What is bitumen primer?

Bitumen primer for priming surfaces prior to the application of bituminous materials.

Bitumen D 41 can be used to seal and prime concrete, masonry and timber surfaces prior to the application of torch-on waterproofing membranes (where appropriate) and bitumen coatings. Bitumen primer D 41 is a cold applied, solvent based bituminous coating formulated with high quality hard oxidized bitumen compounds and selected hydrocarbon solvents for use as primer to self-adhesive and torch-on membranes on a variety of substrates.

Primer D 41 is mainly used as primer to self-adhesive membranes, torch-on membranes and bituminous waterproof coatings on concrete, block work, brickwork and other porous or absorbent surfaces.

Packing of bitumen primer D 41

5 litre, 25 litre tins

Uses of bitumen primer D41

Priming and sealing of concrete, masonry work, cementitious screeds and renders

Priming and sealing of existing bituminous waterproofing membranes

Priming and sealing of metal, timber, clay or cement bricks, and other porous and non-porous surfaces

Other Information

Do not apply if temperature is below 5°C

Not suitable for potable drinking water tanks

Bitumen compounds tend to bleed through and discolour paints subsequently applied over it. 

Standard of D41

ASTM D41, 2005 Edition, February 1, 2005 – Standard Specification for Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing

This specification covers asphaltic primer suitable for use with asphalt in roofing, dampproofing, and waterproofing below or above ground level, for application to concrete, masonry, metal, and asphalt surfaces.

The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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