JPH02209545A - Roof structure and construction method of roof - Google Patents

Abstract

PURPOSE:To improve water resistance and weather resistance by providing a first roof plate having side connecting parts on both side edge parts of a face plate part, and a second roof plate having the similar side connecting parts and having an inclined surface part and a support end surface formed between the side connecting parts. CONSTITUTION:On the both end parts of a first roof plate 10 situated on the top part of a roof, an eaves side end part 14 mainly consisting of a face plate 12 having a circular form corresponding to the roof shape is formed. On the both side end parts of the face plate part 12, side connecting parts 13 for connecting other roof plates 10 in the main house direction are stood up in parallel to each other. Then, the flat face plate part 12 and the side connecting parts 13 are formed on a second roof plate 11, and a return gradient of a determined angle is given to the face plate part 12 to form an inclined surface part 16. A bottom part 17, a ridge side end part 15, a support end face 15 and a flange face 19 are formed from the middle of the inclined part 16. The face plate part 12 rear surface of the ridge side roof plate 10 is supported by the flange face 19 of the ridge side roof plate 11 and superposed on the inclined face part 16 of the roof plate 11 to lay the roof plates 10, 11 in the eaves ridge direction.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roof structure having a curved surface shape applied to a gymnasium, etc., and a method of constructing such a roof by covering a large number of roof sheets. It is related to.

[Prior Art] As a roof structure formed by covering a large number of roof plates, those shown in Figs. f516 to 18 are conventionally known.

To explain this, the roof plate (1) constituting the roof structure shown in FIG. An eave side joint (3) and a line side joint (4) are formed in a bent form, and each joint (3).

(4) are bent forward and backward, respectively, so that they are approximately parallel to the face plate (2), and the eaves side 7 lung portion (
3F) and a line side flange portion (4F) are formed.

In order to form a roof by vertically roofing such roof plates (1), the line side joints of the roof plates (1) located on the eaves side must be placed on a basic structure consisting of rafters, roofing boards, etc. (not shown). On the flange surface (4F) of (4), the roof plate located on the ridge side (
Place the back part of the eave side joint 1\1s (3) in 1) and overlap so that the flange surface (3F) of the eave side joint (3) is seated on the upper surface of the base of the line side joint (4). and fix them using nails or other fixing devices. By performing such work from the eaves side to the ridge side, or from the ridge side to the eaves side, and joining a plurality of roof panels (1), the roof structure as shown is formed.

In this roof structure, adjacent roof plates (1
) is roofed so that the eave side joint (3) and the line side joint (4) are in contact with each other. As shown in Figure 'S17, there is also one in which a gap (5) is provided between each of the joints (3) and (4).

In addition, in the roof board (6) shown in Fig. 18, the eave side end of the face plate (7) is folded back to the back side, and the ridge side end is folded back to the front side to join the eave side. (8) and a line side joint (9) are formed, and the roof plates (6) adjacent to each other in the direction of the eave ridge have a folded eave side joint (8) and an eave side joint (8) as shown in the figure. The connection is made by interlocking and overlapping the line side joint portion (9) of another roof sheet (6) adjacent to the side.

Although not shown, each of the roof plates (1) and (6) has a constant width in the direction of the main building (direction perpendicular to the drawing), and the lateral connecting parts formed on both side edges of the face plate part A roof of the required dimensions is also formed in the direction of the main building by connecting them via hangers, covers, etc. as necessary.

[Problems to be Solved by the Invention] By the way, when trying to form such a roof structure as a dome-shaped roof consisting of a curved surface, which is often used as the ridge of large buildings such as buildings, there are problems with weather resistance and construction work. Many problems arise in terms of sexuality.

In other words, when forming a roof by covering a large number of roof plates with a certain fixed size, it goes without saying that the larger the roof, the greater the number of roof plates and the number of joints where the roof plates connect in the direction of the eaves. This is also called a ``seam part.'' The capillary action that occurs makes rain more likely to leak. Furthermore, since the number of steps and irregularities occurring in the seam portions increases, a problem arises in that an orderly appearance cannot be obtained.

