SikaBond-T21 is a one-component, low-VOC and permanently elastic polyurethane compound. It produces a moisturecured, super strong and very low permeability adhesive, vapour retarding and sound reduction membrane.

• Single material capable of operating as a wood floor adhesive, vapour retarding membrane and sound reduction layer
• Extremely easy to trowel, low odour and excellent green grab
• Contains no water; will not cause swelling of wood flooring
• Tenacious bond and 270 % elongation
• Suitable for common types of wood flooring
• Especially good for problematic woods such as beech and bamboo
• Bonds solid wood flooring up to 19 mm (3/4 in) thick and 20 cm (8 in) wide, and engineered planks up to 35.6 cm (14 in) wide directly to concrete with no length limitations
• Eliminates sleepers and plywood over concrete and gypsum substrates
• Permanently elastic – allows planks to expand and contract without damage to the adhesive
• Compatible with in-floor, radiant heating