JPH0519627B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheath board and a roof base structure using the sheath board.

Conventional technology Traditionally, the roof base of a house was constructed by nailing and fixing base boards such as plywood or fiberboard to roof base structural materials such as rafters or mist, and then covering the entire surface with a waterproof sheet such as asphalt roofing. It was fixed with staples.

The above-mentioned waterproof sheet improves the waterproofness of the roof base, but when it is fixed with staples, holes are made or tears occur near the holes. These holes and tears allowed rainwater to penetrate into the base plate, causing corrosion of the base plate and rain leakage.

Furthermore, the work of fixing base plates, laying asphalt roofing, and stapling them is inefficient and may even be impossible, especially when there is wind.

The inventor of the present invention previously proposed a base substrate such as plywood, fiberboard, or wood plank, and a rubber material such as natural rubber or synthetic rubber formed on one side thereof, or such rubber material and asphalt, tar, or synthetic resin. A field board has a waterproof adhesive layer containing an additive such as, and a non-adhesive layer stuck on the waterproof forming layer, and such a field board is placed on the roof of a rafter, mist, etc. with the non-adhesive layer on the upper side. The ends of the above-mentioned field boards are placed on the base frame structural material and fixed with fixing means such as nails, and one side of the sheet-like material is coated with rubber materials such as natural rubber, synthetic rubber, or those rubber materials. A patent application was filed for a roof base structure in which a waterproof adhesive tape with a waterproof adhesive layer containing additives such as asphalt, tar, synthetic resin, etc. is crimped onto the butt end of the roofing board (Japanese Patent Application Laid-Open No.
61-14355). In the previous application, the non-adhesive layer and the waterproof adhesive layer of the roofing board are fixed to roof frame structural materials such as rafters using nails or other fixing means during construction. When a hole is drilled in the nail and a tear occurs, the elasticity and adhesiveness of the waterproof adhesive layer closes the area around the nail and the tear, allowing the nail to adhere and repair itself. In this case, if the nail head is driven hard enough to reach or sink into the board surface, the nail head will destroy those layers over a wider area, so self-repair is not always complete. There will be cases where this cannot be done. Also, if the nail head is placed above the substrate surface, those layers around the nail can be damaged when pressure is applied thereon. Since these parts are covered with waterproof adhesive tape, almost complete waterproofing can be achieved. However, in the unlikely event that the adhesion between the waterproof adhesive tape and the roofing board below it is incomplete, Even if the adhesion is perfect at the time of construction, if there are some areas with poor adhesion later on, this can cause rainwater to seep in.

Purpose of invention Therefore, the present invention has the following objects.

(1) To provide a roof board that is waterproof itself; (2) To provide a roof board that can form an almost completely waterproof roof base; (3) To form a roof base. (4) To provide a roof base structure that is almost completely waterproof; (5) To provide a roof base structure that has good workability and can shorten the construction period. (6) For field boards that have a substrate, a waterproof adhesive layer, and a waterproof sheet, the layer that is torn by the nail head during nail driving will be covered by the nail head due to the flow of the waterproof adhesive layer. To provide a waterproof adhesive layer with fluidity to the extent that it can self-repair, and thereby to provide a complete and durable roof base structure. It is solved by

The roof board according to the present invention has a rubber material such as natural rubber or synthetic rubber on one side of a base substrate such as plywood, fiberboard, or woodcut board, and if necessary, additives such as asphalt, tar, or synthetic resin. A waterproof adhesive layer made of a waterproof adhesive containing the above-mentioned waterproof adhesive layer, and a waterproof sheet layer are formed on the waterproof adhesive layer. The waterproof adhesive layer has such fluidity that it can flow over the nail head and cover the nail head when the nail head is driven into the substrate during nail attachment. The waterproof sheet layer is formed by press-bonding a waterproof sheet made of resin sheet asphalt roofing, asphalt felt, metal foil, or the like. During construction, these roofing boards are fixed to roof framework structural materials such as rafters and mist using nails or other fixing means with the base substrate facing down. The layer has the ability to self-repair holes and tears formed by fixing means such as nails by covering the nail head due to its fluidity and adhesiveness, again forming a continuous waterproof adhesive layer. Therefore,
Completely waterproof. In addition, the waterproof sheet layer is
During storage, transportation, and handling of the field boards, the waterproof adhesive layer provides protection by preventing the field boards from adhering to each other and from adhering to other objects. In particular, the waterproof sheet layer is effective in maintaining the fluidity of the waterproof adhesive. When using such field boards, asphalt roofing,
Since there is no need to use a waterproof sheet such as asphalt felt, work efficiency is improved and the construction period can be shortened.

A roof base structure using such roofing boards is constructed as follows.

The above-mentioned roof boards are laid on a roof base structural material, such as rafters or mist, with the end facing up, and fixed with fixing means such as nails. At this time, the nail head is sufficiently driven so as to reach the substrate surface below the waterproof sheet layer and the waterproof adhesive layer, or to be inserted below the substrate surface. The holes in the waterproof sheet layer and the waterproof adhesive layer formed by the fixing means are self-repaired by the fluidity and adhesiveness of the waterproof adhesive layer, providing complete waterproofness. At the end of the above-mentioned field board, one side of the sheet material is coated with a layer of waterproof adhesive made of a rubber material such as natural rubber or synthetic rubber, and additives such as asphalt, tar, or synthetic resin as needed. A waterproof adhesive tape is crimped to waterproof the gap at the butt end. Therefore, it is completely waterproof, and the work can be completed by fixing the roofing boards and applying waterproof adhesive tape, which greatly improves work efficiency and shortens the construction period.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 shows a cross-sectional view of a field board 10 according to the invention. The roofing board 10 consists of a substrate 11, a waterproof adhesive layer 12 formed on one side thereof, and a non-adhesive layer 13 formed on the entire surface of the waterproof adhesive layer.
The thickness of each layer shown in FIG. 1 is exaggerated and does not represent actual dimensions.

