planar body, the fourth body having a nominal thickness and opposing primary planar first and second sides, the second side being operably connected to the first side of the first body, the first side defining a fourth plane, the fourth plane being spaced apart from and substantially parallel to the first plane of the first body.
  • the lath comprises a third substantially planar body having a nominal thickness, the third body being operably connected to the second side of the second body, the third body further defining a third plane spaced apart from and substantially parallel to the first plane.
  • at least the first body of the rain screen and the third body of the lath are spaced apart so as to provide a first intermediate pathway therebetween configured for permitting the passage of liquid water and water vapor.
  • the fourth body substantially defines a second intermediate pathway, the second pathway being located substantially between the fourth plane of the fourth body and the first plane of the first body, and the second pathway being configured for permitting the passage of liquid water and water vapor.
  • a method of applying an improved lath and rain screen assembly to an exterior building surface comprises the steps of: A) providing a rain screen configured to encourage ventilation and drying, the rain screen including: 1) a first substantially planar body, the first body having a nominal thickness and opposing primary planar first and second sides, the first body further defining a first plane; and 2) a second substantially planar body, the second body having a nominal thickness and opposing primary planar first and second sides, the first side being operably connected to the second side of the first body, the second body further defining a second plane, the second plane being substantially parallel to the first plane of the first body; B) providing a lath configured to receive at least a portion of a first mortar layer, the lath including a third substantially planar body having a nominal thickness, the third body being operably connected to the second side of the second body, the third body further defining a third plane spaced apart from and substantially parallel to the first plane; and C) providing the lath and rain
  • a method of applying an improved lath and rain screen assembly to an exterior building surface comprises the steps of: A) providing a rain screen configured to encourage ventilation and drying, the rain screen including: 1) a first substantially planar body, the first body having a nominal thickness and opposing primary planar first and second sides, the first body further defining a first plane; and 2) a second substantially planar body, the second body having a nominal thickness and opposing primary planar first and second sides, the first side being operably connected to the second side of the first body, the second body further defining a second plane, the second plane being substantially parallel to the first plane of the first body; B) providing a lath configured to receive at least a portion of a first mortar layer, the lath including a third substantially planar body having a nominal thickness, the third body being operably connected to the second side of the second body, the third body further defining a third plane spaced apart from and substantially parallel to the first plane; C) providing the lath and rain screen
  • Figure 1 is an exploded perspective view of an improved lath and rain screen assembly according to various embodiments
  • Figure 2 is a side view, in elevation, of the lath and rain screen assembly of Figure 1;
  • Figure 3 is a cross sectional side view, in elevation, illustrating the lath and rain screen assembly of Figure 1 installed on exterior building framework and configured to support exterior cladding material in the form of masonry products
  • Figure 4 is a side view, in elevation, illustrating the lath and rain screen assembly of Figure 1 installed on exterior building framework and configured to support exterior cladding material in the form of stucco;
  • Figure 5 is a front view of two drainage and ventilation layers of the rain screen of the lath and rain screen assembly of Figure 1;
  • Figure 6 is a front view of an improved lath of the lath and rain screen assembly according to additional various embodiments.
  • Figure 7 is a front view of the lath and rain screen assembly according to even further various embodiments.
  • lath and rain screen assemblies configured for attachment to an exterior building framework and further configured as a support surface for external cladding materials.
  • lath as used herein, is defined to mean a pattern of material configured to support mortar or plasterwork.
  • drain screen as used herein, is defined to mean an infrastructure positioned on exterior building framework and configured to (1) create a cavity that allows weather-related moisture to easily pass through and away from the building; and (2) provide the potential for ventilation and drying to assist in the removal of both liquid water and water vapor.
  • exital cladding material as used herein, is defined to mean a covering of one or more materials on the exterior of a building.
  • the lath and rain screen assembly 10 is attached to an exterior framework of a building and configured as a support for subsequently installed exterior cladding materials, such as for example, masonry products, stonework or stucco.
  • the lath and rain screen assembly 10 in certain embodiments, further forms one or more air and moisture pathways between the exterior framework of the building and the exterior cladding material.
  • the air and moisture pathways are configured in these embodiments to allow drainage, ventilation, and removal of any air and/or moisture that may exist between the exterior framework of the building and the exterior cladding material.
  • the lath and rain screen assembly 10 can be provided to installers in the form of a roll. As a result, in various embodiments, installation of the lath and rain screen assembly 10 can be as simple as unrolling against and fastening adjacent rows of the lath and rain screen assembly 10 to the exterior framework of a building.
  • the lath and rain screen assembly 10 is formed according to various embodiments from the assembly of a rain screen 12 and a lath 14.
  • the rain screen 12 in various embodiments, includes at least first sheet 15, a second sheet 16, and a third sheet 17.
