THIS AD IS FOR THE 1L SIZED TIN 

ROSE ROOFING Bitumen primer is a low viscocity, high penetration, cold applied bituminous solution designed to prime and seal porous roof surfaces prior to the application of bituminous materials.

Bitumen primer seals porous substrates and promotes the adhesion of bituminous waterproofing systems and sheet coverings. It may be applied to a range of surfaces including concrete, asbestos cement, metals - mild steel, zinc, lead, slate - lightweight concrete screeds

The Coverage of this product is dependent upon the porosity of the surface: