Bona U340 is a polyester fibre board to be used as a stress relieving decoupling layer
below floor coverings such as parquet and other floor coverings. It can be used on
poor–quality surfaces, like cracked or weak subfloors, or before the installation of solid
parquet types on dry screeds or particle boards. The high compressive strength
renders it capable of tolerating high loads (up to 5.0 kN/m²). It is suitable for use in
domestic and commercial premises. Additionally, the impact sound becomes reduced.
It is unaffected by damp and fungal decay. Due to its low heat transmission coefficient
Bona U340 may even be installed on warm–water floor heating.
• Stress relieving
• Water and rot proof
• Suitable as height adjustment
• Bridges cracks /breaks in the subfloor
• Reduces sound transmission
• Easy to handle
• Very low emissions – EMICODE EC1 Plus
• Traffic load up to 5 kN/m²