  • the body of the rain screen 12 can be thought of as being generally planar with a nominal thickness intermediate opposing primary planar first and second sides, with the first and second sides lying in corresponding first and second co-parallel planes.
  • the first sheet 15 of the rain screen 12, according to various embodiments, as shown in Figure 2, may have a thickness 54.
  • the thickness 54 of the first sheet 15 is in a range of from about 0.125 inches to about 0.375 inches. In other embodiments, the thickness 54 of the first sheet 15 may be less than about 0.125 inches or more than about 0.375 inches. In still other embodiments, the thickness 54 of the first sheet 15 may be in a range of from about 0.0625 inches to about 0.50 inches.
  • the first sheet 15 of the rain screen 12 may be formed from a polymer-based material, such as for example polyvinyl chloride.
  • the first sheet 15 may be formed from other polymer-based materials, including the non-limiting examples of polystyrene, polyethylene and polypropylene.
  • the first sheet 15 may be formed from any of a variety of combinations of polymer-based materials, as commonly known and understood in the art.
  • the first sheet 15 may be formed from a plurality of polymer-based fibers 82.
  • the fibers 82 may loosely spun such that they may be loosely intertwined relative to one another so as to create a plurality of apertures 84 positioned throughout the first sheet 15.
  • the spun fibers 82 may be loosely intertwined by drizzling the spun fibers, when in a heated state, over a molded shape (not shown), and subsequently allowing the spun fibers to cool and thus harden into the sheet form, as depicted.
  • the spun fibers 82 may, in still other embodiments, be loosely intertwined by any of a variety of industrial processes, as commonly known and understood in the art. In any of these and still other envisioned embodiments, the degree with which the spun fibers 82 are loosely intertwined may, at least in part, influence the permeability characteristics of the first sheet 15, as described in further detail below.
  • the first sheet 15 may exhibit a substantially planar structural shape. In certain embodiments, as will be described in further detail below, the substantially planar structure enables attachment (e.g., during the manufacturing assembly process) of the first sheet 15 with at least one side of the second sheet 16 of the rain screen 12.
  • the substantially planar structural shape is achieved during the process of forming the first sheet 15, such as, for example, by drizzling the spun fibers 82 of the first sheet 15 over a substantially planar mold (as previously discussed, and not shown).
  • the first sheet 15 may exhibit any of a variety of structural shapes, such as the non-limiting example of a washboard structure, provided any such structural shape is sufficient to provide support for subsequently installed external cladding material, as described in further detail below.
  • the first sheet 15 may be configured for moisture transmission (e.g., drainage and ventilation). That is, the first sheet 15 may be configured to minimally, if at all, impede the flow of gases (e.g. air and moisture) that may be trapped between exterior framework of the building and the second sheet 16 of the rain screen 12, as will be described in further detail below.
  • the first sheet 15 has a permeability value in a range of from about 15 perms to about 35 perms, as determined by water vapor transmission tests, such as, for example Standard E-96. Typical water vapor transmission tests of this nature evaluate the transfer of water vapor through semi-permeable and permeable materials over a period of time.
  • the first sheet 15 may have a permeability rating of less than about 15 perms or more than about 35 perms. In still other embodiments, the first sheet 15 may have any of a variety of commonly considered “very high" permeability ratings, provided such minimally impede the transportation of any trapped gases through and/or along the first sheet 15.
  • the second sheet 16 of the rain screen 12 may have a thickness 75.
  • the thickness 75 of the second sheet 16 is in a range of from about 1/64 inches to about 1/8 inches. In other embodiments, the thickness 75 of the second sheet 16 may be less than about 1/64 inches or more than about 1/8 inches. In still other embodiments, the thickness 75 of the second sheet 16 may be in a range of from about 0.005 inches to about 0.50 inches.
  • the second sheet 16 of the rain screen 12 may be formed from a polymer-based material, such as for example polyvinyl chloride.
  • the second sheet 16 may be formed from other polymer-based materials, including the non-limiting examples of polystyrene, polyethylene and polypropylene.
  • the second sheet 16 may be formed from any of a variety of combinations of materials, as commonly known and understood in the art to substantially retard the transmission of moisture, as will be described in further detail below.
  • the second sheet 16 may be formed from substantially the same material as the first sheet 15 and/or the third sheet 17 of the rain screen 12, while in still other envisioned embodiments the material of any of the three sheets may be substantially different relative to one another.
  • the second sheet 16 may further include any of a variety of materials having a self-sealing property.
  • Such self-sealing properties enable the second sheet 16 of such embodiments to create moisture-tight (e.g., water-tight) seals around any nails and/or nail holes created in the second sheet.
  • the self-sealing material may be the non-limiting example of rubber, although any of a variety of analogous materials, as commonly known and understood in the art.