To solve this problem, the roof should be covered with long roofing boards that are as large as possible, but when covering a curved roof with such long materials, The larger the dimensions, the more advanced technology is required to treat the water and waterproofing at the joints, but in recent years there have been fewer construction engineers who can skillfully handle the process, and as a result, leaks are more likely to occur. There is a risk.

In Japan, where many houses are crowded together, the roads are poor and there are many narrow roads, so there is also a social constraint that it is difficult to transport long materials using large trucks.

The present invention has been made in view of these conventional problems, and an object of the present invention is to provide an MIt roof structure that is excellent in waterproofness and weather resistance, and at the same time can form a curved roof with a beautiful appearance.

The present invention also provides a roof construction method that allows even non-skilled engineers to easily form such a roof structure.

Means for Solving the Problem L In order to achieve the above object, the roof structure according to the present invention comprises the following roof. That is, both sides of the face plate forming the roof surface are provided with lateral connection parts with other adjacent roof plates, and have an outer shape corresponding to the shape of the roof top, and have eave trllI ends at both ends. a first roof plate that is similar to the above, and a sloped surface part that is provided with side connecting parts on both side edges of the face plate part and has a return slope toward the line side from the middle of the face plate part, and a ridge side end. A second roof plate is provided between the side connecting portions on both sides, and a support end surface having a flange surface located at approximately the same height as the roof surface is provided at the upper end of the second roof plate. The roof structure is such that a plurality of second roof panels are connected to both ends of the f51 roof panel in the direction of the eaves.

Further, each roof plate connected in the eave ridge direction overlaps the eave side end of the roof plate located on the line side with the vicinity of the start of the return slope of the slope part of the other roof plate located on the eave side, and The back surface of the face plate part of the ridge side roof plate is supported by the flange surface of the eave side roof plate, and between the inclined surface part and supporting end face of the eave side roof plate and the face plate part of the ridge side roof plate that covers this from above. The roof structure has a volumetric space defined in the roof.

Furthermore, as a method of constructing the roof as described above, in the present invention, first, the first roof plate similar to the if description and the roof plate of PIS2 are set as n1, and then the first roof plate or the roof plate located on the line side is The eave side end of the roof board of ttS2 is connected to the second roof plate located on the eave side.
overlap near the start of the return slope of the sloped surface part of the roof board, and support the back surface of the face plate part of the roof board located on the line side by the flange surface of the roof board located on the eave side, and on the line side A plurality of roof plates are laid in the direction of the eaves by overlapping the face plate part of the roof plate located on the sloped surface part of the roof plate located on the eaves side.

[Function] The roof according to the present invention? In 1W construction, multiple roof panels are installed by aligning the eave side end of the other roof panel located on the line side with the return slope start position of the slope section, and supporting the back surface on the flange surface. Because of the structure, a volumetric space is defined between the sloped surface part and the eave side end of the other tail plate connected to the line side, and the roof is filled by capillary action from the gap between each roof plate. This space reliably prevents rainwater from entering inside. Therefore, there is no need to prepare a long roof plate, and even when a large dome-shaped roof is formed, excellent weather resistance is achieved without causing rain leaks or condensation.

In addition, the roof panels that are connected in the direction of the eave ridge are supported by the flange surface raised from the ridge side end of the face plate part, and the eave side end of the roof panel is placed on the eave side at the point where the return slope starts. Since the roof panels are overlapped with the face plate portions of the roof panels, each roof panel forms the same surface in the direction of the eaves, that is, there is no unevenness or step difference in the seam portion as in the conventional example.

On the other hand, when constructing such a roof, in the roof construction method according to the present invention, the connection of the roof plates in the direction of the eave ridge is as described above. The eave-side end of the first roof sheet (in some cases, the second roof sheet in other areas) is overlapped with the vicinity of the starting point of the return slope of the sloped surface portion of the second roof sheet ■ Positioned on the ridge side Supporting the back side of the face plate of the roof plate located on the eave side with the flange surface of the roof plate located on the eave side ■Work of overlapping the face plate part of the roof plate located on the ridge side with the sloped surface of the roof plate located on the eave side In short, there is no need to perform any special processing or engagement operations on the roof shingles, and there is no need to use long roof shingles to prevent leaks. Therefore, even if it is a large dome-shaped roof, it is possible to easily and accurately form a roof with excellent weather resistance and appearance as described above.

