CASTECHCOAT WB
Thixotropic Cold-Applied Bitumen Emulsion Primer and Sealer
CASTECH Coat WB is a thixotropic bitumen emulsion designed for application as a primer and sealer coat. The coating is dark brown and dries to a black, flexible protective film.
Overview
About
CASTECH Coat WB is a thixotropic bitumen emulsion designed for application as a primer and sealer coat. The coating is dark brown and dries to a black, flexible protective film. The finished film is tough and forms a barrier to water and vapour transmission.
Typical uses
- General waterproofing, damp-proofing and protective coating for below-ground concrete against ground salts
- Protective coating for built-up roofing systems and other exposed surfaces
- Damp-proofing membrane or vapour seal
Standards
CASTECH Coat WB conforms to the requirements of ASTM D1227 Type III, Class 1.
Benefits
Advantages
Key advantages
- Cold applied, easy to apply
- Quick drying
- Non-flammable
- Can be applied over damp surfaces
- Excellent adhesion to concrete, metal and wood
Technical data
| Colour | Dark brown |
|---|---|
| Specific Gravity @ 25°C (ASTM D2939) | 1.0 (± 0.02) |
| Solid Content (ASTM D2939) | 32 (± 2)% |
| Firm Set @ 25°C | 24 hours |
| Flash Point | Non-flammable |
| Service Temperature | 5 – 75°C |
Typical values. Refer to the TDS for full details and test conditions.
Application
Surface preparation
Ensure the surface is sound and free from oil, grease and other foreign matter. Repair cracks, potholes and honeycombs with a suitable CASTECH repair mortar. A primer is always recommended before coating, as it seals porous substrates and promotes adhesion of further coats. Prepare the primer on site by diluting CASTECH Coat WB with 10 – 15% water and apply by brush, roller or spray. Allow the primer to dry before further coats. If the primed surface is left for more than 24 hours after drying, clean off settled dust and re-prime.
Coverage
Depending on the dry film thickness required, apply CASTECH Coat WB at 4 – 5 m²/L/coat.
Packaging & storage
Packaging
200 L drums, 20 L and 15 L pails.
Storage & shelf life
Store in a covered area under normal warehouse conditions, away from direct sunlight and protected from extreme temperatures. Keep containers tightly closed. Shelf life is 12 months from the date of manufacture.
Health & safety
Non-hazardous and non-flammable emulsion. PPE: Always wear gloves, safety shoes and safety goggles while using and handling this product. Precautions: Avoid contact with skin and eyes. In case of contact with eyes, wash with plenty of water and seek medical attention immediately. Additional information: Refer to MSDS (available on request).