Substrate type
Properly seasoned and prepared traditional building substrates (cement, and cement-lime plasters, concrete substrates, cement floors, walls made of ceramic and silicate bricks and hollow clay blocks as well as of cellular concrete blocks) and gypsum plasters, stone, terrazzo anhydride and asphalt floors, gypsum wall blocks, and also gypsum, cement fibre and gypsum fibre boards. Waterproofing layers of liquid polymer films (such as ALPOL AH 751) and polymer-cement-based sealing mortars (such as ALPOL AH 752, ALPOL AH 754).
Substrate preparation
Substrate should be clean, stable and sound. New plaster and concrete work should be set and seasoned. Old, loose, brittle and peeling material of poor adhesion should be removed. Chipped areas should be patched with ALPOL AZ 130 quick setting mortar or ALPOL AZ 135 levelling mortar. The substrate moisture for masonry and cement substrates should be < 4%, < 1% for gypsum substrates, < 0.5% for anhydrite substrates. Strengthen loose substrates with ALPOL AG 700 deep-penetrating primer.Ā To reduce surface absorption apply ALPOL AG 703 primer, if necessary. Remove impurities and coatings impairing adhesion from terrazzo and stone surfaces and treat them with ALPOL AG 700 and/or ALPOL AG 702 primer. Gypsum substrates, anhydrite floor and gypsum fibre boards should be primed twice with ALPOL AG 703 primer.