When purchasing polyurethane waterproof coating, it is recommended to go to well-known brand stores or regular building materials markets to purchase, and the product needs to have a certificate of conformity, product testing report, and CTC mark, which must be checked carefully.

When choosing polyurethane waterproof coatings, it is important to master some techniques to choose more environmentally friendly waterproof coatings, so as not to affect the health of family members.

3. When choosing polyurethane waterproof coatings, try to choose coatings with strong crack resistance and deformation, because the structure of residential buildings is more complex, so it is important to pay attention to crack bridging performance and require waterproof coatings to resist crack deformation exceeding 4 millimeters