Bituminous Primer

Composition: A liquid emulsion primarily made of bitumen. Some versions, like Insucoat RB, are rubberized for added flexibility. ​Application: It is cold-applied, meaning it does not require heating, and can be applied using a brush, roller, or airless spray. ​Functionality: When it dries, it forms a black, flexible protective film that acts as a tough barrier against water vapor transmission