Properly cured and seasoned cement, cement-lime and gypsum plaster, concrete substrates, cement, stone, terrazzo and anhydrite floors. Walls made of ceramic and silicate bricks and hollow clay blocks as well as of cellular concrete blocks. Old glazed, terracotta and porcelain tiles (indoors), as well as gypsum, cement fibre and gypsum fibre boards, adhering, sound and stable paint coats, stable OSB boards (with thickness ≥ 22 mm). Waterproofing layers of liquid polymer films (such as ALPOL AH 751) or polymer-cement-based sealing mortars (such as ALPOL AH 752, ALPOL AH 753, ALPOL AH 754).
Substrate should be clean, stable and sound. New plaster work and concrete 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. Treat the loose substrate with ALPOL AG 700 and ALPOL AG 703 deep penetrating primer to reduce absorption, if necessary. Remove impurities and coatings impairing adhesion from terrazzo and stone substrates and treat them with ALPOL AG 700 or ALPOL AG 702 primer. To provide a bonding coat, apply a thin layer of adhesive on old tiles, after degreasing and roughening their surface, or treat the surface with ALPOL AG 702 primer. Gypsum substrates, anhydrite floor and gypsum fibre boards should be primed twice with ALPOL AG 703 primer. Apply not thinned ALPOL AG 708 primer on OSB boards cleaned of substances impairing adhesion (e.g. by machine sanding).