JPS597457Y2 - sheet roofing material - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a plate roofing material having longitudinal grain grooves.

In sheet roofing materials made of asbestos cement, etc., the surface of the roofing material has vertical grain grooves 1', 1', etc. as shown in Figure 1.
・A pattern may be attached.

In FIG. 1, a portion A' above dotted diagonal lines a' and a' indicates a portion that is overlapped with the upper row roofing material.

Among these overlapping parts, wood grain grooves 1', 1'...
Since the flat portions 2', 2', . . . other than . . . are in close contact with the back surface of the upper row roofing material, there is a risk that rainwater may enter through this contact interface due to capillary action.

Furthermore, during strong wind and rain, rainwater tends to blow into the overlapping portion A' from the vertical grain grooves 1', 1', . . . .

As mentioned above, even if rain ice intrudes into the overlapping part of roofing materials, the overlapping allowance (working distance) is usually set sufficiently large, so rainwater will not intrude into the roofing boards, but the overlapping allowance There is a problem when making the roof smaller and installing a roof.

The plate-shaped roofing material according to the present invention has been devised in view of the above-mentioned points, and the plate-shaped roofing material has two rows of sawtooth patterns, upper and lower, on the top of the roofing material on which the upper row of roofing materials is overlapped. Horizontal grooves are provided, and a large number of vertical grain grooves are provided on the surface of the roofing material, excluding the sawtooth zone between the sawtooth horizontal grooves, and the valleys of both the sawtooth horizontal grooves are communicated with each other by the vertical groove, and the lower row This structure is characterized in that the upper end of the vertical grain groove facing the valley is connected to the valley of the sawtooth horizontal groove.

The present invention will be explained below with reference to the drawings.

In FIG. 2, S is the main body of the plate roofing material, which is manufactured from asbestos cement.

Although the illustrated roofing body is pentagonal, the shape may be any other suitable shape.

A shows the upper part of the roofing material which is superimposed on the upper row of roofing materials.

la and lb are two rows of sawtooth horizontal grooves provided in the upper part A of the roof material.

2, 2, . . . are a large number of vertical grain grooves provided on the surface of the roofing material, and are cut off by a sawtooth zone 3 between the sawtooth horizontal grooves 1a and lb.

The serrated zone 3 is a flat surface which is brought into close contact with the back side of the upper row roofing material.

Also, the vertical grain grooves 2, 2... are all serrated horizontal grooves 1.
a, lb, and the valley portion 1c of the lower row serrated lateral groove 1a.
, lc... Vertical grain groove facing 20.20...
The upper ends of ... are connected to the same valley portions 1c, lc...

4, 4... are vertical grooves that communicate the valleys of the upper and lower rows of serrated lateral grooves 1a, lb, and in the illustrated embodiment,
The vertical grooves 4, 4, . . . are commonly provided in the wood grain grooves.

Communication between the wood grain grooves 21, 21, .

In the above roofing material, the one-dot diagonal line a - at the lower end of the overlap
From point a, the flat surface 5 between the wood grain grooves 2, 2...
5... In other words, rainwater that enters by capillary action from the part that is almost in close contact with the back surface of the upper row roofing material enters the sawtooth horizontal groove 1a of the lower row, and while flowing down the sawtooth inclined groove of this groove 1a. From the inclined groove to the vertical grain groove 2, 2...
The water is refilled through the pipe.

In this case, the valley portions 1c, lc of the lower row sawtooth lateral grooves 1a...
... has wood grain grooves 20. 20... are in communication with each other, the above-mentioned rainwater that has entered the lower row of sawtooth horizontal grooves 1a is completely returned without accumulating in the same grooves 1a.

Also, from the lower end of the overlap line a-a, there is a wood grain groove 2,
In order to prevent rainwater from blowing in through the roof during strong winds and rain, there is a sawtooth zone 3 with a flat surface between the upper and lower rows of sawtooth horizontal grooves 1a and 1b, and this zone 3 is connected to the upper row of roofs. Since it is brought into almost close contact with the back surface of the material, the rainwater blown into the material is well blocked by this close contact region 3.

Even if rainwater intrudes beyond this tight zone 3, this rainwater will be collected by the upper row of serrated horizontal grooves 1b, and this collected water will flow through the vertical grooves 4, 4... Despite being told back, everything is fine.

As mentioned above, although the sheet roofing material according to the present invention has a vertical grain groove pattern on its surface, rainwater that tries to enter the overlapping part through the vertical wood grain pattern is Rainwater is captured by the lower row of serrated lateral grooves, and is effectively stopped from flowing upward by the close band extending above the lower row of serrated lateral grooves. The water is completely captured by the upper row of sawtooth transverse grooves, and the amount of water that enters into the upper row of sawtooth transverse grooves is sufficiently reduced by the existence of the tight zone, so that the capture rate is almost complete, so that the polymerization It is possible to reliably prevent rainwater from entering the area, and to provide a roof that is completely waterproof against rain leaks.

[Brief explanation of the drawing]

FIG. 1 is a top view showing a conventional plate roofing material having a grain groove pattern, and FIG. 2 is a top view showing a plate roofing material according to the present invention. In the figure, la and lb are sawtooth horizontal grooves, 2, 2...
...,20. 20... and 21.21...
... is a vertical grain groove, 3 is a sawtooth zone, lc, lc...
. . . are the valleys of the serrated horizontal grooves, and 4, 4 . . . are the vertical grooves.

Claims (1)

[Scope of utility model registration request] In a plate-shaped roofing material, two rows of upper and lower sawtooth horizontal grooves are provided on the upper part of the roofing material on which the upper row of roofing board materials are overlapped, and the surface of the same roofing material is provided with a sawtooth band between the two sawtoothed horizontal grooves. A large number of vertical grain grooves are provided, the valleys of both of the serrated horizontal grooves are communicated by a vertical groove, and the valleys of the lower row of sawtooth horizontal grooves are communicated with the upper ends of the vertical wood grain grooves facing the valleys. A sheet roofing material featuring: