About Surface preparation
Merkrete 626 Primer is a 2-part primer (latex and powder) that when mixed together forms a slurry coat ideal for increasing adhesion to all concrete, mortar beds and wood sub floors. 626 Primer has excellent adhesion to existing asphalt cutback adhesives and other hard to bond surfaces. 626 cures quickly 2-3 hours at 70°F, 50% RH.
Merkrete Prep Seal
Prep Seal is an intercoat primer designed to increase adhesion between coats (layers) of Mer-Ko Weather Deck System, BFB Membrane and other Mer-Ko and Merkrete Systems. Prep Sealer is water based thin mil sealer that dries in 30-45 minutes at 70°F, 50% RH.