[Example] Hereinafter, the method for constructing a V-shaped roof according to the present invention will be described with reference to the drawings as an example in which the construction method is applied to a so-called semicylindrical large-scale building. Note that in each of the drawings of the embodiments, corresponding parts are denoted by the same reference numerals.

FIGS. 1 and 2 each show a roof structure according to an embodiment of the present invention, and FIGS. 3 and 4 each show a roof plate used in the roof structure.

In the f51 diagram, (24) is C, which forms the foundation of the roof.
A large number of purlins made of channel steel are arranged at approximately equal intervals along the ring direction of the curved roof surface. Further, (25) is a base material laid over the entire surface of the main building material, and (27) is a metal rafter. Moeki - f genus rafters (
27) are arranged in large numbers on the purlin material (24) so as to be perpendicular to the purlin material (24) and at predetermined intervals in the direction of the purlin.

21: As shown in Fig. 1, the rafters (27) are smoothly bent to form an arc shape when viewed from the front, matching the outer shape of the roof. Second roof board (10)
, (11) is covered.

The first roof plate (10) located at the top of the ridge has an arc-shaped face plate portion (10) corresponding to the roof shape as shown in FIG.
12) as the main body, with both ends covered with ttS2 roof panels (
11) is connected to the eaves side end (14). Further, at both ends of the face plate part (12) in the direction of the main building, side connecting parts (13) for connecting other roof boards (10) in the direction of the main building are raised parallel to each other. .

Next, the second roof plate (11), this roof plate (1
1), as shown in FIG.
A flat face plate part (1) having the same width in the direction of the main building as 0)
2) and side connecting portions (13) that stand up parallel to each other at both side edges thereof, and are formed to have the same front cross-sectional shape as the first roof plate (10).

The face plate part (12) starting from the eave side end part (14) of this second roof plate (11) is sloped with a return slope so that it slopes downward at a predetermined angle from the part on the way to the stock system. The inclined surface part (16) becomes a bottom part (16) which becomes parallel to the face plate part (12) again from the middle
17) and continues to the ridge end (15).

Further, the ridge side end (15) has a support end surface (18) that stands up at the rear end of the bottom surface section (17), and a face plate portion in which the upper edge of this support end surface (18) is bent in a stock pattern. (
12) and a flange surface (19) formed so as to be parallel to and located at a height of 100 degrees. Although not shown, the flange surface (19) may be bent toward the eaves.

In addition, in the above-mentioned m2 roof board (11), the side connecting parts (13) on both sides are the same from beginning to end from the eave side to the stock system along the slope part (16) and the bottom part (17). Although the side connecting portion (13) is formed to have a rising height, the detailed configuration of the side connecting portion (13) is not an essential part of the present invention, and will be described later as another embodiment.

Each of the above-mentioned roof plates (10) and (11) is arranged in a circular arc as shown in Fig. 1. Eleven roof plates (10) are located at the top of the roof, and the necessary number of roof plates (10) are placed at the top of the roof on both sides in the direction of the eaves. Second shingle (
11) The roof is composed of a vertical roof that connects.

Figure 5 shows the details of the connecting part when the roof plates (10) and (11) are vertically roofed in this way. Eave side connection g (1) of other roof board (10) or (11) connected to the system
4) is positioned so that it overlaps with the bent part (point P) from the face plate part (12) to the inclined surface 8NS (16) or the part of the stock system slightly more than this, and at this time, the roof located on the stock system In addition to the above-mentioned point P, the board (10) or (11) is attached to the eave side a root board (11) at the back part slightly on the line side from this point.
is supported on the flange surface (19) of. At this time, the side connecting parts (13) that stand on both sides of the face plate part (12)
Also, since the part transitioning from the face plate part (12) to the inclined surface part (16) is inclined along the inclined surface 1 (16), other roof panels (10) connected to the line side or (
The eave side of the side connecting portion (13) of 11); overlaps easily with the 4 parts.

