The application scope of polyurethane waterproof coating is roof, bathroom and basement. Before use, the sundries at the grass-roots level should be cleaned up, and some ash skin stuck on the grass-roots level should be removed with a spatula, especially the parts such as drain and floor drain, and it should be cleaned carefully. If there is oil stain, it should be polished off with steel ball or wire brush and sandpaper. And the sunken place should be smoothed with sandpaper.
Mix polyurethane coatings A, B and xylene evenly according to the weight ratio of 1 ratio 1.5 to 0.2. Be careful not to brush too thin or too thick, and naturally dry for about 4 hours after brushing.
Extended data:
Precautions:
1, and the thinner cannot be alkyd paint thinner, nitrolacquer thinner, etc. Try the xylene diluent bought in the market first, otherwise it may cause the mixture not to solidify and bubble.
2, polyurethane waterproof coating should be placed in a dry and ventilated room, can't direct exposure for a long time, it is forbidden to contact with water. The unused components A and B should be sealed with a lid immediately after the barrel is opened.
3. Paint should be applied immediately, depending on the temperature, and it will be used up in 20-40 minutes. The construction temperature should be 5 ~ 35℃; When the temperature is lower than 10℃, the reaction curing time of mixture A and mixture B will be correspondingly prolonged. If the temperature is lower than 5℃, it will cause non-reactive curing. When the temperature exceeds 30℃, it can't be constructed in the open air, otherwise the coating will quickly crust due to the high surface temperature, and the lower layer can't cure and blister.
4. Before protection construction (coating is not done), it is forbidden to walk on the waterproof layer to prevent trampling from damaging the coating waterproof layer. If the coating is found to be punctured, you can dig it around the mouth with a knife and then brush it with waterproof paint to repair it.
Baidu encyclopedia-polyurethane waterproof coating
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