The substrate 11 can be made of plywood, fiberboard, cut wood, or any other plate-shaped body that can be generally used as a roofing board.

The waterproof adhesive layer 12 is made of a rubber waterproof adhesive or adhesive waterproofing agent such as natural rubber or synthetic rubber, or asphalt, tar, etc.
It is formed by applying a waterproof adhesive or adhesive waterproofing agent containing an additive such as a synthetic resin onto the substrate using a coating device such as a roll coater. Although there is no strict limit to the coating pressure, it is generally around 2 mm. In order to expect self-repairability during construction, the waterproof adhesive layer must be able to maintain fluidity and adhesiveness at least until the time of construction. Further, the coating thickness is preferably adjusted depending on the properties of the waterproof adhesive used. Of course, it is desirable that the fluidity and adhesiveness of the waterproof adhesive can be maintained even after installation.

The waterproof sheet layer 13 can be formed by press-bonding a waterproof sheet such as a synthetic resin sheet, asphalt roofing, asphalt felt, or metal foil using a laminating device or the like.

A roof base structure using the shedding board according to the present invention will be described below, but since the characteristics of the shedding board itself have already been described in detail, their explanation will be omitted.

FIG. 2 is a sectional view of a roof substructure according to the present invention. Roof base frame structural materials such as rafters and mist 1
4, the above-mentioned roofing boards 10 are laid with the wood ends butted together, and fixed by fixing means 15 such as nails. Although the waterproof sheet layer and the waterproof adhesive layer are punctured or damaged by the fixing means, the fluidity and adhesiveness of the waterproof adhesive layer cover the nail heads and completely repair themselves. This state is shown in FIG.

In addition, on one side of the sheet material, apply a rubber waterproof adhesive such as natural rubber or synthetic rubber, or an adhesive waterproofing agent, or asphalt, tar, or synthetic resin as necessary to the end of the roofing board. A waterproof adhesive tape 20 coated with a waterproof adhesive or an adhesive waterproofing agent containing additives such as the like is attached by pressure bonding. This results in a completely waterproof roof substructure.

FIG. 4 is a sectional view of the waterproof adhesive tape 20, which includes a base sheet 21 and a waterproof adhesive layer 22 formed on one side thereof. The base sheet 21 may be a waterproof sheet such as a synthetic resin sheet, asphalt roofing, asphalt felt, or metal foil, or a non-waterproof sheet such as thin paper, nonwoven fabric, or cloth. The waterproof adhesive layer 22 is coated with a waterproof adhesive or adhesive waterproofing agent similar to that used for the roofing board 10 using a coating device such as a flow coater. The coating thickness may be equal to or less than the coating thickness for the roofing board. Such waterproof adhesive tape 20 can be wound into a roll with a release paper interposed therebetween, for example.

Regarding the functions and effects of the present invention, see "Configuration of the Invention"
As stated in the section above, I will not repeat it.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a field board according to the present invention, and FIG.
Figure 3 is a sectional view of the roof substructure according to the present invention.
The figure is a cross-sectional view showing a self-repaired state in which the waterproof adhesive layer flows over the head of the nail after the nail is attached, and FIG. 4 is a cross-sectional view of the waterproof adhesive tape used in the roof base structure according to the present invention. Explanation of symbols, 10... Field board, 11... Board,
12...Waterproof adhesive layer, 13...Waterproof sheet, 14
... Roof base frame structure, 20 ... Waterproof adhesive tape, 21 ... Base material sheet, 22 ... Waterproof adhesive layer.

Claims (1)

[Scope of Claims] 1. A base substrate such as plywood, fiberboard, or wood cutting board, and a rubber material such as natural rubber or synthetic rubber formed on one side thereof, or such rubber material and asphalt, tar, or synthetic resin. A waterproof adhesive layer containing additives such as
a waterproof sheet layer stuck on the waterproof adhesive layer, and the waterproof adhesive layer flows into the sunken hole of the nail head formed by driving the nail during construction and seals the nail head. A field board characterized by having viscosity. 2 A base substrate such as plywood fiberboard or cut wood board, and a rubber material such as natural rubber or synthetic rubber formed on one side thereof, or a waterproof adhesive containing such rubber material and an additive such as asphalt, tar, or synthetic resin. layer, and a waterproof sheet layer stuck on the waterproof adhesive layer,
The above-mentioned waterproof adhesive layer flows into the sunken hole of the nail head formed by driving the nail during construction, and the roofing board has such a viscosity that it seals the nail head. The ends of the above-mentioned roof boards are placed on the roof framework structure material, and the ends are fixed using nails or other fixing means, and one side of the sheet-like material is covered with rubber such as natural rubber, synthetic rubber, or other rubber materials. , a roof base structure formed by pressing a waterproof adhesive tape formed with a waterproof adhesive layer containing additives such as asphalt, tar, synthetic resin, etc. onto the butt end of the roofing board.