US2215811A - Roof structure and insulating element - Google Patents

Description

Sept 24, 1940- c.- c. FIGGE 2,215,811

Roo1=I STRUCTURE AND INSULATINQ M .xazuummr I-"led June 14, 1957 W1 nass @amm Cw C. F99@ Y elle Patented Sept. 24, 1940 ROOF STRUCTURE AND INVSULATING ELEMENT Carroll C. Fizge, Chicago, Ill.

Application June 14, 1937, Serial No. 148,154

4 Claims.

This invention relates in general to a building structure and Vmore particularly to a structural insulating element which provides both deck and ceiling for a roof structure.

An important object of the invention is therefore in the provision of an improved insulating structural member for use as Va roof deck and ceiling and as an insulation therefor.

A further object of the invention is in the provision of a structural insulating unit adapted to take the place of roof boards now commonly used, and at thesame timeto provide a ceiling and roof surface and an interposed insulationl between them.

A further object of the invention is in the provision of a structural insulating unit for combining a fibrous insulation and a metal stiffening or strengthening structure.

A still further object of the invention is in the provisionof a combined insulating and structural unit for roofs, walls, and the like. adapted to be secured both to wood or steel beams by permanent or removable fastening devices.

Still further objects of the invention are to produce the specific type of structural insulating member herein shown and described, and a composite insulating roof and ceiling made thereoi'.

Other and further objects of the invention will appear hereinafter, the accompanying drawing illustrating preferred embodiments of the invention, and in which Fig. 1 is a perspective of a roof structure constructed of insulating structural units in accordance with the invention;

Fig. 2 is a sectional view of one of the structural units; and

Fig. 3 is a section taken 'on the line II-ll of Fig. 2. i

In applying a roof to a building structure it is common practice to provide metal or wood rafters, to cover the rafters more dr less closely with a wooden deck, and to make this deck waterproof by' covering it with metal or layers of roofing secured together and tothe roof and surrounding wall by a bituminous water-proof coating. This type of roof and ceiling has very little insulation value either for retaining the heat or keeping out the cold, and in order to insulate the roof structure it has been necessary to apply separate insulation either inside or outside at a considerable expense and unnecessary duplication of the structure itself.

The present invention proposes the elimination of the wooden deck structure and the sub- (Cl. 10B-6) stitution therefor of reinforced structural units, each .of which has a high insulating value and although the material contemplated is of a relatively thin or low structural 'strength it is reinforced and strengthened by a thin njietal coating which increases the insulation and the structural strength over that afforded by 'the old wooden roof decks, and combines a high insulating value with aroof or metal surface which may be used either inside or outside of the roof for a ceiling finish of metal or of fibrous material, depending upon the kind of a ceiling desired.

Referring now more particularly to the drawing, an insulating element lnaccordance with the invention comprises strips, Vboards or slabs I5 of insulating material such as cork, wood pulp, straw board, or any fibrous insulating material such as bagasse (Cellotex), shredded Wood, or the like, which of itself usually does not have sufficient structural strength to bear the weight of anyone walking upon the roof, but is of a high heat insulatingquality. To one of these boards is applied a metal sheet I6 which is wrapped around the opposite edges of the board, either covering it completely or if two boards are secured together to form an insulating unit the opposite edges of the metal strip are folded so that fastening nails I1 inserted through the boards for holding them together will also be inserted through the edges of the metal sheet.

If desired the board having the metal coating may be placed below or reversed and placed uppermost and thus applied to the deck or roof structure. The object of this is to provide a metal surface uppermost with a sound deadening ceiling if desired, or to utilize the metal surface for the ceiling and to face the insulating surface upward for the attachment of the waterproofing structure ii' preferred.

In these insulating units the object of the metal reinforcing sheet is both to provide a coating and also to give suflicient structural strength to the unit so that it can be used in place of the ordinary lumber applied to a roof. These units are attached at their ends and between their ends by the fastening nails I1 which hold the parts of the insulating units together or by separate fastening devices 23 which are inserted through the insulation units directly into roof rafters or cross beams 24.

After the rafters or beams have been covered by the insulating units in regular or staggered relation and with either the metal or the sound deadening surface upward, a waterproong cover is commonly applied to the upper or exposed surface consisting of a number of plies or thicknesses 21 of composition roofing which are secured together and to the surface of the units by a bituminous cement which renders them impervious to moisture and makes the roof waterproof. At the edge of the roof this covering is turned upwardly and secured to a wall 28'or any other surrounding structure by a flashing 29 which aids in making the roof waterproof.

While this structure is particularly applicable to flat or nearly flat roof decks it may also be applied to more inclined or angular roofs and may also form the supporting structure for shingles'or tiles of various forms which are usually nailed in place.

In any form or application of the insulating units they may be provided in any desired length and in various forms so that they may be quickly applied and secured to beams, rafters or other supports with either a metal or an insulating surface outermost, and when the fastening devices are inserted through the insulating units they will secure the insulating members and the metal coverings to the supports so that they will have the necessary strength and rigidity for a roof or other deck and will provide not only a top covering but also a pleasing underside or ceiling as well as an insulator for reducing heat and sound transference therethrough.

I claim:

1. A structural insulating unit comprising a pair of boards of insulating material but of relatively low structural strength co-extensive in length and of the same width but placed in overlapping relation to each other at the edges, a thin reinforcing metal coating extending between the boards and overlapping the edges of one of them but leaving the face of the overlapped board substantially free and open to the atmosphere, and fastening means inserted through the boards and through lthe overlapping edges of the sheets for holding them together but leaving the opposite faces of the boards both free and open to the atmosphere.

2. An insulating roof deck element comprising a pair of fibrous insulating boards of similar width and length placed close together, a thin metal reinforcing sheet extending between the boards and extending over the edges of the opposite face of the lower board, leaving the most of the under face thereof exposed, and fastening means inserted through the boards and through the overlapping edges of the sheet to hold the board and sheet together with the boards in offset overlapping relation to each other, the opposite outer faces of the boards being both substantially free and open to the atmosphere.

3. A roof covering structure comprising rafters spaced apart, and a plurality of structural units applied to the rafters, each unit comprising a pair of fibrous insulating boards of relatively low structural strength of similar width and length applied to each other in edge overlapping relation, a metal reinforcing sheet interposed between the boards of each pair and extending over the edges of the opposite face of the lowermost board, and fastening means inserted through the boards and through the said overlapping edges of the metal for attaching the boards of each unit tightly together and for securing the unit to the roof supporting rafters, the outer faces of the boards of each unit being exposed between the rafters.

4. An insulated water-proof roof structure comprisingsupporting rafters spaced apart, a plurality of reinforced insulating units, each comprising two boards of insulating material of insufficient structural strength to form a roof support and a metal reinforcement extending between the boards of each unit and overlapping the edges of the opposite face of the under board as applied to the rafters, the metal reinforcement supplying the necessary structural strength to support the units between the rafters, the units fitting tightly together and overlapping at the edges, means securing the boards of each unit together through the metal sheet and to the spaced rafters at the ends thereof, thus providing an exposed fibrous ceiling, a brous roof deck surface, and an interposed reinforcement, and a water-proofed covering applied over the tops of the units in contact with the exposed fibrous surface thereof and supported thereby.

-. CARROLL C. FIGGE.

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