JPH0379499B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waterproofing construction method suitable for rooftop waterproofing of buildings, and particularly for rooftops equipped with complex-shaped protrusions.

Various methods are used to waterproof the rooftops of buildings, such as paint film waterproofing, sheet waterproofing, and metal plate waterproofing.
Paint waterproofing and sheet waterproofing have been used for a long time, and have the advantage of being easy to adapt to complex shapes, but they have a short service life, often require repair work, and are particularly effective against vibrations. The lifespan is particularly short in buildings and areas subject to temperature changes. There are many drawbacks, such as the fact that in most cases, a complete restoration is required. In addition, metal plate waterproofing is significantly superior to paint film waterproofing or sheet waterproofing in terms of mechanical strength, weather resistance, durability, etc., but because of its strength, it is difficult to adapt to irregularities and special shapes of the building structure. , construction becomes difficult. Further, for example, if there is a cylindrical protrusion on the roof, construction may not be possible.

The present invention was made in view of the above circumstances, and
When waterproofing roofs, etc., we use metal plates to waterproof general areas that are flat or have simple irregularities, and for closing areas with special shapes, we use flexible sheet materials on metal plates to make them watertight. It is characterized in that it is bonded together and is applied and stored using the flexibility of the flexible sheet-like material, thereby,
To make it possible and easy to perform metal sheet waterproofing on roofs with special shapes such as cylindrical or irregular projections that were difficult or impossible to install in the past, and to aim for widespread use of metal sheet waterproofing. It is something.

In waterproofing the upper part of the building structure, the floors, corners,
If there is a protrusion such as a duct in the area around the parapet or on the floor, if the protrusion is simple and rectangular in plan, the area around the protrusion should be connected with a waterproof metal plate or folded. It is possible to construct using conventional methods such as bending or cutting, but if there are protrusions with circular cross sections or complex shapes such as ventilation equipment or steam pipes, such as on the roof of a thermal power plant, Since waterproof metal plates do not conform to three-dimensional curved surfaces, metal plates cannot be used for waterproofing construction on such structures.

The present invention is particularly designed to facilitate the construction of waterproof metal plates in places where there are protrusions with such complex shapes.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking construction around a cylindrical protrusion as an example.

The waterproof metal plate used in the present invention may be made of a material suitable as a waterproof surface material, such as a conventionally known waterproof metal plate such as a stainless steel plate.

As shown in FIG. 1, a cylindrical protrusion B, such as an exhaust pipe, protrudes from the flat floor A on the roof of the building frame to be constructed. For the floor part A up to the vicinity of the protrusion B, as in the conventional method, a band-shaped metal plate 1 is
The ribs 2, 2, . . . on their sides are joined and welded to each other. Then, the respective ends of these metal plates 1, 1... are bent to form raised parts 3, 3..., and the raised parts 3, 3... are also welded together to form the protrusion B. A stand-up box portion 4 having a rectangular planar shape is formed at the base.

Next, a large number of small holes 5, 5, . Although the small hole 5 has a circular shape in the drawings of the embodiment, the shape of the hole can be determined as appropriate, such as a long hole or an irregular hole.

Various methods can be considered for adhering this flexible waterproof sheet-like material 6. Figures 5 and 6 show an example of this, in which two waterproof sheets 7, 7 are attached using adhesive 8, sandwiching the edges of the metal plate 1 including the small holes 5 from both sides. Combine watertightly. The waterproof sheet 7 is preferably made of a polymer material such as EPDM+butyl rubber or rubber asphalt, and the adhesive 8 is preferably a butyl rubber or neoprene rubber adhesive. In addition, when adhering the waterproof sheets 7, 7, the small holes 5 are filled with the adhesive 8, so that the adhesive applied to both sides of the metal plate 1 is continuous through the small holes 5. This increases the adhesive strength between the metal plate 1 and the waterproof sheet-like material 6 and ensures watertightness.

7 and 8 show other examples of adhesion of the waterproof sheet-like material 6. In the example shown in FIG. After pasting a net-like core material 9 such as cloth, a waterproof membrane material 10 is applied to both surfaces thereof. In addition, in the case of FIG. 8, instead of the glass cloth described above, a core material 9 of wire mesh is used on the metal plate 1.
After welding to the edge of the waterproof membrane material 10 on both sides.
It is painted on. Suitable examples of the waterproof membrane material 10 include acrylic rubber, rubber asphalt, and silicone resin. Further, when attaching the net-like core material 9 or applying the waterproof membrane material 10, heat may be applied to the edge portion of the metal plate 1 to heat-seal the adhesive.