In addition, each of the roof plates (10) and (11) is vertically roofed in the direction of the eaves so as to form the same plane as described above, and in the direction of the main house, each of the adjacent roofs is Lateral connections of plate (10) or (11) (
13) and (13) are mutually connected via a hanger member (40) and a cover cap member (30) arranged at equal intervals. In the example shown in FIG. 14, the hanger member (40) is formed as a long material by aluminum extrusion or the like, and is interposed between the cover cap member (30) having an inverted U-shaped cross section and fitted from above. , roof shingles (
By sandwiching the side connecting portions (13) of 10) and <11), the connecting and fixing functions are achieved.

Next, to explain the function or effect of the m-roofed roof mvI structure as described above, each roof board (10), (
11), as shown in FIG. 5, a gate-shaped part consisting of a slope part (16), a bottom part (1)), and a support end face (18) of the roof plate (11) located on the eave side; This is covered from above and connected to the stocking house m1 (10) or (
A volumetric space (2o) is defined between the base plate (11) and the face plate (12). At this time, the side portions of the volume space (2o) are partitioned by the side connecting portions (13) on both sides.

The volume space...1 part (20) is the eave side j [1 (14) of the ridge side roof board (1o) or (11), and each 88 Jfi (1
Since there is a large space between the flange (19) which is the actual support and connection part of (1) and (11), rainwater falling on the roof during rain may temporarily fall on the eave side edge (14).
Volume space part (20) through the gap between and face plate part (12)
Intrusion into 1. Even if this happens, there is no risk that rainwater will accumulate in the volumetric space (2o) or reach the flange surface (19), and therefore rainwater is reliably prevented from entering the back side of the roof.

In addition, the eave side ends (14) of the ridge side roof plates (10) and (11)
), the face plate part (12) is in contact with the face plate part (12) of the eave side roof board (11) slightly behind the end part (14).
Since it is supported by the flange surface (19) located at a height of
There is no unevenness at the contact point (point P) with
That is, as shown in FIG. 5, a smooth and orderly roof surface is formed in the direction of the eaves.

Furthermore, this roof structure with excellent waterproofness does not require the use of long roof plate members, that is, each roof plate (10) and (
11) can be miniaturized, so it is easy to handle and work in narrow spaces, and there are no transportation problems. On the other hand, as mentioned above, the method for constructing a roof using the roof sheets (10) and (11) When roofing, there is basically no need to perform any special processing or engagement operations on the roof sheets (1oL (11)), so even if it is a large dome-shaped roof, This makes it possible to easily and accurately form a roof with excellent weather resistance and appearance.Furthermore, in the roof lff1 structure formed in this way, there is no need to prepare long roof sheets as described above. Since there is no roof, even non-skilled engineers can easily build a large dome-shaped roof.

Next, some partially different embodiments of the roof structure will be described.

Figure m6 is an example in which the length of the second roof plate (11) and the inclined surface portion (16) in the eave ridge direction is increased. If the dimension from point P to the end of ridge I (15) is the same as in the one in Fig. The larger the
The angle of the return gradient becomes gentler.

If the slope is made gentle in this way, even if the position of the eave side edge (14) shifts slightly in the direction of the eave ridge due to dimensional errors when the roof is installed, the eave side edge (14) due to this 1
4) Since the change in appearance can be suppressed to a small level, it is advantageous in improving the appearance.

