JPH0544411Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the improvement of natural slate roofing materials.

[Prior Art] A conventional method for producing natural slate roofing materials involves cutting raw natural slate into a predetermined width and length with a thickness that is approximately 3 to 5 times the thickness of a predetermined board used as roofing material. Then, by splitting it into pieces of a predetermined thickness, it was made into plate-shaped pieces that could be used as roofing materials.

Then, the necessary number of nail holes were drilled to fix it to the roof, and the material was used as a roofing material.

[Problems that the invention aims to solve] As mentioned above, conventional natural slate roofing materials were made into a flat plate by splitting the rough stone, so since it was split along the so-called stone grain, there was a problem with the surface. Warping, warping, and uneven board thickness were likely to occur. For this reason, when installing this natural slate roofing material on a roof, it is necessary to select the condition of the boards and make good use of them, and this requires the skills of a skilled roofer. I had no choice but to rely on Another drawback was that even if a skilled craftsman was involved, the construction process was very time-consuming because the roofing was done while selecting the roof as described above. Furthermore, since it is a natural stone, many of the boards contain latent cracks, which can cause the boards to crack when they are hit with a hammer or other object when fixed with nails, which increases the labor involved in construction. I was used to it.

Furthermore, even if the boards are selected, due to the poor precision of the boards themselves, gaps 10 are likely to occur between the natural slate roofing materials 9 even when the roof is completely roofed, as shown in Figures 4 and 5, resulting in poor waterproof performance. It was hot.

In addition, natural slate roofing materials can be made by nailing.
Each sheet had to be fixed at multiple locations, which also reduced workability.

[Means for solving the problem] The present invention was made to solve the above-mentioned problem, and in a natural slate roofing material used as a roofing material, it is possible to To provide a natural slate roofing material characterized in that the back surface is ground to improve the flatness of the back surface, but the front surface is not ground.

Hereinafter, the present invention will be explained according to its embodiments.
FIG. 1 is a partial perspective view of a roof constructed using the natural slate roofing material of the present invention as a roof base material, and FIG. 2 is a sectional view of a similar roof portion. In the figure 1
1 is a natural slate roofing material whose back surface has been ground, 2 is a through hole for a fixing nail, 3 is a roof base material, 4 is a fixing nail, 5 is a fixing hook, 6 is a groove, and 7 is a natural slate roofing material 1 8 shows the back side, and 8 shows the front side. In the natural slate roofing material 1 of the present invention, the back surface 7, which is the roof base side, is ground to improve the flatness of the back surface, and the surface 8 is similar to the split surface that occurs when the raw natural slate stone is split. We do not grind it so that the unique appearance of natural slate roofing materials, such as warps, twists, and unevenness, can be brought out as a design on the roof surface.
Leave it in a split state. The thickness of this natural slate roofing material is about 4 mm to 25 mm, and the size is about 100 mm x 100 mm to 300 x 500 mm, and the shape is basically a rectangle with the corners cut off and the bottom side rounded. It is most practical to cut the material into shapes and sizes, but of course the shape and dimensions are not limited to these.

In one preferred embodiment of the present invention, the third
As shown in the figure, when the natural slate roofing material 1 is covered with the roofing material 3 using the fixing hook 5, at least the lower side of the natural slate roofing material 1 is covered with the roofing material 3. A notched groove 6 is provided at the center of the natural slate roofing material, or near the center that is approximately near the center, that is, at the lower side of the natural slate roofing material, or near the center of the lower and upper sides. The example shown in the figure is the latter example. The width of this groove is appropriately designed according to the size and shape of the fixing hook 5 so that the fixing hook 5 just fits therein.

In addition to the construction method using fixing hooks as described above, fixing nails 2 as shown in Figures 1 and 2 can also be used.
A construction method using can also be adopted in the same way.

[Function] By using the back-ground natural slate roofing material of the present invention, it is possible to omit the conventional method of selective roofing on the roof due to the warping of the natural slate roofing material itself and variations in board thickness. It is possible,
Therefore, since roofing can be done without having to choose the roofing material to be used, the construction work is saved, and since the accuracy of the roofing material is improved, there are no gaps that are harmful to waterproofing, and the waterproofness is improved.

In addition, if you use fixing hooks to fix natural slate roofing materials that have grooves on the bottom, top, and bottom sides, you can improve workability and the fixing hooks can be firmly fixed in the grooves, making it easier to use nails. It provides a more reliable finish than a stopper.

[Effects of the invention] By using the natural slate roofing material of the present invention, it is possible to improve the precision of the lower surface of the roofing material, thereby preventing defects during construction and further improving the construction method. In addition, when grinding the back side, impact is applied to the plate material, so if the plate has latent cracks, it will crack at that point, so there is a risk that previously defective products will be brought to the site and cracks will occur on site. This also improves workability.

In addition, if you use natural slate roofing materials with grooves on the bottom, top, and bottom sides and fix them with fixing hooks, you only need one hook per roof, which will make construction easier. At the same time, the hook firmly fits into the groove and the plate is securely fixed.

Furthermore, the waterproofness is also significantly improved, as there are no gaps caused by cracks in the boards.

In addition, in this invention, only the back surface is ground, so the surface remains as it is, so it does not lose the stately appearance of natural slate when the roof is finished, and the above-mentioned effects can be achieved. can be realized.

[Brief explanation of the drawing]

Figure 1 is a partial perspective view of a roof showing an example of construction of natural slate roofing material according to the present invention, Figure 2 is a partial cross-sectional view of the roof similar to Figure 1, and Figure 3 is a natural slate roof according to the present invention. Fig. 4 is a partial perspective view of a roof constructed using conventional natural slate roofing materials, and Fig. 5 is a partial cross-section of a roof similar to Fig. 4. The figure shows. In the figure, 1 is a back-ground natural slate roofing material, 2 is a through hole for a fixing nail, 3 is a roof base material, 4 is a fixing nail, 5 is a fixing hook, 6 is a groove, and 7 is a natural slate The back side of the roofing material, 8 is its front surface, 9 is a conventional natural slate roofing material, and 10 is a gap.

Claims (1)

[Claims for Utility Model Registration] 1. A natural slate roofing material used as a roofing material, characterized in that the back surface of the natural slate roofing material is ground to increase the flatness of the back surface, but the surface is not ground. roofing material. 2 Claim No. 1 for registration of a utility model characterized in that a groove is provided near the center of at least the lower side of the natural slate roofing material when the natural slate roofing material is covered with a roof base material.
Natural slate roofing material as described in section.