  • the self-sealing material may be embedded within the second sheet 16 during the manufacturing process, while, in still other embodiments, the self-sealing material may be coated upon or even drizzled over one or more surfaces of the second sheet 16, as may be desired for a particular application.
  • the second sheet 16 may exhibit a substantially planar structural shape.
  • the substantially planar structure enables attachment (e.g., during the manufacturing assembly process) of the second sheet 16 with at least one side of each of the first 15 and the third 17 sheets of the rain screen 12.
  • the second sheet 16 may exhibit any of a variety of structural shapes, such as the non-limiting example of a washboard structure, provided any such structural shape is sufficient to provide support for subsequently installed external cladding material, as described in further detail below.
  • the second sheet 16 may be formed to have substantially the same structural shape as the first sheet 15 and/or the third sheet 17 of the rain screen 12, while in still other envisioned embodiments the structural shape of any of the three sheets may be substantially different relative to one another.
  • the second sheet 16 may be configured for moisture transmission. That is, unlike at least the first sheet 15 and the third sheet 17 (as described in further detail below), the second sheet 16 may be configured to substantially retard the flow of gases (e.g. air and moisture), without requiring the use of a separate vapor or air barrier or an incorporated vapor or air barrier.
  • the second sheet 16 has a permeability value in a range of from about 0.06 perms to about 5 perms, as determined by water vapor transmission tests, such as, for example Standard E-96. Typical water vapor transmission tests of this nature evaluate the transfer of water vapor through semi- permeable and permeable materials over a period of time.
  • the second sheet 16 can have a permeability rating of less than about 0.06 perms or more than about 5 perms.
  • the third sheet 17 of the rain screen 12, according to various embodiments, as shown in Figure 2, may have a thickness 56.
  • the thickness 56 of the third sheet 17 is in a range of from about 0.125 inches to about 0.375 inches. In other embodiments, the thickness 56 of the third sheet 17 may be less than about 0.125 inches or more than about 0.375 inches. In still other embodiments, the thickness 56 of the third sheet 17 may be in a range of from about 0.0625 inches to about 0.50 inches. In certain embodiments, the thickness 56 of the third sheet 17 may be substantially the same as the thickness 54 of the first sheet 15, while in still other embodiments the thicknesses may be substantially different relative to one another.
  • the sheets, 15, 16, and 17, may further, according to various embodiments, have a combined thickness 55 that is in a range of from about 0.375 inches to about 0.625 inches. In other embodiments, the thickness 55 may be approximately 0.50 inches. In still other embodiments, the thickness 55 may be less than about 0.375 inches or more than about 0.625 inches.
  • the third sheet 17 of the rain screen 12 may be formed from a polymer-based material, such as for example polyvinyl chloride. In other embodiments, the third sheet 17 may be formed from other polymer-based materials, including the non-limiting examples of polystyrene, polyethylene and polypropylene.
  • the third sheet 17 may be formed from any of a variety of combinations of polymer-based materials, as commonly known and understood in the art. In any of these and any other envisioned embodiments, the third sheet 17 may be formed from substantially the same material as the first sheet 15 and/or the second sheet 16 of the rain screen 12, while in still other envisioned embodiments the material of any of the three sheets may be substantially different relative to one another.
  • the third sheet 17 may be formed from a plurality of polymer-based fibers 86.
  • the fibers 82 may loosely spun such that they may be loosely intertwined relative to one another so as to create a plurality of apertures 88 positioned throughout the third sheet 17.
  • the spun fibers 86 may be loosely intertwined by drizzling the spun fibers, when in a heated state, over a molded shape (not shown), and subsequently allowing the spun fibers to cool and thus harden into the sheet form, as depicted.
  • the spun fibers 86 may, in still other embodiments, be loosely intertwined by any of a variety of industrial processes, as commonly known and understood in the art.
  • the spun fibers 86 may, according to various embodiments, be spun into relatively thicker straps (not shown), which may in turn be loosely intertwined by any of a variety of industrial processes, as described herein, or otherwise commonly known and understood in the art.
  • the degree with which the spun fibers 86 (and/or straps) are loosely intertwined may, at least in part, influence the permeability characteristics of the third sheet 17, as described in further detail below.
  • the fibers 86 (and/or straps) of the third sheet 17 may be spun, loosely intertwined, and/or drizzled over a mold or pan in substantially the same manner as used to form the first sheet 15 of the rain screen 12, while in still other envisioned embodiments, the manner of formation (e.g., spinning, intertwining, and/or drizzling) 1 of the first and third sheets may be substantially different relative to one another.
  • the third sheet 17 may exhibit a substantially planar structural shape.
  • the substantially planar structure enables attachment (e.g., during the manufacturing assembly process) of the third sheet 17 with at least one side (e.g., that opposite of the side to which the first sheet 15 is attached) of the second sheet 16 of the rain screen 12.
