Which method is good for waterproof and leak-patching?

There are many ways to prevent water leakage, which method to choose depends on the specific situation. The following are several common waterproof and leak-patching methods:

1. silicone sealants: Suitable for small area water leakage, and can be directly applied to the water leakage.

2. Asphalt coating: It is suitable for large-area waterproof and leak-patching, such as roofs and basements, and can form a thick waterproof layer.

3. Polyurethane coating: it is suitable for waterproofing and leakage repair of roofs, basements and other large areas, and has good weather resistance and chemical corrosion resistance.

4. Cement mortar: It is suitable for water leakage in small areas such as walls and floors, and can be used to fill cracks and holes.

5. Waterproof coiled material: it is suitable for large-area waterproofing and leakage patching such as roofs and basements, and can form a sealed waterproof layer.

The above methods have their own advantages and disadvantages, and the specific choice of which method depends on the actual situation.