When adhering the above-mentioned flexible waterproof sheet-like material 6 to the metal plate 1, the stand-up box part 4 is usually attached to the base of the protrusion B.
After forming, on-site construction is performed on the metal plate 1.
Instead of such on-site construction, it is also possible to adhere the waterproof sheet-like material 6 to the metal plate 1 finished to predetermined dimensions in advance at a factory or near the site, and then carry it to the site for construction.

The waterproof sheet-like material 6 adhered to the edge of the metal plate 1 of the stand-up box part 4 is attached to the circumferential surface of the protrusion B as shown in FIG. At the same time, the upper edge of each waterproof sheet-like material 6 is also bonded to the circumferential surface of the protrusion B using an adhesive.

When the waterproof sheet-like material 6 is constructed on-site in an embodiment in which it is formed of a net-like core material 9 and a waterproof membrane material 10 as shown in FIGS. 7 and 8, the mesh-like core material is 9 is wrapped and glued around the outer circumference of the upper edge of the stand-up box part 4, and waterproof membrane material 10 is glued on both sides of the net-like core material 9 to form a waterproof sheet-like material 6. Alternatively, after the upper edge of the net-like core material 9 is squeezed and adhered to the circumferential surface of the projection B, the waterproof membrane material 10 is adhered to the surface of the mesh-like core material 9. do.

Once the waterproof sheet-like material 6 has been adhered to the circumferential surface of the protrusion B as described above, the metal draining plate 12 is wrapped around the circumferential surface of the protrusion B as shown in FIG. , its upper half is glued to the protrusion B, its lower half is made into a skirt part 12a, and this is attached to the waterproof sheet-like material 6.
It is crowned on the upper edge of the . In this case, skirt part 1
2a and the waterproof sheet-like material 6 may be simply joined together watertightly with adhesive, but as shown in FIG. The portion 12a may be bound 13 by rivets or the like. In addition, when the protrusion B is made of metal, the metal draining plate 12
is preferably adhered to the protrusion B by welding, but if the protrusion B is made of concrete, the concrete may be burred all around and the metal drain plate 12 may be caulked there. With the above steps, the waterproofing work around the protrusion B from the floor A is completed.

As explained above, according to the present invention, a waterproof metal plate laid on a floor is bent near a protrusion to form a stand-up box part around the protrusion, and the stand-up box part A large number of small holes are drilled in the upper edge of the
A flexible waterproof sheet-like material is watertightly glued across the edges including the small holes, and the waterproof sheet-like material is watertightly glued to the circumferential surface of the protrusion.
The waterproof metal plate and the flexible waterproof sheet-like material are not simply joined together; the waterproof sheet-like material is glued to sandwich the waterproof metal plate, and the same materials are partially bonded together through small holes in the waterproof metal plate. Therefore, the adhesive strength is high and watertightness can be maintained. By combining a waterproof metal plate and a flexible waterproof sheet-like material, the general parts of rooftop waterproofing are made of highly durable and strong metal waterproofing, and the closing parts such as complex-shaped protrusions are covered with waterproof sheet-like materials. This can be easily done by waterproofing with materials. In addition, even if water leaks occur over time in the area where the waterproof sheet-like material has been constructed, it is possible to simply repair that area partially, rather than having to repair the entire surface as required in the past. , which has many excellent effects.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a perspective view showing a raised box part formed around a roof projection by a waterproof metal plate, and Fig. 2 shows a waterproof case bonded to a waterproof metal plate. A perspective view showing a state in which a sheet-like material is adhered to a protrusion, Fig. 3 is a perspective view showing an example of gluing a mesh core material to a stand-up box part and adhering this to a protrusion, and Fig. 4 is a perspective view showing a state in which a sheet-like material is adhered to a protrusion. A slope view showing a state in which the edge of a waterproof sheet-like object adhered to an object is covered with a drain plate;
FIG. 5 is a perspective view showing an example of adhesion between a waterproof metal plate and a waterproof sheet-like object, FIG. 6 is a side sectional view of the same, FIG. 7 is a side sectional view showing another example, and FIG. The figure is a side sectional view showing still another embodiment. A...Floor part, B...Protrusion, 1...Metal plate, 3
... Standing part, 4... Standing box part, 5... Small hole,
6... Waterproof sheet-like material, 7... Waterproof sheet, 9...
...Mesh core material, 10...Waterproof membrane material, 12...Draining plate.

Claims (1)

[Claims] 1. Bend the end of the waterproof metal plate laid on the floor near the protrusion, form a stand-up box part around the protrusion, and make a number of small holes in the upper edge of the stand-up box part. is characterized in that a flexible waterproof sheet-like material is glued between the edges including the small holes, and the waterproof sheet-like material is watertightly glued to the circumferential surface of the protrusion. , waterproofing construction method.