  • the substantially planar structural shape is achieved during the process of forming the third sheet 17, such as, for example, by drizzling the spun fibers 86 of the third sheet 17 over a substantially planar mold (as previously discussed, and not shown).
  • the third sheet 17 may exhibit any of a variety of structural shapes, such as the non-limiting example of a washboard structure, provided any such structural shape is sufficient to provide support for subsequently installed external cladding material, as described in further detail below.
  • the third sheet 17 may be formed to have substantially the same structural shape as the first sheet 15 and/or the second sheet 16 of the rain screen 12, while in still other envisioned embodiments the structural shape of any of the three sheets may be substantially different relative to one another.
  • the third sheet 17 may be configured for moisture transmission (e.g., drainage and ventilation). That is, the third sheet 17 may be configured to minimally, if at all, impede the flow of gases (e.g. air and moisture) that may be trapped between the second sheet 16 of the rain screen 12 and the external cladding material, as will be described in further detail below.
  • the third sheet 17 has a permeability value in a range of from about 15 perms to about 35 perms, as determined by water vapor transmission tests, such as, for example Standard E-96. Typical water vapor transmission tests of this nature evaluate the transfer of water vapor through semi-permeable and permeable materials over a period of time.
  • the third sheet 17 may have a permeability rating of less than about 15 perms or more than about 35 perms. In still other embodiments, the third sheet 17 may have any of a variety of commonly considered “very high" permeability ratings, provided such minimally impede the transportation of any trapped gases through and/or along the third sheet
  • the permeability rating of the third sheet 17 may be substantially the same as that of the first sheet 15 of the rain screen 12, while in still other envisioned embodiments the permeability ratings of the first and third sheets may be substantially different relative to one another.
  • the sheets, 15, 16, and 17, each have a height H and a length L.
  • the height H of each of the sheets, 15, 16, and 17, may be a range of from about 3.0 ft to about 4.0 ft. In other embodiments, the height H of the sheets, 15, 16, and 17, may be less than about 3.0 ft or more than about 4.0 ft. In still other embodiments, the height H of the sheets, 15, 16, and 17, may be in a range from approximately 2.0 ft to about 6.0 ft.
  • the length L of each of the sheets, 15, 16, and 17, is in a range of from about 25.0 ft. to about 100.0 ft.
  • the length L of the sheets, 15, 16, and 17, may be approximately 50.0 ft. In still other embodiments, the length L of the sheets, 15, 16, and 17, may be any desired length based on a variety of considerations such as, for example, the diameter (and potentially weight) of the sheets in a rolled form. In any of these and any other envisioned embodiments, the heights H of the sheets, 15, 16, and 17, may be substantially the same relative to each other, while in still other envisioned embodiments the heights H of the sheets, 15, 16, and 17, may be substantially different relative to one another.
  • the lath 14 of the lath and rain screen assembly 10 includes a sheet 30 having a plurality of spaced apart apertures 32.
  • the sheet 30 and the apertures 32 are generally configured in various embodiments to provide support for subsequently installed external cladding materials.
  • the sheet 30 is formed from a fiberglass-based material such as, for example, alkaline resistant (AR) fiberglass.
  • AR alkaline resistant
  • the sheet 30 may be formed from other materials sufficient to provide a comparable degree of support for subsequently installed external cladding material.
  • the sheet 30 may be formed from a combination (e.g., a blend) of AR fiberglass and poly-based fiber, which provides the requisite degree of support.
  • the sheet 30 may be woven in nature.
  • the sheet may be formed by threading (e.g., weaving) a plurality of individual fibers 31 into a plurality of straps 33, each of the straps comprising a portion of the plurality of individual fibers, as generally shown in Figure 6.
  • each of the straps 33 may then be threaded with a plurality of similarly formed straps 33 to form a mesh or lattice-like structure constituting the lath 14.
  • the weaving of the individual fibers 31 and the plurality of straps 33 relative to one another may be performed sequentially (as described above), or simultaneously, as shown in Figure 6, whereby the individual fibers 31 of respective straps 33 further intertwine adjacently woven straps.
  • specific manner of threading e.g., weaving
  • to form this mesh or lattice-like configuration may be through any of a variety of techniques, as commonly known and understood in the art of weaving.
  • the sheet 30 may have any desired thickness sufficient to provide support for subsequently installed external cladding material.
  • the sheet 30 may have a thickness 76 that is in a range of from about 1/64 inches to about 0.25 inches. In other embodiments, the thickness 76 may be approximately 1/32 inches. In still other embodiments, the thickness 76 may be less than about 1/64 inches or more than about 0.25 inches.
