SikaBond®-T21

All-in-one, polyurethane-based, wood flooring adhesive, moisture vapour and sound reduction membrane

SikaBond®-T21 is a one-component, low-VOC, permanently elastic, super strong, very low permeability, moisture-cured, vapour-retarding, crack-bridging polyurethane adhesive and sound reduction membrane, all-in-one, for full surface wood floor bonding.

  • 270 % Elongation
  • Extremely easy to trowel
  • Unlimited subfloor moisture vapour protection
  • No moisture testing required - a dry to touch substrate is the only requirement
  • Single material capable of operating as a wood floor adhesive, vapour retarding membrane and sound reduction layer
  • Excellent Green Grab
  • Suitable for most common types of wood flooring
  • Especially good for problematic woods such as beech and bamboo
  • Bonds solid wood flooring up to 19 mm (¾ in) thick and 200 mm (8 in) wide, and engineered planks up to 350 mm (14 in) wide directly to concrete without length limitations
  • Low odour
  • Suitable for in-floor radiant heat installation
  • Permanently elastic – allows planks to expand and contract without damage to the adhesive
  • Crack-bridging
  • Tenacious bond
  • Contains no water
  • Eliminates sleepers over concrete