RB-BP PRIMER COATING BASED ON BITUMEN
RB-BP is a non-fibrated, solvent based bitumen coating. It is dark brown in color and dries to a black flexible protective coating. The finished film is tough and waterproof and forms a barrier to water and vapor transmission.
- Protection to a variety of buried structures such as concrete foundations and retaining walls
- Insulation: provides a vapor barrier for cold storage rooms, etc
- Metal protection: provides protection for structural steelwork, pipes, etc
- General waterproofing and damp proofing of concrete, asbestos cement, roofing felt, slate tiles, wood, etc
Features and benefits :
- Cold applied
- Easy to apply
- Chemical resistance
How to use :
Ensure surface to be treated is sound and free of all oil, grease or conventional curing compounds. If the surface is dusty it should be primed with a coat of RB-BP diluted with an equal quantity of solvent No.2 and allowed to dry, before applying further coats of RB-BP. It can be applied to damp surfaces, although both coating and surface must be allowed to dry before the RB-BP will cure to form a waterproof film.
Concrete coated with RB-BP will prevent the absorption of saline solutions. On uncoated surfaces, salts in groundwater will penetrate and can cause reinforcement corrosion and concrete deterioration.
Agitate before use. As settlement can occur, the drum should be rolled before decanting material. Apply by brush, broom or squeegee. Apply one or two coats, depending on the degree of protection required. Apply subsequent coats at right angles to the first, allowing 12 to 24 hours between coats. Where being utilized to damp proof solid floors or where a screed is to be applied over RB-BP, apply a second coat at right angles and lightly grit to form a key. Allow at least 24 hours before application of concrete screed, ensuring this is greater than 50 mm in thickness.