  • an overall thickness 77 of the lath and rain screen assembly 10, namely the summation of the rain screen 12 (e.g., the three combined sheets, 15, 16, and 17) and the sheet 30 of the lath 14 may be in a range from about 0.50 inches to about 0.75 inches. In other embodiments, the overall thickness 77 may be approximately 9/16 of an inch. In still other embodiments, the overall thickness 77 may be less than about 0.50 inches or more than about 0.75 inches.
  • the spaced apart apertures 32 form a mesh or grid structure for the sheet 30, as generally depicted in at least Figures 1 and 6.
  • the apertures 32 may have a generally rectangular shape resulting from the lath 14 being woven into a mesh or lattice-like structure as discussed above.
  • the mesh structure is woven such that the apertures 32 have a major dimension in a range of from about 0.10 inches to about 0.50 inches.
  • the apertures 32 may have a major dimension of less than 0.10 inches or more than about 0.50 inches, depending on the degree of support desired from the assembled lath and rain screen assembly 10.
  • the apertures 32 may have other shapes or configurations such as, for example, the non- limiting options of a circular shape, a triangular shape, or an oval shape.
  • the lath 14 is attached to and supported by a second side (e.g., the right-most side, as depicted in Figure 2) of the third sheet 17 of the rain screen 12.
  • the lath 14 is attached to the first side of the third sheet 17 by a heat bonding process.
  • the lath 14 may be attached to the third sheet 17 by other processes, including the non- limiting examples of adhesives or mechanical fasteners.
  • the respective sheets 15, 16, and 17 of the rain screen 12 may be likewise attached to and supported relative to one another.
  • a first side e.g., the left-most side, as depicted in Figure 2
  • a second side e.g., the right-most side, as depicted in Figure 2
  • the first sheet 15 may be attached to a first side (e.g., the left-most side) of the second sheet 16
  • a second side of the second sheet may further be attached to a first side of the third sheet 17 such that the second sheet 16 is positioned substantially intermediate the first sheet 15 and the third sheet.
  • the sheets 15, 16, and 17 may be attached relative to each other in any of a variety of orders, as may be desired for a particular application.
  • any combination of each of the sheets 15, 16, and 17 may be attached relative to one another by a heat bonding process. In other embodiments, any combination of each of the sheets 15, 16, and 17 may be attached relative to one another by other processes, including the non- limiting examples of adhesives or mechanical fasteners. In these and still other embodiments, it should be understood that one or more of the sheets 15, 16, and 17 may be attached relative to one another by substantially the same process as the lath
  • the lath 14 may be attached to, for example, the third sheet 17.
  • one or more of the sheets 15, 16, and 17 may be attached relative to one another by substantially differently from the process used to attach the lath 14 relative to, for example, the third sheet 17.
  • the lath 14 may be sized such that, when attached to the fibers 86 of the third sheet 17, one corner of every other aperture 32 within a set of four apertures 32 each contacts four adjacently positioned fibers 86. Such is generally depicted in Figure 7 as configuration A, whereby four apertures 32 are positioned substantially within a perimeter defined by four adjacently positioned fibers 86.
  • the lath 14 may be sized such that, when attached to the fibers 86, one corner of every fourth aperture 32 within a set of sixteen apertures 32 each contacts four adjacently positioned fibers 86.
  • the lath 14 may be sized in any of a variety of manners such that any of a variety of numbers of apertures 32 reside within a perimeter defined by four adjacently fibers 86, thereby capturing any of a variety of aperture sizes, as may be desired or envisioned for a particular degree of support inherent to the lath 14.
  • the building 40 includes an exterior facing wall 42.
  • the wall 42 is configured to define interior space within the building 40 and to support additional structural components.
  • the wall 42 according to certain embodiments is formed from a plurality of framing members 44 extending in both vertical and horizontal directions.
  • the framing members 44 are made of wood.
  • the framing members 44 can be made of other desired materials, including the non-limiting example of steel.
  • the framing members 44 may have any of a variety of desired dimensions.
  • the exterior wall 42 is covered by exterior sheathing 46 attached to an exterior side of the framing members 44.
  • the exterior sheathing 46 is configured to provide rigidity to the exterior wall 42.
  • the exterior sheathing 46 is further configured to provide a surface for sub-structures and exterior cladding material.
  • the exterior sheathing 46 is made of oriented strand board (OSB).
  • OSB oriented strand board
  • the exterior sheathing 46 may be made of other materials, such as for example the non-limiting options of plywood, waferboard, rigid foam, or fiberboard, so long as such options provide a sufficient degree of rigidity to the exterior wall 42 and a surface for receiving sub-structures and exterior cladding material.
  • the exterior sheathing 46 according to various embodiments has an exterior surface 48.
  • a moisture resistant layer 50 may also be attached to the exterior surface 48 of the exterior sheathing 46.
  • the moisture resistance layer 50 is configured to substantially retard the flow of gases (e.g. air and moisture) through and between the exterior of the building and the interior of the building.
