Full definition
Adhesive specifically formulated for permanently bonding rubber, PVC, or linoleum floor coverings to prepared concrete or cementitious substrates. Types: (1) Water-based acrylic dispersion — standard for most rubber and PVC flooring; low odor, low VOC, easy cleanup; open time 15-30 min; full bond 24-48h; not suitable for wet areas or below-grade moisture. (2) Solvent-based contact cement — stronger initial grab, moisture-resistant; higher VOC (ventilation required); for heavy-traffic industrial rubber. (3) Polyurethane (PU) — structural bond, moisture-resistant (suitable for wet areas and below-grade), flexible; highest performance and cost. (4) Epoxy — maximum chemical resistance and structural strength for extreme environments (chemical plants, heavy forklift traffic); rigid, requires careful surface prep. Application: V-notch trowel at 2-3 mm bead, spread rate per manufacturer (typically 3-5 m²/liter). Substrate requirements: dry (<4% moisture per ASTM F1869), flat (3 mm per 3 m), clean, and mechanically profiled (shot-blast or grind). Temperature: >15°C ambient and substrate during installation. Per manufacturer installation guidelines and ASTM F710 (concrete floor preparation). Brands: Bostik (Roxset for rubber), Mapei, Uzin, Ardex, Sika.