JP5166729B2 - Roofing material and roof - Google Patents

Description

  The present invention relates to a roof material mainly composed of an inorganic material such as cement and a roof using the same.

  FIG. 12 shows a roof on which a substantially flat and three-dimensional roof material A is constructed. Such a roofing material A usually has an upper rear end (above the ridge side end) of the lower roofing material A with the front hanging portion disposed on the eaves side, as shown in FIGS. 13 (a) to (c). Overlaid on and constructed. In addition, as shown to Fig.13 (a)-(c), the overlap margin L of the roofing materials A and A adjacent to an eaves-ridge direction can be suitably set between 40-100 mm.

As described above, the roof material A is placed on the front drooping portion superimposed on the lower roof material A and on the roof base such as a field (usually roofing is laid on the surface of the roof base). The ridge side end (rear end) is supported, and the distance between supports is long. Therefore, there is a problem that when a person gets on the roofing material A at the time of construction, refurbishment, installation of an antenna or the like, the moment of load becomes large and is easily broken. In order to solve such a problem, for example, Patent Document 1 proposes to provide a thick plate on the back surface of the roof material, but there is a problem that the weight increases, and the roof material is large. However, the above problem cannot be solved.
JP 2004-35246 A

  This invention is made | formed in view of said point, and it aims at providing the roof material which can make it difficult to break even if a load is applied from the surface side, and a roof using the same.

The roof material A according to claim 1 of the present invention forms the ridge side end portion of the substrate 1 as the ridge side overlap portion 2 and forms the eave side end portion of the substrate 1 as the eave side overlap portion 3. In the roof material A placed on the roof base 4 while being connected in the direction of the eaves ridge so as to overlap the eaves side overlapped portion 3 formed on the other substrate 1 on the ridge side overlapped portion 2, A tread crack prevention leg 5 is provided on the back surface of the ridge-side overlap portion 2 at a position closer to the eave side than the ridge-side end surface, and a front hanging portion 7 is formed at the eave-side end portion of the substrate 1. A support leg 8 is formed on the back surface of the eaves-side overlap portion 3, and a rising portion 9 is provided on the surface of the ridge-side overlap portion 2 of the substrate 1 so that the support leg 8 can be grounded when the substrate 1 is bent. The leg 8 is formed at a height at which a gap 6 is formed between the ridge-side overlap portion 2 and the ridge-side overlap portion 2 in a state where the ridge-side overlap portion 2 and the eaves-side overlap portion 3 are overlapped, and the substrate 1 is bent. It is characterized in that it is possible grounding to the raised portion 9 by.

State roofing material A according to claim 2, Oite to claim 1, to form an auxiliary leg 10 at a substantially central portion of the eaves ridge direction of the back surface of the substrate 1, the auxiliary leg 10 is placed in Hiraba present invention It is characterized by being formed at a height that makes contact with a flat field.

Roof according to claim 3 of the present invention is to No設plurality of roofing material A according, A ... on top of roof bed 4 in claim 1 or 2, on the ridge-side overlapped portion 2 of the roofing material A Further, the eaves-side overlapping portion 3 formed on the other roof material A is connected in the eaves-ridge direction so as to overlap.

  In the invention of claim 1, by placing the step crack preventing leg 5 on the roof base 4, the substrate 1 can be supported between the step crack preventing leg 5 and the ridge-side overlapping portion 2. Compared to the case where the substrate 1 is supported at the most ridge-side position and the most eave-side position, the distance between the supports of the substrate 1 can be shortened, and even if a load is applied from the surface side, it can be made difficult to break. Is.

Further , by providing the support leg 8 on the ridge side with respect to the front hanging part 7, the support leg 8 can be grounded to the ridge side overlapping part 2 before the substrate 1 is bent and cracked when a load is applied from the front side. Even if a load is applied from the surface side, it can be made difficult to break.