  • gases e.g. air and moisture
  • a moisture resistance layer 50 is PTNKWRAP ® marketed by Owens Corning Corporation, headquartered in Toledo, Ohio.
  • the moisture resistant layer 50 may be traditional building paper.
  • a moisture resistant layer 50 may not be present at all.
  • the moisture resistant layer 50 may have any desired thickness and any desired permeability value.
  • the moisture resistant layer 50 is fastened to the exterior surface 48 of the exterior sheathing 46 by staples (not shown).
  • the moisture resistant layer 50 may be fastened to the exterior surface 48 of the exterior sheathing 46 by any of a variety of other desired methods or means.
  • the lath and rain screen assembly 10 is positioned over the moisture resistant layer 50 and fastened to the exterior sheathing 46 using a plurality of spaced apart fasteners 52.
  • the fasteners 52 are staples.
  • the fasteners 52 can be spaced apart a distance in a range of from about 4.0 inches to about 8.0 inches. In other embodiments, the fasteners 52 can be spaced apart a distance less than about 4.0 inches or more than about 8.0 inches. In still other embodiments that do not incorporate the moisture resistant layer 50, the fasteners 52 can be used to attach the lath and rain screen assembly 10 directly to the exterior sheeting 46.
  • various embodiments of the lath and rain screen assembly 10 include a first sheet 15 having a thickness 54, which itself at least partially defines a first space or cavity 94 (see, in particular, Figure 2) between the moisture resistant layer 50 (or, alternatively, the exterior sheathing 46) and the second sheet 16.
  • the first space 94 provides for moisture management behind the second sheet 16 of the lath and rain screen assembly 10 in two forms.
  • the first space 94 creates a pathway for moisture to pass through and/or exit the first space flowing in the direction indicated by the leftmost arrow Dl (see, in particular, Figure 3).
  • the first space 94 provides a pathway for ventilation air to pass through and/or exit the first space flowing in the direction indicated by the leftmost arrow D2.
  • the first space 94 may, alternatively or concurrently, provide for moisture management in the direction indicated by the leftmost arrow D2 with ventilation provided in the direction indicated by the leftmost arrow Dl.
  • the first space 94 may provide moisture management and ventilation features in any of a variety of envisioned combinations of the directions indicated by the leftmost arrows Dl and D2.
  • the first space 94 has a width, as generally depicted in Figure 3, in a range of from about 0.125 inches to about 0.375 inches. In other embodiments, the width of the first space 94 may be less than about 0.125 inches or more than about 0.375 inches. In still other embodiments, the width of the first space 94 of the first sheet 15 may be in a range of from about 0.0625 inches to about 0.50 inches. In the illustrated embodiment, the width of the first space 94 is approximately 0.25 inches. In any of these and other envisioned embodiments, it should be understood that the width of the first space 94 is substantially the same as the thickness 54 of the first sheet 15, although in further alternative embodiments, the width of the first space and the thickness of the first sheet may be substantially different.
  • various embodiments of the lath and rain screen assembly 10 include a third sheet 17 having a thickness 56, which itself at least partially defines a second space 96 between the second sheet 16 and the lath 14.
  • the second space 96 in an analogous fashion as described above with respect to the first space 94, provides for moisture management between the lath 14 and rain screen 12 in two forms.
  • the second space 96 creates a pathway for moisture to pass through and/or exit the second space flowing in the direction indicated by the rightmost arrow Dl.
  • the second space 96 provides a pathway for ventilation air to pass through and/or exit the second space flowing in the direction indicated by the rightmost arrow D2.
  • the second space 96 may, alternatively or concurrently, provide for moisture management in the direction indicated by the rightmost arrow D2 with ventilation provided in the direction indicated by the rightmost arrow Dl.
  • the second space 96 may provide moisture management and ventilation features in any of a variety of envisioned combinations of the directions indicated by the leftmost arrows Dl and D2.
  • the second space 96 is configured in certain embodiments to create a standoff to accommodate a thickness for a first layer 58 of subsequently installed mortar such that the mortar substantially encapsulates the lath 14.
  • the thickness 56 of the third sheet 17 is in a range of from about 0.125 inches to about 0.375 inches. In other embodiments, the thickness 56 of the third sheet 17 may be less than about 0.125 inches or more than about 0.375 inches. In still other embodiments, the thickness 56 of the third sheet 17 may be in a range of from about 0.0625 inches to about 0.50 inches
  • a width of the second space 96 is in a range of from about 0.125 inches to about 0.375 inches, sufficient to accommodate a thickness of a first layer 58 of mortar (e.g., a scratch coat layer) of about 0.50 inches, thereby encapsulating the lath 14.
  • the width of the second space 96 may be less than about 0.125 inches or more than about 0.375 inches and may be configured to accommodate a thickness of the first layer 58 of mortar of more or less than approximately 0.50 inches.
