Five basic conditions for choosing a waterproof coating

Many people have a vague knowledge of waterproofing. What kind of waterproof coating is a good material? This is the biggest problem encountered in waterproof engineering nowadays. Because waterproof coating is fundamental, if it is not done at all, the following work is only Can be in vain.

Waterproof materials should meet 5 conditions:

1, paint performance should be fully exerted

Different waterproof coatings have their own strengths and defects, and their use is long and short. Such as high-density polyethylene geomembrane, poor flexibility, it is difficult to use in roof waterproofing. However, it has high strength, strong resistance to root puncture, width up to 7m wide, and weld seams. These advantages are used in the wide-ranging landfills and the waterproofing of rivers and ponds. It is irreplaceable by other materials.

Cement-based propionic acid waterproof coatings are not as good as polyurethane coatings, but acrylate coatings can be applied on wet substrates, while polyurethane coatings cannot.

2, the physical properties of waterproof coatings are better

Physical properties such as tensile strength, elongation at break, water impermeability, high temperature flexibility, and natural aging resistance can all meet the national standards. In addition, there is construction operability, that is to say, it is simple and convenient, does not cause damage to the construction gas, and has many advantages and disadvantages compared with other waterproof materials. Such materials are good materials.

3. Match the importance of the building

High-quality and high-priced SBS modified asphalt coils and EPDM coils are good materials for first- and second-tier buildings, and “materials” for low-grade buildings. Such as construction sheds, short-term warehouses, disaster relief shacks, etc., after one or two years of demolition, the use of high-quality paint is a waste.

4, good adaptability to the construction site

The types of waterproof coatings are different, and the adaptability to different building parts is also weak. The coil material is used for paving a large area of ​​waterproof parts, and the construction is fast, and the quality is easy to ensure. However, it is useless in waterproofing in the toilet room, and the waterproof coating is a good material that is handy. Rigid waterproof materials are used in structurally stable areas where there is no chattering deformation. For example, the basement wall and the bottom plate are waterproof as a waterproof, but if used for bridges and large-span roofing, the effect is poor, heavy and waste materials.

5, pay attention to construction operability

Some waterproof materials have good physical properties, but they are difficult to construct. For example, if the anti-adhesive coil is used, it is difficult to seal the joint, and the powdery material is difficult to spread evenly, and it is more difficult to close and spread.

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