Keim Blockweiss Technical Data Sheet

KEIM Blockweiss is a white pigmented water-based stain blocker priming coat. KEIM Blockweiss is used to prime interior surfaces which have a staining/bleeding tendency. KEIM Blockweiss is preferably used to isolate and block the bleeding of marks and stains from water, oil, tar, soot, smoke or coloured pen. The substrate must be sound, dry and clean before application.