In addition, as shown in FIG. 7, an inclined surface portion (1
6) and the eave side flange surface (21
) is folded back, the seating and adhesion of the eaves side end (14) to the inclined surface part (16) at point P will be improved.
Weather resistance and appearance finish are further improved. In addition, in this example, as shown in the figure, a water honey material (made of high-density bonno etc.) is placed behind the eave side flange surface (21).
22) is interposed. This water honey material (22) supplementarily supports the face plate part (12) of the ridge side roof board (10) or (11) on the bottom part (17), and at the same time supports the eave side end (14) in front of it. ) When rainwater or the like enters from the flange surface (19), it functions to block the volume space (20) in the middle so that it does not turn into water droplets and water vapor and go around to the back side of the flange surface (19). That is, together with the eave side flange surface (21), the appearance, finish, and weather resistance are further improved by this honeycomb material (22).

Next, Fig. Pt58 to Fig. 12 show other embodiments that are similar to the front shape of the roof panel (10) or (11).

Figures 8 to 10 show the side connecting parts (13) having different shapes; Figure 8 shows the shape with the upper end folded back inward, and Figures 9 and 10 show the middle part. As can be seen in these figures, the shape of the side connecting parts (13) can be changed depending on the hanger or cover cap member (see Fig. 14) that connects them. Can be set.

On the other hand, although each of the above-mentioned embodiments shows an example in which the face plate portion (12) is flat, the present invention is not limited to such a flat shape. As shown in Figure 11, the face plate part (12) seen from the front.
is a roof board (10) with a rectangular and wavy cross section.

(11), or one with a round and wavy cross section as shown in Fig. 12 can be implanted, and by applying these roof plate shapes, the roof plate (10) can be formed.

(11) It is possible to increase the overall rigidity and give a more unique appearance. Incidentally, in this type of roof plate, the waveform shape at both ends of the face plate part (12) is used as the side connecting part (13), and as shown in FIG. ), (tB may be connected by polymerizing the waveform connecting portions (13) with each other.

Moreover, the roof structure of the above embodiment has a roof plate (10) or (
Although this is an example in which a roof board (11) made of only metal plates is applied, a roof board (11) having a backing structure as shown in FIG. 13 may be used instead. To explain this, the face plate part (
12) has a flat inner layer material (23) made of a wood wool board, a foamed resin material, or a plastic board attached to the back side thereof. In this case, the inner layer material (23) is the inclined surface part (16) and bottom surface of the pond roof board (11) connected to the eaves side. 3(1)), etc., and is attached to the head of the face plate (12) excluding approximately the front half thereof. Although not shown, it goes without saying that it is desirable to use the inner layer material (23) attached to the back side of the first roof plate (10) for the top.

In this way, by applying the inner layer material (23) made of wood wool board or foamed resin to the back side of the face plate part (12) to cover the roof, the inner layer material (23) can prevent rain. Noises such as sounds are effectively blocked immediately behind the roof panels (10), (11), thus improving indoor quietness. *In addition, since the wIT thermal function is generated by pasting this inner layer material (23), not only can the air conditioning function work efficiently, but the inner layer material (23) itself can be maintained in good condition, and metal roofs It is also possible to reliably prevent dew condensation on the back surfaces of the plates (10) and (11).

Next, an embodiment will be described in which a roof plate (11) as shown in Fig. fjS13 is used to provide an air layer between the roof surface and the roof foundation structure.

In this embodiment, as shown in FIG.
) or (11) is provided so as to be in contact with the back surface of C inner layer material (
23) and the flat base material (25) laid over the main building material (24) on the building side (26).
We will set up the following.

The base material (25) laid on the main building material (24) is made of wood wool board or hard foam resin material similar to the inner layer material (23), and bolts (not shown) are attached to the main building material (24). It is fixed through fixing devices such as nuts and bolts, and forms the foundation surface of the roof.

On the base material (25), an inner layer material (23) and roof panels (10), (11) are placed at intervals corresponding to the air layer (26).
), long metal rafters (27) are arranged on the upper surface of the base material (25) in a direction perpendicular to the main building material (24), that is, in the direction of the eaves. This metal rafter (27
), a large number of roof plates (11) are installed at equal pitches corresponding to the width, and the above-mentioned hanger member (40) is fixed to the web portion (27A) at the upper end. As shown in the figure, the cross-sectional shape of the metal rafter (27) is such that a wing part (27C) is provided between the flange part (27B) that seats on the base material (25) and the web part (27A) at the lower end of the roof. It is formed into a stepped hat shape, and a roof plate (
io).