In addition , it is possible to prevent rainwater from entering from the overlapped portion of the ridge-side overlap portion 2 and the eaves-side overlap portion 3 by the start-up portion 9 and to improve waterproofness.

In the invention of claim 2 , the substantially central portion of the substrate 1 can be supported by the auxiliary legs 10 in a state where it is placed on a flat surface, and even if a load is applied from the surface side before construction, it can be made difficult to break. It is.

In the invention of claim 3 , the plurality of roofing materials A, A... According to claim 1 or 2 are placed on the roof base 4 and another roof is placed on the ridge side overlapping portion 2 of the roofing material A. The eaves-side overlapping portion 3 formed on the material A is connected in the eaves-ridge direction so as to overlap.

  Hereinafter, the best mode for carrying out the present invention will be described.

  In the present invention, the roof material A can be formed of an appropriate material. For example, the roof material A can be formed by molding and curing and curing a cement-based molding material. At this time, it is preferable to use a cement-based inverse emulsion composition composed mainly of cement, water, and an oil component such as a styrene monomer as a cement-based molding material. Such a cement-based molding material has high shape retention, and can be suitably used for the production of the roof material A having a three-dimensional shape. This cement-based molding material is prepared by first mixing an emulsifier, a styrene monomer, water, a crosslinking agent, and a polymerization initiator to prepare an inverse emulsion (W / O emulsion). Next, the cement, a lightening agent, It can be obtained by adding reinforcing fibers and mixing with a forced stirrer or a continuous mixer. The cement is not particularly limited, but Portland cement, fly ash cement, blast furnace cement, alumina cement, high alumina cement, slag cement, early strong cement, etc. can be used, or a single type can be used, Two or more types can be used in combination. In addition, as the weight reducing material, for example, fly ash balloon, pearlite, shirasu balloon, etc., organic foam such as acrylonitrile foam, expanded polystyrene, polyvinylidene chloride foam, etc. can be used. For example, polypropylene fiber, acrylic fiber, vinylon fiber, or the like can be used. Examples of the emulsifier include nonionic surfactants such as oleic acid type emulsifier, coconut oil type emulsifier, sorbitan sesquioleate, glycerol monostearate, sorbitan monooleate, diethylene glycol monostearate, sorbitan monostearate, diglycerol monooleate Agents, various anionic surfactants, cationic surfactants and the like can be used. As the crosslinking agent, for example, trimethylolpropane trimethacrylate or the like can be used. As the polymerization initiator, a polymerization initiator such as an organic peroxide or persulfate, for example, t-hexylperoxy-2-ethylhexanoate can be used. The content of emulsifier is 2.0 to 5.0% by weight, the content of styrene monomer is 8.0 to 17.0% by weight, and the content of water is 77.0 to 89.0, based on the total amount of the inverse emulsion. % By weight, the content of the crosslinking agent can be set to 0.04 to 0.6% by weight, and the content of the polymerization initiator can be set to 0.04 to 0.6% by weight. Further, the cement content is 70 to 99% by weight, the light weight material content is 0.3 to 30% by weight, and the reinforcing fiber content is 1.0 to 2.0% with respect to the total amount of the cement-based molding material. It can be set to% by weight. Next, the above-mentioned cement-containing inverse emulsion composition is used as a cement-based molding material and molded by an appropriate method such as a casting method, an extrusion molding method, an injection molding method, or a press molding method. The roof material A can be obtained by steam curing for ˜15 hours.

