Bituthene® Primer WP-3300 is a water-based latex primer which is specifically formulated to bind dust and concrete efflorescence, thereby providing a suitable surface for Bituthene® membranes. Bituthene® Primer WP-3300 is used to prime all structural concrete and masonry or wood surfaces on which Bituthene® membranes will be applied.

It promotes a good initial adhesion and, more importantly, excellent permanent adhesion of Bituthene membranes. Architectural and Industrial Maintenance Regulations limit the VOC content in products classified as Architectural Coatings.