JPH01210560A - Sheet water-proof-joint mechanism - Google Patents

Abstract

PURPOSE:To prevent the firmly fitted joint section of a water-proof sheet peripheral-edge from being damaged, by contriving the fluctuation of the joint of a band-formed plate not to be directly worked on the edge section of a water-proof sheet which is laid on a flat roof and is firmly fitted on a fixing band plate at the tip of a pent roof. CONSTITUTION:On the tip section upper-surface of the part roof metal fittings 2 of a flat roof, a fixing band steel plate 3 is fixed with screws 5, and so far as the joint 4 section of the ends of the band steel plates 3, 3 butted to each other is concerned, on its upper surface, an insulating tape 7 is fitted, and the joint 4 is closed. On the upper surface of the insulating tape 7 and on the lower surface of the band steel plate 3, a protective tape 8 is folded back at the tip section of a pent roof and is 'U'-formed, and is fitted without being firmly fitted on the insulating tape 7 and the lower surface of the band steel plate 3. Then, the peripheral edge section of a water-proof sheet 1 laid on the flat roof is bonded and fixed on the upper surface of the protective tape 8 fitted on the upper surface of the band steel plate 3 and the joint section.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a joint structure in a waterproof sheet laid on a flat roof of a building.

[Problem to be solved by the invention]

Conventionally, a waterproof sheet placed on a flat roof is shown in Figure 4.
It had a structure in which the peripheral edge of the waterproof sheet 1 was directly bonded and bonded onto the fixing strip steel plate 3 attached to the tip of the bottom hardware 2. Therefore, when the joint part 4 where the steel plates butt each other moves slightly due to the influence of external force or expands and contracts due to temperature changes, the waterproof sheet in this part is always under the external force and remains in the nominal layer, making it waterproof. The fit was not reliable in terms of the durability of the seat.

This invention was made in view of the above circumstances. The purpose of this is to improve the durability of the joints at the ends of the eaves of the tarpaulin sheets, so that fluctuations in the joints where the fixing strips butt do not directly affect the tarpaulin sheets laid on top of them. We propose a joint structure.

[Means and Examples for Solving the Problems] The joint structure of this waterproof sheet is a sheet in which the edges of a waterproof sheet laid on a flat roof are fixedly joined to a fixing strip plate attached to the tip. In the waterproof joint structure, an insulating tape is pasted to the joint where the fixing strips are butted against each other to close the joint, and a folded protective tape is placed on the upper and lower surfaces of the joint to prevent it from adhering to the insulating tape. It is characterized by the fact that it is attached.

The following will explain the embodiments shown in the drawings. In Figure 1.2.3, a fixing strip steel plate 3 is fixed to the upper surface of the tip of the eave hardware 2 of a flat roof with screws 5, and a double-sided adhesive butyl rubber tape 6 is inserted and adhered between them. It is watertight. The joint 4 portion where the ends of the strip steel plates 3.3 are butted is closed by pasting an insulating tape on its upper surface. The protective tape 8 is folded back at the tip of the eaves to form a U-shape on the upper surface of the insulating tape 7 and the lower surface of the steel strip 3, so that it can be attached without sticking to the insulating tape or to the lower surface of the steel strip 3. be. The peripheral edge of the waterproof sheet 1 laid on the flat roof is adhesively fixed to the upper surface of the strip steel plate 3 and the protective tape 8 attached to the joint portion.

In addition, a part of the bottom light corner of the flat roof has a corner accessory L.
A strip steel plate with a shape of 3" is used.

The insulating tape used in this joining structure is made of a relatively flexible synthetic resin film. The protective tape preferably has a width equal to or wider than the joint tape, has elasticity comparable to or greater than that of the waterproof sheet, and has good adhesion to the waterproof sheet. For example, if the waterproof sheet is made of vinyl chloride resin as a base material, it is preferably made of the same type of resin. Normally, the protective tape can be attached to the folded joint in a U-shape, but it is not limited to the U-shape. The folded ends may be overlapped to form an annular shape.

[For production]

The joint structure of this waterproof sheet consists of the above configuration, and the third
As shown in the figure, the joint where the ends of the steel strips 3.3 for fixing are butted together is sealed with insulating tape 7, and the folded protective tape 8 is fixed to the insulating tape 7 on the upper and lower surfaces. You can attach it without doing anything. Since the waterproof sheet has a structure that is fixed on top of it, it is insulated from the joint between the strip steel plates 3.3, and fluctuations in the joint do not directly affect the waterproof sheet. It is transmitted in a relaxed manner. Therefore, it is possible to prevent damage to the waterproof sheet due to fluctuations in the joints.

〔Effect of the invention〕

This invention is as described above, and fluctuations in the joints of the strips do not directly act on the edges of the waterproof sheet laid on a flat roof that are fixed to the fixing strips at the tip of the eaves, and the periphery of the waterproof sheet Damage to fixed joints is less likely to occur and long-term durability is possible.

[Brief explanation of the drawing]

1.2.3 are a perspective view, a sectional view, and an AA sectional view showing a joint structure of a waterproof sheet according to an embodiment, and FIG. 4 is a perspective view showing a conventional joint structure. 1... Waterproof sheet, 2... Eaves hardware, 3... Strip steel plate for fixing, 4... Joint, 5... Screw, 6... Butyl rubber tape, 7... Insulating tape , 8... Protective tape.

Claims (1)

[Claims] (1) In a sheet waterproof joint structure in which the edges of a waterproof sheet laid on a flat roof are fixedly joined to a fixing strip plate attached to the tip, the fixing strip plates are butted against each other. The joint structure of the waterproof sheet is characterized in that insulating tape is attached to the joint part to close the joint, and folded protective tape is attached to the upper and lower surfaces of the joint part without sticking to the insulating tape.