  As shown in FIG. 2, the roof material A of the present invention is formed by providing a plurality of inclined surfaces 22, 22... With different inclination directions on the surface of a rectangular plate-like substrate 1. Further, a side overlap receiving portion 15 protrudes from one side end portion of the substrate 1 and the other side end portion of the substrate 1 is formed as a side overlap portion 16. Further, the ridge side end portion of the substrate 1 is formed as a ridge side overlap portion 2 and the eave side end portion of the substrate 1 is formed as an eave side overlap portion 3. As shown in FIGS. 3, 4, 5, and 7, the front drooping portion 7 protrudes downward (on the back side of the substrate 1) at the eave side end portion of the substrate 1 and is formed over the entire length in the width direction of the substrate 1. Yes. On the eaves side overlapping portion 3 of the substrate 1 on the ridge side of the front hanging portion 7, support legs 8 that protrude downward are provided. A plurality of support legs 8 are provided side by side in the width direction of the substrate 1. As shown in FIGS. 5 and 8, on the ridge side of the support leg 8, an auxiliary leg 10 that protrudes downward is provided at a substantially central portion of the back surface of the substrate 1. A plurality of auxiliary legs 10 are arranged in the width direction of the substrate 1. The auxiliary leg 10 is also provided on the back surface of the side overlap receiving portion 15. On the back side of the ridge side overlap portion 2 on the ridge side of the auxiliary leg 10 on the eave side with respect to the ridge side end surface of the substrate 1, a tread crack prevention leg 5 is provided to protrude downward. A plurality of step crack preventing legs 5 are provided side by side in the width direction of the substrate 1. Further, the lower end of the tread crack preventing leg 5 is positioned below the back surface of the ridge side end of the substrate 1. On the ridge side of the tread crack prevention leg 5, a rising portion 9 is provided on the surface of the ridge side overlapping portion 2 of the substrate 1 so as to protrude upward. The rising portion 9 is formed over the entire length of the substrate 1 in the width direction.

  Then, the roof material A formed as described above is placed on a roof base such as a base plate (usually roofing is laid on the surface of the roof base) 4 and stacked on the ridge side. The part 2 and the side receiving and overlapping part 15 are constructed so as to be fixed with nails or the like. Then, as shown in FIG. 10, a roof is formed by arranging a plurality of roof materials A, A... On the roof base 4 side by side in the vertical direction and the horizontal direction in the eave building direction (the inclination direction of the roof) and the direction orthogonal thereto. can do. Here, the roof materials A and A adjacent to each other in the direction orthogonal to the eaves-ridge direction overlap the side overlap portion 16 of the other roof material A on the side overlap receiving portion 15 of the one roof material A. Connected. Moreover, as shown in FIG. 1, in the roof materials A and A adjacent to the eaves direction, the roof material A arranged on the ridge side on the ridge side overlapping portion 2 of the roof material A arranged on the eaves side. The eaves-side overlap portion 3 of the roof material A arranged on the ridge side is connected to the eave-side overlap portion 3 of the eaves-side overlap portion 3 at this time. It arrange | positions so that it may straddle both the ridge side overlapping parts 2 and 2 of A. And the positioning mark 19 provided in the surface of the substantially central part of the eaves side edge part of the roof material A arrange | positioned at the ridge side, and the connection part B of the roof materials A and A adjacent to the direction orthogonal to the eaves ridge direction, Are arranged in a straight line in the direction of the eaves. In this way, the roof is formed such that a plurality of roof materials A, A.

  When the eaves-side overlap portion 3 is stacked on the ridge-side overlap portion 2 as described above, the front hanging portion 7 is placed on the ridge-side overlap portion 2 on the eaves side rather than the rising portion 9. In addition, the tread crack prevention leg 5 is placed on the roof base 4, and the support leg 8 is positioned above the rising portion 9. And as shown in FIG. 9, the clearance gap 6 is formed between the support leg 8 and the raising part 9 in this normal construction state. When a load is applied to the surface of the substrate 1, the substrate 1 can be supported by the front drooping portion 7 and the tread crack prevention leg 5, and even if a load is applied from the surface side, it can be made difficult to break. Further, even when a larger load is applied, the support leg 8 contacts the surface (upper surface) of the raised portion 9 before the substrate 1 is bent and cracked to the back surface side, so that the distance between the supports of the substrate 1 is further shortened. Therefore, it can be made more difficult to break. The height dimension of the support leg 8 (projection length from the surface of the substrate 1) can be set according to the amount of bending of the substrate 1 and the height dimension of the rising portion 9.

