Professional-Grade App Primer (25l)

APP Primer (25L) is a professional-grade, solvent-based bituminous primer formulated for optimal adhesion on concrete, metal, masonry, and wood substrates. Ideal for use before the installation of APP torch-on membranes, it enhances surface bonding and seals porous surfaces, promoting superior waterproofing performance. The primer dries rapidly (within 1–2 hours under normal conditions) and penetrates deeply to stabilize dusty or absorbent surfaces. Coverage is approximately 5–8 m2 per liter, depending on surface porosity. Designed for heavy-duty roofing applications, it's resistant to moisture, alkaline conditions, and mild acids.