Cement, cement-lime and lime plasters. Walls made of bricks and ceramic blocks, silicate and cellular concrete blocks and others, concrete substrates, mineral wool or Styrofoam layer in thermal insulation systems.
For bonding thermal insulation boards
Substrate should be clean, dry, stable and sound. New plaster work and concrete should be set and seasoned. Remove loose, cracked and brittle plasters and widen joints. Patch slightly chipped areas with ALPOL AZ 130 quick setting or ALPOL AZ 135 levelling mortar, apply ALPOL AT 310 plaster on larger surfaces. Remove contamination and peeling paint from sound plasterwork. Dedust the surfaces. Treat the loose substrate with ALPOL AG 700 and ALPOL AG 703 deep penetrating primer to reduce absorption, if necessary.
For embedding mesh
The thermal insulation surface should be clean, dry, stable and sound. Any gaps between boards should be filled with insulation material strips cut to size. Grind the Styrofoam surface with a metal grater or a hand sander. Spread thin layer of adhesive on the mineral wool board surface and allow time until it initially sets.