JP3088693B2 - Leakage prevention structure for roof shingles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof under roof which is capable of reliably preventing water leakage from staple holes even if there is rainfall after roof under roofing material is installed and before roof over roofing material such as tiles is installed. The present invention relates to a structure for preventing leakage of roofing material.

[0002]

2. Description of the Related Art Roof underlaying materials are applied for the purpose of waterproofing, and they are attached while forming an overlapping portion from the eaves side of the sloped roof to the ridge side, and staples are driven into the overlapping portion and fixed to the base plate.

In the case of a roof area of 50 tsubo, the above stapling reaches about 3,000, resulting in perforating the roof underlaying material by the number thereof, which impairs waterproofness. However, in the case of rainfall after roofing materials such as tiles have been installed, even if rainwater flows around the roofing materials, the rainwater will be in a “flow” state, and the relationship with surface tension will also be affected. Therefore, almost no water leakage from the staple holes is observed experimentally.

[0004] However, it has been pointed out that if rainfall occurs before roofing materials such as tiles are installed, there is a possibility of water leakage from staple holes. However, asphalt roofing used as a roof underlaying material is made by applying asphalt felt obtained by impregnating paper with asphalt or pitch, and applying blown asphalt mixed with filler on both sides thereof, so that the hydrophobic property of the asphalt itself is It has been confirmed that it exhibits high sealing properties due to its viscoelasticity and does not cause a water leakage problem with a little rainfall.

[0005]

However, after the roof underlaying material has been constructed, before the roof overlaying material such as tiles is constructed,
Heavy rain (about 20mm / H) or heavy rain (50mm / H)
), Water leakage from the staple holes was possible. As a result of repeated experiments on the water leakage phenomenon, the present inventor has found that even if the roofing material itself exhibits high sealing properties, water leakage occurs due to suction of moisture adhering to the staples by the base plate. discovered.

[0006] The present invention has been completed based on the above findings, and it is possible to ensure that even if there is strong rain or heavy rain on the stapled roof lowering material before installing the roofing material such as a tile. It is an object of the present invention to provide a structure for preventing water leakage from a roofing material, which can prevent water leakage.

[0007]

In order to achieve the above-mentioned object, the present invention provides an adhesive tape having a water-repellent treatment on its upper surface at a place where a staple is to be driven, on a base plate for stapling a roofing material. The base plate into which the staples were driven was not sucked in the moisture attached to the staples.

The invention according to claim 2 is characterized in that the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape is made of rubber-containing asphalt, and the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape itself can be provided with high sealing performance.

[0009]

Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an enlarged sectional view schematically showing the structure of the present application, and FIG. 2 is an enlarged sectional view showing a configuration of a roofing material suitable as a roofing.
(B) is a β type, FIG. 3 is a perspective view showing a state where a staple driving point is defined on the upper surface of the sloped roof, and a part of an adhesive tape is stuck on the defined point, and FIG. FIG. 4 is a cross-sectional view partially showing a roof on which is laid.

In FIG. 1, reference numeral 1 denotes the structure of the present invention. In the structure 1 of the present invention, as shown in FIG. 1, an adhesive tape 6 provided with a water-repellent treatment layer 5 on one surface is attached to an upper surface of a base plate 4 of a roof Y for fixing the roof underlaying material 2 with staples 3. Are stopped by the staples 3. The adhesive tape 6 is 1
A tape having a width of about 00 mm is suitable, but may have a width equivalent to that of a commercially available gum tape used as a packaging material.

As long as the adhesive tape 6 has a water-repellent treatment layer 5 on one surface, a commercially available adhesive tape may be used, but it is more preferable that the adhesive surface 6a be a waterproof and adhesive layer. .

The waterproof / adhesive layer is preferably made of rubber-containing asphalt. In this case, it does not matter whether the base asphalt is straight asphalt or blown asphalt. Fillers such as talc and slaked lime may be mixed into the base asphalt as needed.

The rubber to be mixed with the base asphalt is preferably butyl rubber. That is, in the adhesiveness,
This is because they have excellent low-temperature characteristics and high-temperature characteristics, and also greatly improve the staple hole sealing performance.

The water repellent layer 5 formed on the upper surface of the adhesive tape 6 may be provided with a water repellent by applying a release agent (such as applying a silicon solution) to the tape base material, Water repellency may be imparted by a method.

Further, on the surface of the tape substrate on which the water-repellent treatment layer 5 of the adhesive tape 6 is applied, pictures or characters may be printed or colored in advance in order to improve the commercial value. is there.

The roof underlaying material 2 includes an α type and a β type. As shown in FIG. 2 (a), the α-type one is formed by laminating asphalt layers 2b and 2c above and below a core material 2a obtained by impregnating paper with asphalt, and applying a sand or paint coating layer on the upper surface of the upper asphalt layer 2b. 2
d, and a nonwoven fabric 2e is provided on the lower surface of the lower asphalt layer 2c.

As shown in FIG. 2 (b), the β type is made of paper having a core material 2a and an asphalt layer 2 above and below the core material 2a.
b and 2c are laminated, a surface asphalt layer 2b 'is provided on the upper surface of the upper asphalt layer 2b with a nonwoven fabric 2e interposed therebetween, and a sand or paint application layer 2d is further provided on the surface thereof, and the same applies to the lower surface of the lower asphalt layer 2c. Is provided with a sand or paint coating layer 2d.

