Skim coat from 3 to 30 mm, or supplementary skim coat, on mixed substrates.
Structure type
External walls or partitions in rubble stone (or alternatively solid brick, clay brick or sand-cement blocks), with or without an existing irregular, discontinuous and/or uneven plaster based on hydraulic binders (lime and cement, hydraulic lime, natural hydraulic lime).
Detail
Interior or exterior leveling/smoothing skim coat from 3 mm to 30 mm thick, and finish.
Application cycle
- Interior or exterior plaster.
- Mixed stone wall (or alternatively solid brick, brick, sand-cement blocks, etc.).
- Existing hydraulic binder plaster left uneven and/or patchy after removing the old finish, old stone cladding, wallpaper, etc., or "flush-pointed" (raso sasso) plaster.
- Patching and leveling skim coat 3 to 30 mm thick over the existing plaster with RALLK Rasante K, to restore a flat surface, with primed glass fiber mesh of more than 150 g/m2 embedded in the outer part.
- Troweled interior or exterior finish with RALLK Marmo K, or finish with a finishing coat, powder mineral finish, acrylic, siloxane, lime or silicate paste finish, or lime, siloxane, acrylic or silicate paint, as set out in the specifications.
Additional information
- Check that the masonry is sound and clean, and free of dust, loose parts, demolition debris, soot, mold, salt efflorescence, other organic material, grease or anything else that could impair the bond of the skim coat to the substrate.
- Check that the existing plaster is cohesive and well bonded to the wall, and free of dust, salt efflorescence, mold, soot, other organic material, oil, grease or anything else that could impair the bond between the skim coat and the plaster.
- On cracked plaster, check the cause and stability of the cracks before applying the skim coat. For cracks wider than 2 mm, we recommend filling them first with RALLK Rasante K, applied with a spatula, 12 - 24 h before the leveling skim coat.
- See the individual product data sheets for application methods and precautions.
