The waterproof height of walls in damp areas of kitchens and bathrooms (such as shower rooms and bathtubs) shall not be less than 1800mm, and the waterproof height of walls in dry areas shall not be less than 300 mm.

Toilet floor waterproofing

Water storage test must be done for the toilet structure ground, and the general contractor is responsible for water storage. After the water storage test is completed, it shall be signed by the supervisor, the owner and the general contractor as the handover acceptance procedures.

Waterproof layer water storage test

After the completion of the ground drainage system and waterproof layer of the decoration construction, the decoration construction unit will do the water storage test again, and it is strictly forbidden to do the water storage test before the waterproof layer dries out. If the water becomes turbid or milky white in the process of water storage, it means that the curing time of the waterproof layer is not enough, the waterproof layer has been dissolved and destroyed by water, and the waterproof layer has failed and must be redone.

Types of waterproof coatings on the market

There are several kinds of waterproof coatings on the market: water-based asphalt waterproof coating, water-based PVC tar waterproof coating, PVC elastic waterproof coating, soap emulsion asphalt solvent-based rubber asphalt waterproof coating, polymer emulsion building waterproof coating and polymer cement waterproof coating.