  • the width of the second space 96 is approximately 0.25 inches, thereby accommodating a thickness of the first layer 58 of mortar sufficient to substantially encapsulate the lath 14.
  • the first layer 58 of mortar may be of sufficient thickness to totally encapsulate the lath 14. In still other embodiments, the first layer 58 of mortar may be of sufficient thickness to totally encapsulate the lath 14 and approximately 90% of the thickness 56 of the third sheet 17 of the rain screen 12. Any even further envisioned embodiments, the first layer 58 of mortar may be of sufficient thickness and/or the width of the second space 96 and/or the third sheet 17 may be appropriately dimensioned such that the first layer of mortar substantially encapsulates the lath 14 and at least a portion of the third sheet 17.
  • a combined width (not numbered, but visible in at least Figure 2) of the first space 94 and the second space 96 may be in a range of from about 0.25 inches to about 0.75 inches. In other embodiments, the combined width may be less than about 0.25 inches or more than about 0.75 inches. In the illustrated embodiment, the combined width is approximately 0.50 inches.
  • the first layer 58 (e.g., the scratch coat layer) of mortar substantially encapsulates (e.g., envelops) the lath 14.
  • the first layer 58 of mortar fully encapsulates the lath 14.
  • the first layer 58 of mortar may fully encapsulate the lath 14 and also at least a portion of the third sheet 17 of the rain screen 12.
  • the first layer 58 of mortar when allowed to cure, forms a base for a second layer 60 of mortar.
  • the second layer 60 of mortar is traditionally known as a "brown coat" and is used in various embodiments as a bedding layer for masonry products 62.
  • the first and second layers, 58 and 60, of mortar can be any desired composition of mortar.
  • a rough texture may be applied to one or both of the first and second layers, 58 and 60, of mortar using, for example, a stucco comb or other comparable tools and methods.
  • the lath and rain screen assembly 10 illustrated in Figure 3 provide support for the masonry products 62, it should be appreciated that in still other embodiments, the lath and rain screen assembly 10 can provide support for other exterior cladding materials.
  • a lath and rain screen assembly 110 as shown in Figure 4 is configured to provide support for exterior cladding material in the form of stucco.
  • the lath 114, the first sheet 115, the second sheet 116, and the third sheet 117 of the lath and rain screen assembly 110 are substantially the same, or substantially similar in structure, shape, and/or configuration as the lath 14, the first sheet 15, the second sheet 16, and the third sheet 17 of the lath and rain screen assembly 10 illustrated in Figure 3 and discussed above.
  • the lath 114, the first sheet 115, the second sheet 116, and the third sheet 117 of the lath and rain screen assembly 110 may be substantially different in structure, shape, and/or configuration from the lath 14, the first sheet 15, the second sheet 16, and the third sheet 17 of the lath and rain screen assembly 10 illustrated in Figure 3 and discussed above.
  • a portion of a building 140 is generally depicted as including an exterior facing wall 142 formed from a plurality of framing members 144.
  • the exterior wall 142 may be covered by exterior sheathing 146 attached to an exterior side of the framing members 144.
  • no exterior sheathing 146 may be incorporated.
  • the exterior sheathing has an exterior surface 148.
  • the portion of the building 140, exterior wall 142, framing members 144 and exterior sheathing 146 are substantially the same as, or substantially similar to, the structure, shape, and/or configuration of the portion of the building 40, exterior wall 42, framing members 44 and exterior sheathing 46 illustrated in Figure 3 and discussed above.
  • the portion of the building 140, exterior wall 142, framing members 144 and exterior sheathing 146 can be substantially different in structure, shape, and/or configuration from that of the portion of the building 40, exterior wall 42, framing members 44 and exterior sheathing 46 illustrated in Figure 3 and discussed above.
  • a moisture resistant layer 150 may be fastened to the exterior surface 148 of the exterior sheathing 146 by staples (not shown).
  • the lath and rain screen assembly 110 may be positioned over the moisture resistant layer 150 and fastened to the exterior sheathing 150 using a plurality of spaced apart fasteners 152.
  • a first layer 158 of mortar is applied such that it substantially encapsulates (e.g., envelops) the lath 114 such that when the first layer 158 is allowed to cure, it forms a base for a second layer 160 of mortar.
  • the moisture resistant layer 150, lath and rain screen assembly 110, first layer 158 of mortar and second layer of mortar 160 are substantially the same, or substantially similar in structure, shape, and/or configuration as the moisture resistant layer 50, lath and rain screen assembly 10, first layer 58 of mortar and second layer of mortar 60 illustrated in Figure 3 and discussed above.
