MAPEI HM Primer is a ready-to-use, low-VOC, water-based, quick-drying, high-tack membrane primer. It is specifically formulated to promote maximum adhesion of MAPEI peel-and-stick sheet membranes to high-moisture substrates.

• Fully compatible with MAPEI's peel-and-stick sheet membranes
• Ready to use; no mixing or dilution required
• Easy to apply with roller or brush
• Fast-drying, allowing sheet membrane installation after about 20 minutes
• Bonds to a wide variety of substrates, including nonporous concrete and metal
• Low in odor
• Water-based and nonflammable
• For interior and exterior applications
• Aggressive tack, improving the adhesion of peel-and-stick membranes to many substrates