Product Data Sheet Safety Data Sheet Show all documents

Cromar® Bitumen Primer

Bitumen primer for metals and porous substrates

A low viscosity, 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 can be applied to a range of surfaces such as concrete, asbestos cement sheeting, metals - including mild steel, zinc, and lead - slate and lightweight concrete screeds.  

  • For use on metal, concrete, asbestos cement, slate, lightweight concrete screeds, roofing felt & asphalt.
  • Can be applied by brush or spray.
  • Can be applied to damp (not wet) surfaces.
  • One coat application.
Seek a Stockist Contact Us
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Designed to prime and seal porous roof surfaces prior to the application of bituminous materials.

Advantages

  • For use on metal, concrete, asbestos cement, slate, lightweight concrete screeds, roofing felt & asphalt.
  • Can be applied by brush or spray.
  • Can be applied to damp (not wet) surfaces.
  • One coat application.

Packaging

1, 2.5, 5 and 25 Litre plastic pails

Colour

Black

Product Details

Product Information

Shelf Life

18 months

Storage Conditions

Containers must be kept sealed and stored away from sources of heat and ignition. In dry conditions between +5 °C and +25 °C.

Application

Consumption

Consumption

The consumption per litre is dependent upon the porosity of the surface:

Metal: 6 - 12 m²/L

Concrete: 6 - 8 m²/L

Lightweight concrete screeds and asbestos cement: 3.5 - 5 m²/L
Application steps

SUBSTRATE PREPARATION

Care needs to be taken over preparation of surfaces before application. All surfaces must be free from oil, dirt, dust and loose debris. On metal surfaces all loose rust should be removed using a wire brush and, where advanced signs of corrosion are evident, the area should be treated with a rust inhibitor.

Surfaces should be dry for best results, although Bitumen Primer will adhere to damp, but not wet, surfaces. Bitumen Primer is resistant to rainfall within 60 minutes of application.

APPLICATION

  • Bitumen Primer should be applied by brush ensuring an even coat with no pooling, or applied evenly by airless spray.
  • Minor spillages should be wiped off surfaces immediately and before the product has set.
  • Major spillages should be mopped up immediately with an inert, absorbent material, such as sand, and disposed of in accordance with regulations.
  • Do not use in temperatures less than +5 °C.
  • Drying - It is essential after priming concrete or screeded surfaces that the coating is free of solvent therefore a drying time of 2 hours should be allowed.
 

CLEANING OF TOOLS

Tools may be cleaned with white spirit. Minor spillages should be wiped off surfaces before the compound has set. Major spillages should be mopped up immediately with an inert, absorbent material, such as sand, and disposed of in accordance with regulations.

Documents