  • the moisture resistant layer 150, lath and rain screen assembly 110, first layer 158 of mortar and second layer of mortar 160 may be substantially different in structure, shape, and/or configuration from the moisture resistant layer 50, lath and rain screen assembly 10, first layer 58 of mortar and second layer of mortar 60 illustrated in Figure 3 and discussed above.
  • the second layer 160 of mortar forms a base for a layer of stucco material 164.
  • the layer of stucco material can have any desired composition and can be any of a variety of desired thickness.
  • the first step of the method provides for positioning of the lath and rain screen assembly 10 adjacent an exterior sheathing 46 on a building portion 40.
  • the lath and rain screen assembly 10 may be positioned adjacent a moisture resistant layer 50 that has been previously attached to the exterior sheathing 46.
  • the positioning of the lath and rain screen assembly 10, whether adjacent the exterior sheathing 46 or the moisture resistant layer 50 involves positioning the first sheet 15 of the rain screen 12 (see Figure 2) adjacent the exterior sheathing or the moisture resistant layer.
  • the second sheet 16 of the rain screen 12 is spaced from the exterior sheathing or the moisture resistant layer.
  • the positioning of the first and second sheets, 15 and 16, of the rain screen 12 create a first space 94 substantially between the exterior sheathing (or the moisture resistant layer, if present) and the second sheet 16, as discussed above in further detail.
  • the next step of the method involves the application of a first layer 58 of mortar to the lath 14 such that the first layer substantially encapsulates the lath 14, as generally depicted in Figure 3.
  • the method involves the application of a sufficient amount of mortar as the first layer 58 to totally encapsulate the lath 14.
  • the method involves the application of a sufficient amount of mortar as the first layer 58 to totally encapsulate the lath 14 and additionally encapsulate at least a portion of the thickness 56 of the third sheet 17 of the rain screen 12.
  • the method involves the application of a sufficient amount of mortar as the first layer 58 to encapsulate the lath 14 along with approximately 90% of the thickness 56 of the third sheet 17 of the rain screen 12.
  • the method further comprises applying a second layer 60 of mortar after allowing the first layer 58 to cure.
  • the second layer 60 provides a bedding layer for subsequent application of one or more masonry products 62.
  • the installation of a lath and rain screen assembly 110 may be accomplished in substantially the same manner as described above with respect to installation of the lath and rain screen assembly 10.
  • the installation of the lath and rain screen assembly 110 may be at least partially, or even substantially different than the manner as described above with respect to installation of the lath and rain screen assembly 10.
  • the lath and rain screen assemblies, 10 and 110 advantageously provide several benefits over traditional stand alone rain screens and laths, although all of the benefits may not be present in all embodiments.
  • the lath and rain screen assemblies, 10 and 110 combine the traditional stand alone lath and the stand alone rain screen into a single integrated product, thereby allowing for reduced installation time and installation cost.
  • the lath and rain screen assemblies, 10 and 110 create at least one pathway between the moisture resistant layer and the sheet.
  • traditional rain screens may be cumbersome to install and inherently prone to trapping moisture between the moisture resistant layer and the rain screen.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Building Environments (AREA)

Abstract

L'invention porte sur un ensemble de volige et d'écran anti-pluie amélioré pour la fixation à une surface de bâtiment extérieure, ou analogue. L'ensemble de volige et d'écran anti-pluie comprend un écran anti-pluie configuré de façon à encourager la ventilation et le séchage, et une volige configurée de façon à recevoir au moins une partie d'une première couche de mortier. Dans différents modes de réalisation, l'écran anti-pluie comprend un premier et un second corps, définissant des premier et second plans co-parallèles respectifs, la volige comprenant un troisième corps espacé vis-à-vis d'au moins le premier plan et sensiblement parallèle à celui-ci. Dans certains modes de réalisation, le premier corps et la volige sont mutuellement espacés, de façon à produire un premier trajet intermédiaire. Dans certains modes de réalisation, le premier trajet intermédiaire est au moins partiellement défini par le second corps de l'écran anti-pluie. L'invention porte également sur un procédé d'application de l'ensemble de volige et d'écran anti-pluie amélioré.
PCT/US2012/030647 2011-06-06 2012-03-27 Appareils et procédés pour un ensemble de volige, de couche de contrôle de vapeur et d'écran anti-pluie amélioré Ceased WO2012170104A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2833334A CA2833334A1 (fr) 2011-06-06 2012-03-27 Appareils et procedes pour un ensemble de volige, de couche de controle de vapeur et d'ecran anti-pluie ameliore

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US13/154,093 2011-06-06
US13/154,093 US20120304565A1 (en) 2011-06-06 2011-06-06 Apparatuses and Methods for an Improved Lath, Vapor Control Layer and Rain Screen Assembly

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WO2012170104A2 true WO2012170104A2 (fr) 2012-12-13
WO2012170104A3 WO2012170104A3 (fr) 2013-01-31

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