This is held in such a manner that the inner layer material (23) attached to the (11) side is fitted into the inner layer material (23). As a result, Moeki eyebrow part (2) C)
A gap or air layer (26) corresponding to the height is formed between the base material (25) and the inner layer material (23). In addition,
The metal rafter (27) is fixed onto the base material (25) by tightening the flange portion (27B) via a fixing member A (28) such as a bolt or screw.

In addition, as shown in Fig. 15, a simple hat-shaped cross section is used as the metal rafter (27), and an inner layer material (
23)? 17 and 6 as if roofing in the manner of j
good.

In this way, the base material (2) that constitutes the base 1 structure of the roof is
There is an air layer (26) between the roof panels (10) and (11)
), the noise from outside such as the sound of rain is absorbed by the air layer (2
6) is attenuated by the inner layer material (23) and base material (25) located above and below, so the intrusion of g-sound into the indoor side is efficiently suppressed, and therefore the indoor quietness is greatly improved. ,
This air layer (26) provides an even better insulation function.

In addition, the roof board (11) of each of the above embodiments is a regular size roof board whose width and length are finished to predetermined dimensions,
In the case of this fixed-length roof sheet, compared to the case where materials such as rolled steel sheets are transported to the construction site and the roof sheets are formed by on-site processing using a roll press machine, etc., only the required amount is transported to the site. In addition to the handling advantage of being easy to transport, there is also the advantage that the construction work is easier because the dimensional accuracy is higher than on-site processing.

[Effects of the Invention] As explained above, according to the roof structure of the present invention,
This is because a plurality of roof sheets are installed so that the eave side end of the other roof sheet located on the line side is aligned with the return slope start position of the slope section, and the back side is supported by the flange surface. A volume space is defined between the sloped surface part and the eave side end of another roof board connected to the line side, and rainwater tends to enter the indoor side through the gap between each roof board due to capillary action. This is reliably prevented by this space.

Therefore, even when a large dome-shaped roof is formed, excellent weather resistance is exhibited without causing rain leaks or dew condensation.

Further, according to the roof structure of the present invention, the roof plates connected in the direction of the eave ridge are supported by the flange surface raised from the ridge side end of the face plate part, and the eave side end of the roof plate is By overlapping the face plate of the roof plate on the eave side at the point where the return slope begins, each roof plate forms the same surface in the direction of the eave ridge, so that /) the upper part has no irregularities or steps, and is orderly. It also has the effect of creating an exterior roof.

Furthermore, in the roof structure of the present invention, where an inner layer material made of wood wool board or foamed resin is attached to the back side of the face plate part of the roof board, noise such as rain noise can be absorbed directly from the back side of the roof board. It effectively blocks out the noise and improves the quietness indoors. In addition, the insulation function created by attaching this inner layer material allows the air conditioning function to work efficiently, maintains the condition of the inner layer itself in good condition, and ensures that dew condensation does not form on the back side of the metal roofing board. This has the effect of preventing

In addition, the roof structure according to the present invention has excellent waterproofness and weather resistance, so there is no need to use long roof plate members in consideration of the seams between the roof plates. It has the advantage of being easy to handle and work on site, and there are no transportation problems. .

