Hir CS 5013
It is one of the base coat to be appliHir CS-5013 is formulated to repair areas that are hollow prior to waterproofing the surfaces. Due to its flexible nature, it is recommended for filling gaps up to 3mm.ed prior to the Hir Waterproofing chemicals. Hir BK S-5002 is acrylic polymer based-high bonding primer. It adheres to the surface and provides better bonding between the substrates, in addition to bonding it smoothen the surface to easy application of top coats.