waterproofing bituminou primer for membrane

The Bituminous Base Primer is made from asphalt and solvent (also called thinner), and its mix ratio should be determined by the lab experiment of the factory. Before paving or laying the torch on asphalt or bitumen membrane for waterproofing or vapor barriers , the base layer should be coated with the Bituminous Primer to make the membrane strongly and firmly adhere to the base layer, which is also called the base layer treatment agent. Application Method The base layer must be dry and clean before painting or brushing the base primer. It is not appropriate to construct in rainy, foggy, and dew weather. During the construction, use a brush to brush the details around the nodes, corners, etc., the coating of base primer should be uniform, the recommended thickness is about 0.15 ~ 0.20 ㎜, there must be no missing coating, exposed bottom, and pitting. Spray the second layer after the first layer is dry. Main Performance After spraying or brushing the base primer, the asphalt molecules in the primer will penetrate into the capillary pores of the base layer with the solvent. After the solvent volatilizes, the remaining asphalt combines with each other to condense and form a strong coating film.