  In addition, by setting so that the support leg 8 is grounded only when a load is applied from the surface side, even if unevenness or the like occurs in the roof base 4, the front hanging portion 7 and the surface of the ridge side overlapping portion 2 It is difficult to see through between the two, and it is possible to prevent deterioration of waterproofness.

  Moreover, in this invention, when the load is applied to the surface in the state where the roofing material A before construction is placed on a flat surface at a construction site or the like, the auxiliary formed on the back surface of the substrate 1 at the substantially central portion in the eaves ridge direction. Since the leg 10 is in contact with the flat field, it can be prevented from cracking. For this purpose, the height of the auxiliary leg 10 (projection length from the back surface of the substrate 1) is such that the lower end of the auxiliary leg 10, the lower end of the tread crack preventing leg 5, and the lower end of the front drooping portion 7 are substantially the same. It can be set to be a position.

  FIG. 11A shows a mounting structure of the roof material A using the repair clip 30. As shown in FIGS. 11 (b) and 11 (c), the repair clip 30 includes a base plate portion 31 that is fixed to the roof base 4 by nailing or the like, and a locking portion 33 that locks to the ridge side end of the roof material A, 34. The repair clip 30 is used to attach a new roof material A to the roof base 4 when a part of the roof material A is replaced with a new roof material A to repair the roof.

It is a partial sectional view showing an example of the roof of the present invention. It is a top view which shows an example of the roofing material of this invention. It is a bottom view same as the above. (A) is a right side view of the above, and (b) is a left side view of the same. (A) is AA sectional drawing in FIG. 2 same as the above, (b) is BB sectional drawing in FIG. 2 same as the above. (A) is a front view of the same, (b) is a rear view of the same, and (c) is a cross-sectional view taken along the line CC in FIG. It is sectional drawing which shows a part same as the above. It is sectional drawing which shows a part same as the above. It is sectional drawing which shows a part of construction state same as the above. It is a top view which shows a part of construction state same as the above. Other embodiment same as the above is shown, (a) is a cross-sectional view, (b) (c) is a perspective view showing an auxiliary clip. It is a partial perspective view which shows a prior art example. It is a partial schematic diagram showing a conventional example.

Explanation of symbols

A Roof material 1 Substrate 2 Building side overlap part 3 Eaves side overlap part 4 Roof base 5 Tread crack prevention leg 6 Gap 7 Front drooping part 8 Support leg 9 Raising part 10 Auxiliary leg

Claims (3)

The ridge side end portion of the substrate is formed as a ridge side overlap portion, the eave side end portion of the substrate is formed as an eave side overlap portion, and the eave side overlap portion formed on another substrate is formed on the ridge side overlap portion of the substrate. In the roof material that is placed on the roof base while being connected in the direction of the eaves in a stacked manner, a tread crack prevention leg is provided on the back side of the ridge side overlap part at a position closer to the eaves side than the ridge side end surface of the substrate, The front hanging part is formed at the eaves side end of the board, the supporting leg is formed on the back surface of the eaves overlapping part at a position on the ridge side from the front hanging part , and the board bends on the surface of the building side overlapping part of the board. The support leg can be grounded so that the support leg is formed at such a height that a gap is formed between the ridge-side overlap part and the ridge-side overlap part. roofing material, which is a possible grounding to the raised portion by the substrate is bent together. An auxiliary leg is formed in the substantially central portion of the eaves ridge direction of the back surface of the substrate, the auxiliary leg according to claim 1, characterized by comprising forming a height that contacts the Hiraba while placed Hiraba Roofing material. A plurality of roofing materials according to claim 1 or 2 are placed on a roof base, and an eaves-side overlapping portion formed on another roofing material is overlaid on a ridge-side overlapping portion of the roofing material. A roof characterized by being connected in the building direction.

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