Asmaco ASMACO PU 850 PRIMER Solvent-Based Paint White 1K Polyurethane Primer, 25

More waterproofing failures are adhesion failures than material failures — a membrane not keyed to the substrate lifts and blisters, and the leak appears nowhere near the defect. Concrete is porous and dusty; metal is smooth. A primer solves both, sealing pores and giving smooth surfaces something to grip. ASMACO PU 850 PRIMER — 1K Polyurethane Primer ASMACO PU 850 Primer is a moisture-curing, solvent-based polyurethane primer for adhesion on concrete, metal and cementitious screed, formulated to enhance bonding of ASMACO WP 810, WP 900 and WP 936. Specification as published by the manufacturer: • Packaging: 25 kg Pail • Coverage: 6 m2 per coat; a second coat may be required to achieve the result • Colour: Off White • Film build: 40-80 microns • Coats: 1-2 coats based on requirement Where it is used: Priming concrete, metal and cementitious screed before ASMACO polyurethane membranes; Indoor and outdoor applications; Applied by roller, brush or airless spray.