On the other hand, according to the roof construction method of the present invention, the eave side end of the roof plate located on the line side (the first roof plate in the top of the roof, the second roof plate in other parts) overlap near the starting part of the return slope of the slope part of the roof plate of No. 2,
The back surface of the face plate part of the roof board located on the ridge side is supported by the flange surface of the roof board located on the eave side, and the face plate part of the roof board located on the ridge side is supported on the sloped surface part of the roof board located on the eave side. Basically, there is no need to perform any special processing or engagement operations on the roof sheets when roofing, and as mentioned above, it is possible to use long roof sheets. Since there is no need to prepare one, it is possible to easily erect a large dome-shaped roof with excellent weather resistance and appearance, even if one is not a skilled construction engineer.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view showing an embodiment of a roof structure according to the present invention, and FIG. 2 is a perspective view of the exterior thereof. The tJSS diagram and the fjS4 diagram are respectively a side sectional view and an external perspective view of the roof shingles used in the roof structure, and the Pt5s diagram is a side sectional view showing details of the connecting part of the roof covered using the roof shingles. Figures 6 and 7 are side sectional views showing main parts of embodiments in which the details of the roof panels differ from each other, and Figures 8 to 8f.
Figure iS12 is also a front sectional view. FIG. 13 is an external perspective view showing still another embodiment of the roof plate;
The figure is an external perspective sectional view of an example of a roof structure covered using this roof board, and Figure f: tS15 is a front sectional view of the main part of the roof structure to show another example of the metal rafter. . FIGS. 16 to 18 are side sectional views each showing a schematic structure of a conventional example. (10...first roof plate, (11(12...face plate part, (13(14...eave side end part,
(15 (16... inclined surface part, (17 (18
...Supporting end surface, (↑9(20,,,fa space part, (21(22...water honey material,
(23 (24... main building material, (25 (26)
...air layer, (27...second roof plate, ...side connection part, ...ridge side end, ...bottom part, ...flange surface, ...eave side 7. Lunge surface, ...inner layer material, ...base material, ...metal rafter.

Claims (4)

[Claims] (1) Both side edges of the face plate forming the roof surface are provided with lateral connecting parts with other adjacent roof plates, and have an external shape corresponding to the shape of the roof top, and have eave side edges at both ends. A first roof plate forming a section, a sloping surface section having lateral connecting sections on both side edges of the face plate section and a return slope toward the ridge side from the middle of the face plate section; A second roof plate is provided between the side connecting portions on both sides, and a support end surface that rises from a side end and has a flange surface located at approximately the same height as the roof surface at its upper end. , a roof structure in which a plurality of second roof plates are connected to both ends of the first roof plate in the direction of the eave ridge, and each roof plate connected in the direction of the eave ridge is located on the ridge side. The eave-side end of the roof shingle located on the eave side is overlapped with the vicinity of the start of the return slope of the sloped surface part of the other roof shingle located on the eave side, and the back surface of the face plate of the ridge-side roof shingle is placed on the flange surface of the eave-side roof shingle. What is claimed is: 1. A roof structure characterized in that a volume space is defined between an inclined surface portion and a supporting end surface of an eave side roof plate and a face plate portion of a ridge side roof plate covering the eave side roof plate from above. (2) A base material is laid on the foundation of the roof, and the roof shingles are supported with a gap between the base material and the inner layer material to create an air layer between the inner layer material and the base material. The roof structure according to claim 1, characterized in that the roof structure is formed. (3) Both side edges of the face plate forming the roof surface are provided with lateral connecting parts with other adjacent roof plates, and have an external shape corresponding to the shape of the roof top, and have eave side edges at both ends. A first roof plate forming a section, a sloping surface section having lateral connecting sections on both side edges of the face plate section and a return slope toward the ridge side from the middle of the face plate section; A second roof plate is provided, which has a supporting end surface rising from a side end and having a flange surface located at approximately the same height as the roof surface at its upper end, and formed between the side connecting portions on both sides. First
The eave side end of the second roof plate located on the roof side or the ridge side is overlapped with the vicinity of the start of the return slope of the sloped surface part of the second roof plate located on the eave side, and the second roof plate is located on the ridge side. The back surface of the face plate part of the roof plate is supported by the flange surface of the roof plate located on the eaves side, and the face plate part of the roof plate located on the ridge side is overlapped with the sloped surface part of the roof plate located on the eave side. A roof construction method characterized in that a plurality of roof sheets are laid in the direction of the eaves. (4) When roofing the first and second roof shingles, an inner layer material was pasted on the back side of each roof shingle in advance in an area that would not interfere with other roof shingles when the roof was installed. The roof construction method according to claim 3, characterized in that: