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Waterproof roofing and basement waterproofing require different material properties, while bathroom waterproofing and wall waterproofing are more different. Slope roofs and roofs with complex shapes are also different, and materials should be selected carefully.

Building materials selection

1. Roofing waterproof layer

The roof waterproof layer is exposed to nature, exposed to hot sunlight, strong winds, rain and snow erosion, severe cold and heat temperature, repeated expansion and contraction of the temperature difference between day and night, without good material properties and good protection measures. It is difficult to achieve the required durability.

Therefore, a waterproof material with high tensile strength, high elongation and good aging resistance should be selected. Such as polyester tire polymer modified bitumen coil, EPDM rubber coil, P-type PVC coil (welded seam), one-component polyurethane coating (plus protective layer).

2. Wall waterproof

The reason why the wall leaks is that the current wall is too thin, mostly made of light block masonry, with a large number of internal and external joints, and the joints between doors and windows and the wall are not tightly sealed, and rainwater seeps through the joints. Coiled materials can not be used for wall waterproofing, only paint, and combined with exterior decoration materials. Only sealing paste can solve the problem of window installation seams.

3. Waterproofing of underground buildings

The underground waterproof layer is soaked in water or very moist soil for many years, and the waterproof material must be water resistant. The roll material made of perishable carcass cannot be used. The waterproof layer of the bottom plate should be thick and have a certain ability to resist punctures. It is best to laminate 6mm~8mm thick. If synthetic polymer coils are used, it is best to heat weld the seams. For those who use adhesive to join the seams, the glue should be excellent in water resistance, otherwise the best coils cannot be used. Use waterproof coatings with caution. The thickness is 2.5mm when used alone, and 2mm when used in combination with the coil.

4. Toilet waterproof

There are three characteristics of bathroom waterproofing. First, it is not affected by the natural climate, the temperature changes little, and the elongation rate of the material is not high; the second is the small area, the yin and yang corners are many, and the floor slab is more pipes; the third is the tile on the waterproof layer of the wall, and the adhesion The binding agent has good affinity. According to the above three characteristics, coiled materials cannot be used. Only the paint is the most suitable. The cement-based acrylic paint is the most suitable paint, which can firmly stick the tiles on it.

5. Overpass waterproof

There are more and more overpass projects in urban construction. Reinforced concrete beams and slabs must be waterproof to extend their service life. As the high-temperature asphalt concrete pavement is spread on the waterproof layer, the waterproof layer should withstand a high temperature of 110°C. Choose APP modified bitumen coil.