JP4703902B2 - Architectural base sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building foundation sheet used as a roof underlaying material or a wall surface foundation material.
[0002]
[Prior art and problems to be solved by the invention]
A typical example of this type of building foundation sheet is roofing used for tiled roofs. FIG. 4 shows a conventional general tiled roof. In this type of tiled roof, a roof roofing material (roofing) X is laid on a roof base plate 5 and a tile positioning tile is placed thereon. .. Are installed by nailing and the roof tiles 6, 6... Are nailed to the roof tiles 7, 7.
[0003]
The roofing X used for tiled roofs is made of paper or non-woven fabric with asphalt attached (impregnated or coated), or two sheets of paper or non-woven fabric coated on each side of the asphalt layer. Has been. The roofing X has a waterproof function due to the asphalt component. For example, when the rainwater is blown from the gap between the roof tiles 7 and 7 or the roof tile 7 is broken, the water W that has entered the lower surface side of the roof tile 7 can be obtained. Is prevented from leaking to the base plate 5 side.
[0004]
By the way, as the conventional general roofing X, as shown in FIG.
[0005]
On the other hand, in the tiled roof, the tile rail 6 is mounted on the roofing X by nailing, and the tile rail 6 is mounted in the roof width direction at a predetermined interval in the inclination direction of the roof.
[0006]
However, as in the conventional example of FIG. 4, in the case where the flat sheet-like roofing X having no irregularities is used on the roof base plate 5, the entire lower surface of the roof tile 6 is in a state with almost no gap on the upper surface of the roofing. Since they are in contact with each other, when rainwater W enters the lower surface side of the roof tile 7, the intrusion rainwater W is blocked by the roof rail 6 portion on the roofing X and stays there for a long time. As described above, when the rainwater W stays on the roof rail 6 on the roofing X for a long time, the following problem occurs.
(1) Since the roof tiles 6 remain wet for a long time with the intruding rainwater W, the tile rails 6 decay quickly.
(2) Invasion rainwater W gradually infiltrates between the bottom surface of the roof tile 6 and the top surface of the roofing X, and enters the field plate 5 from the nail hole formed in the roofing X, causing rain leakage and The base plate 5 gets wet and decays.
(3) The intrusion rain water W easily comes into contact with the nail for fixing the tile rail 6 for a long time, and the nail is rusted (the decay of the nail proceeds), thereby impairing the strength or durability of the roof.
[0007]
On the other hand, this type of roofing X is designed to prevent moisture from penetrating rainwater W that has entered the lower surface of the roof tile 7 into the base plate 5 side. By the way, the attic of a tiled roof has a small ventilation opening, but it has poor air permeability, and even if it becomes rainy (the attic also becomes high humidity) to clear weather (the outside air becomes low humidity), the humidity of the attic is from the roof surface. Is not released and remains in a high humidity state for a long time. And, if the attic is in a high humidity state, moisture may condense on the attic when the temperature drops at night. Sometimes, the condensed water may cause stains on the ceiling board, or the field board 5 may Absorbs condensed water and becomes highly moist. In addition, when the field plate 5 remains in a high water content state for a long time, there are problems that mold is generated there and the field plate 5 is easily rotted.
[0008]
In addition to roofing for tiled roofs, this type of architectural foundation sheet is also used as a foundation material for building walls. As described above, the problem of condensation on the back side of the wall base material occurs.
[0009]
The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a building foundation sheet that can ensure air permeability while ensuring a waterproof function.
[0010]
[Means for Solving the Problems]
The present invention has the following configuration as means for solving the above problems. The present invention is directed to a building foundation sheet that can be used as a roofing material (roofing) or as a wall foundation material.
[0011]
And the building foundation sheet of the present application forms a large number of small convex portions extruded on one side with small intervals in the front, rear, left and right on the waterproof sheet base material, and around the center of each small convex portion. It is characterized by the formation of minute diameter vent holes.
[0012]
As the sheet base material, one obtained by attaching (impregnating or applying) asphalt to paper, nonwoven fabric, or the like, or two sheets of paper, nonwoven fabric, or the like covering the front and back surfaces of the asphalt layer can be used.
[0013]
Each small convex portion of the sheet base material has a diameter of about 5 to 10 mm and a height of about 3 to 5 mm, for example, and the interval (center interval) between the small convex portions is about 10 to 20 mm in the front, rear, left and right respectively. It is formed as follows. These numerical values are not particularly limited, and can be appropriately changed in design. Each small convex portion can be designed in an appropriate shape such as a circle or a quadrangle in a plan view, and can be designed in an appropriate shape such as a trapezoid or a hemisphere in a side view. In addition, each small convex part of a sheet | seat base material can be easily extrusion-molded with a press molding machine.
[0014]
The portions other than the small convex portions in the sheet base material are continuous in a flat state, and the continuous flat portion becomes a flowing-in passage of intrusion rainwater.
[0015]
The air holes of each small convex portion prevent air from passing through , but have a diameter of 0.5 to 1 mm . This air hole is preferably perforated simultaneously with the extrusion of the small convex portion. Water droplets have a property of agglomerating due to surface tension. If a hole diameter is 1 mm or less , the water droplets do not pass through the air hole.