Next, the construction procedure of the structure 1 of the present application will be described with reference to FIGS.
It will be described based on. First, on the upper surface of the roof Y, a location K where the staples 3 are to be driven into the roof lowering material 2 is defined.
The adhesive tape 6 is attached to the defined staple driving point K in a direction perpendicular to the flow direction of the roof Y with the water-repellent treatment layer 5 facing upward.

The staple driving point K is formed by overlapping the roof underlaying material 2 from the eaves side to the ridge side with a certain (approximately 10 cm) overlapping part W, and overlapping the eaves part N with the overlapping part W and the ridge part. The position corresponds to M. This location K can be easily defined by taking into account the width of the roofing material 2 and the width of the adhesive tape 6.

After the adhesive tape 6 is applied to the location K, the roof underlaying material 2 is laid on the roof Y in order from the eaves of the eaves while forming an overlap W, and the hammer tacker is attached to the eaves N, the overlap W and the ridge M. Then, the staples 3 are driven into the base plate 4 to complete the structure 1 of the present invention.

Since the roof underlaying material 2 reinforced by the nonwoven fabric 2e is excellent in strength in both the α type and the β type, the roof underlaying material 2 is provided at an intermediate point between the overlapping portion W and the overlapping portion W (the roof Even if the middle point (P) in the width direction of the underlaying material 2) is not stopped by the staples 3, it will not be broken even if it is fanned by wind during construction.

However, when a general roofing material 2 not reinforced by the nonwoven fabric 2e is used, the position corresponding to the intermediate point P in the width direction of the roofing material 2 is also defined as the position where the adhesive tape 6 is applied. However, it may be necessary to apply the adhesive tape 6 to the location in advance.

[0023]

EXPERIMENTAL EXAMPLE 1 A commercially available 22 kg asphalt roofing was cut to a size of 2 m ² , and the asphalt roofing was formed by driving 50 staples into the upper surface of a base plate having the following specifications.

In the case where an adhesive tape 6 using rubber-containing asphalt having a water-repellent treatment layer on the adhesive surface is previously applied to the upper surface of the base plate. When a commercially available gum tape whose surface has been peeled off is pasted on the upper surface of the base plate in advance. When nothing is stuck on the upper surface of the base plate.

The base plate on which the asphalt roofing was applied as described above was installed with an inclination (gradient of 4.5 mm) and sprinkled with water for 24 hours, and a water leak test was conducted.
The following table shows the results.

Table------------------------------------------------------------------------------------------------------------------- H (Shint and rain) (Heavy rain) (Heavy rain) --------------------------------------------- Example) 0/50 0/50 0/50 specification (example of the present application) 0/50 0/50 2/50 specification (comparative example) 0/50 14/50 43/50 -------------- −−−−−−−−−−−−−−−−−−−−−−−−−−−

As a result of the above table, when the roof lowering material 2 is stapled on a base plate of a specification in which an adhesive tape 6 using a rubber-containing asphalt having a water-repellent treatment layer on the surface is used as an adhesive surface, the violence is severe. Even if water was sprayed at 50 mm / H corresponding to rain, no water leaked from the staple holes.

On the other hand, a roof underlaying material 2 was attached to a base plate having a specification to which a commercially available gum tape whose surface had been peeled off was pasted.
5 stapled, which corresponds to heavy rain
When water was sprayed at 0 mm / H, only two leaks were found from the staple holes, but generally no leak occurred from the staple holes.

Further, when the roof underlaying material 2 is stapled on a base plate having no specification, no water leaks from the staple holes when water is sprayed at a rate of 1 to 2 mm / H, which is equivalent to rain. Although not generated, water leakage from the staple hole at 14 mm at 20 mm / H corresponding to heavy rain, and 43 water leakage from the staple hole at 50 mm / H corresponding to heavy rain. You can see that.

[0030]

As described above, the present invention is characterized in that a water-repellent adhesive tape is applied to the upper surface of a base plate for stapling a roof underlaying material at a place where a staple is driven. Therefore, the water adhering to the staples and entering the staples is repelled by the water-repellent treatment layer of the adhesive tape, and has an excellent effect of not invading the base plate side.

Further, the invention according to claim 2 is characterized in that the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape is made of rubber-containing asphalt, so that the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape itself has high sealing performance. This is an excellent effect that the water leakage prevention effect is higher than that of a gum tape that cannot exhibit such sealing performance.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view schematically showing the structure of the present application.

FIGS. 2A and 2B are enlarged cross-sectional views showing the configuration of a roofing material suitable for roofing, where FIG. 2A is an α type and FIG. 2B is a β type.

FIG. 3 is a perspective view showing a state in which a staple driving point is defined on the upper surface of the sloped roof, and a part of an adhesive tape is stuck to the defining point.

FIG. 4 is a cross-sectional view partially showing a roof on which a roofing material is laid using the structure of the present application.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Application structure 2 Roof underlay material 2a Core material 2b, 2b 'Upper asphalt layer 2c Lower asphalt layer 2d Sand or paint coating layer 2e Nonwoven fabric 3 Staple 4 Base plate 5 Water-repellent treatment layer 6 Adhesive tape 6a Adhesive surface Y Roof N eaves front M ridge W overlap

Claims (2)

(57) [Claims] 1. A structure for preventing water leakage of a roof underlay material, characterized in that an adhesive tape having a water-repellent treatment applied to an upper surface thereof is applied to a place where a staple is to be stuck on a base plate for stapling the roof under roof material. 2. The structure according to claim 1, wherein the adhesive surface of the adhesive tape is rubber-containing asphalt.