Garla-Block is a water-based acrylic primer formulated to prevent staining and improve coating adhesion over a variety of roof systems (smooth/granulated asphalt, coal tar modified bitumen, and modified bitumen). This high-quality formula prevents the migration of aromatic oils from seeping out of the roof system and into the surface coating. Garla-Block can be installed with solvent-based urethanes, water-based acrylics, and aluminized asphaltic coatings.