[0016]
When used as roofing for a tiled roof, the building foundation sheet is laid on a roof base plate with the small convex portion on the upper surface side. Then, roof tiles are attached on the base sheet, and roof tiles are completed (nailed) by hanging tiles on each tile rail.
[0017]
In the tiled roof using the base sheet of the present application, there is a gap corresponding to the height of the small convex part between the bottom surface of the tile pier and the top surface of the continuous flat portion of the sheet base material. Intrusion rainwater flows down the continuous flat surface on the upper surface of the sheet base material.
[0018]
By the way, although each small convex part of the sheet base material has a vent hole, this vent hole is located higher than the continuous flat part of the sheet base material and has a minute diameter of about 0.5 to 1 mm. It is. Therefore, even if rainwater enters the underside of the roof tile and the water droplets are placed on the small convex portions (on the vent holes), the water drops have a surface tension effect, so that the water passes through the minute diameter vent holes. There is nothing.
[0019]
In addition, since each small convex part is formed with a vent, for example, even if the attic is in a high humidity state in rainy weather, the humidity in the attic will cause the field plate to be removed when the weather becomes clear (the outside air becomes low humidity). It passes through the vents and is discharged to the roofing upper surface side (outside air side), and the humidity of the attic is lowered to the outside air humidity in a short time.
[0020]
Thus, the base sheet of the present application has both a waterproof function against intruding rainwater and a humidity releasing function on the lower surface side of the sheet base material.
[0021]
In addition, when using the base sheet for building of this application as a base material for walls, it is installed inside the exterior material of the wall body in a state where the small convex part protruding side of the sheet base material faces the outer surface side of the building. . Also in this case, even if rainwater enters beyond the wall exterior material, the rainwater is blocked by the base sheet, while the base sheet has air permeability through the air holes, so that condensation occurs on the inner surface side of the base sheet. Nothing will happen.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
If the building foundation sheet of this embodiment is demonstrated with reference to FIGS. 1-3, in this embodiment, the roofing Y used for a tiled roof is employ | adopted as a building foundation sheet.
[0023]
The tiled roof shown in FIGS. 1 to 3 has a roofing Y placed on the roof base plate 5, and tile tiles 6, 6.. 6. The roof tiles 7 and 7 are nailed to the roof. Since the roof base plate 5 is made of wood, it has moisture permeability (humidity adjustment function). In addition, there is a slight gap between the field boards 5 and 5 so that air can pass through the gap between the field boards 5 and 5.
[0024]
The roofing Y of the embodiment of the present application forms a large number of small convex portions 2, 2... Extruded on one side with small intervals in the front, rear, left and right directions on the waterproof sheet base 1, while each small convex portion A small-diameter vent hole 3 is formed in the vicinity of the center of 2, 2,.
[0025]
As the sheet substrate 1, a sheet or nonwoven fabric with asphalt attached (impregnated or coated), or a sheet of nonwoven fabric coated with two sheets of paper or nonwoven fabric on the front and back sides of the asphalt layer can be employed. The thickness of the sheet substrate 1 is not particularly limited, but about 0.5 to 1 mm is appropriate.
[0026]
In this embodiment, the small convex portions 2, 2... Of the sheet base material 1 have a diameter of about 5 to 10 mm and a height of about 3 to 5 mm, and have an interval of about 10 to 20 mm on the front, rear, left and right respectively. It is formed to stand up. In addition, between the outer surfaces of each small convex part 2 and 2, the moderate space | interval (for example, about 5 mm width) which can flow water is formed.
[0027]
In this embodiment, the small convex portions 2, 2... Are extruded in a circular shape in a plan view and a trapezoidal shape in a side view, but can be formed into an appropriate shape such as a spherical shape. Each of the small convex portions 2, 2,... Can be easily extruded by a press molding machine. Further, when the asphalt is adhered as the sheet base material 1, the strength becomes relatively high, and the small convex portions 2, 2,... Have a considerable strength against the pressing force from the upper surface side.
[0028]
The portions other than the small convex portions in the sheet substrate 1 are continuous flat portions 4 that are continuous in a flat state. Then, when rainwater enters the lower surface side of the roof tile 7 (arrow W in FIG. 2), the continuous flat portion 4 becomes a flow-in passage for the intruding rainwater as indicated by an arrow W in FIG.
[0029]
Each small protrusions 2,2 ... vent 3,3 ... forming the air intended to prevent the passage of water which pass, in diameter are formed in the 0.5 to 1 mm. The vent holes 3, 3... May be perforated simultaneously with the molding of the small convex portion 2.
[0030]
When used as roofing for a tiled roof, the building foundation sheet Y of this embodiment is installed on the roof base plate 5 so that the small convex portions 2, 2. Then, the tile frame 6 is mounted on the base sheet (roofing) Y so as to face the roof width direction. The width of the tile frame 6 (width in the roof inclination direction) is about 30 to 40 mm. It is placed across a plurality of (2 to 3) small convex portions 2 and 2 in the roof inclination direction. Therefore, the lower surface of the roof tile 6 is supported by a large number of small convex portions 2, 2... (For example, 100 to 300 per 1 m of the roof tile). 2 ·· does not undergo compression deformation. When the supporting strength of the small convex portion 2 is weak, a small supporting spacer is interposed between the upper surface of the continuous flat portion 4 and the lower surface of the roof tile 6 of the base sheet, and the supporting spacer is used to support the tile. The crosspiece 6 may be supported. Then, the roof 7 is completed by hooking (piling) the tiles 7 on the tiles 6, but in the case of a tiled roof using the base sheet Y of the present application, the bottom surface of the tiles 6 and the continuous surface of the sheet base 1 are used. A gap is provided between the upper surface of the portion 4 and the height of the small convex portion 2. Therefore, even if rainwater W enters through the gap between the roof tiles 7 and 7, the intruding rainwater W flows down the continuous flat portion 4 on the upper surface of the sheet base material.
[0031]
Further, the small convex portions 2, 2... Of the sheet base material 1 are formed with vent holes 3, 3,. It is located at a higher position and has a minute diameter of about 0.5 to 1 mm. Accordingly, even if rainwater W enters the bottom surface of the roof tile and the water droplets are placed on the small convex portions 2 (on the vent holes 3), the water drops have a surface tension function, so that the water has a minute diameter vent hole 3. (The base plate 5 never gets wet).
[0032]
In addition, since each small convex portion 2, 2,... Has air permeability through the vent holes 3, 3,..., Condensation occurs between the field board 5 and the roofing Y even if the temperature drops at night. There is nothing. Further, for example, even in a high humidity state during rainy weather, when the weather is fine (the outside air becomes low humidity), first, as shown in FIG. , 2 from space in ... through each vent hole 3, 3 ... are released into the roofing top side as indicated by reference numeral S ₁ (outside air), followed by (lower surface side of the sheathing roof board 5) ceiling As shown by reference numeral S ₂ , the moisture infiltrates through the field plate 5 or passes through the gaps between the field plates 5 and 5, and moves to the upper surface of the field plate.・ ・ Because it is discharged through the roof top surface, the inside of the attic will dry in a relatively short time.
[0033]
Thus, the roofing Y of the embodiment of the present application has both a waterproof function against intruding rainwater and a humidity releasing function on the lower surface side of the sheet base material, and is effective as a countermeasure against moisture in the attic.
[0034]
In addition to the roof roofing, the building foundation sheet of the present application can also be used as a wall foundation material. In that case, this building base sheet is installed inside the exterior material of the wall body in a state in which the small convex portion protruding side of the sheet base material 1 faces the outer surface side of the building.
[0035]
【The invention's effect】
The building foundation sheet of the present invention has the following effects.
(1) Since a large number of small convex portions 2, 2... Are formed on the sheet base material 1, for example, when used as roofing for a tiled roof, small convex portions are provided between the roofing upper surface and the tile rail 6. A gap can be formed by a height of 2, and the gap serves as an inflow path for the intruding rainwater, thereby preventing the intruding rainwater from being blocked by the roof tile 6.
(2) Since the small convex portions 2, 2,... Are formed at intervals of 10 to 20 mm on the front, rear, left and right sides, when used as roofing for a tiled roof, tile roof 6 (with a width of 30 The lower surface of the tile frame 6 can be supported by a large number (100 to 300 pieces per 1 m of tile tiles) of small convex portions 2, 2,. Each of the small convex portions 2, 2.
(3) Since each small convex part 2, 2,... Is formed with minute diameter vents 3, 3,..., It is possible to ensure air permeability while guaranteeing a waterproof function, and condensation on the inner surface side of the base sheet Can be prevented.
(4) vent 3, the diameter is formed is and the Shototsu portion 2 a fine diameter of 0.5 to 1 mm, if rainwater enters the surface of the small projection forming side of the sheet substrate 1 Even if the water droplet is placed on the vent hole 3, the intrusion rainwater does not pass through the vent hole 3 due to the surface tension function of the water droplet, and the original waterproof function of the base sheet is not impaired.
[Brief description of the drawings]
FIG. 1 is a perspective view when a building foundation sheet according to an embodiment of the present application is used as a roof roofing.
FIG. 2 is a cross-sectional view corresponding to II-II in FIG.
3 is an enlarged sectional view taken along line III-III in FIG.
FIG. 4 is a cross-sectional view of a conventional tiled roof.
[Explanation of symbols]
1 is a sheet base material, 2 is a small convex part, 3 is a vent hole, 4 is a continuous flat part, 5 is a base plate, 6 is a roof rail, 7 is a roof tile, and Y is a roofing.

Claims (1)

On the waterproof sheet base material (1), a large number of small convex portions (2, 2,...) Are formed on one side at intervals of 10 to 20 mm in the front, rear, left, and right directions. A base sheet for construction, wherein a vent hole (3) having a diameter of 0.5 to 1 mm is formed near the center of 2, 2 ,.

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