4MM ULTRASTRONG GOLD UNDERLAY 17mt Roll

17m x 1m x 4mm Metallic foil faced underlay (30kg) that reduces impact noise by up to 21 decibels. This underlay is also a vapour barrier.

• Integral gold foil vapour control layer to help protect against moisture - up to 3% MC
• 22 Micron (approx.) PETM foil layer - 200mm joint overlap
• Excellent impact sound insulation - 21dB
• Absorbs minor floor imperfections
• Non-dusting, non-toxic & odourless
• Simple, quick & easy to install
• Lightweight and easy to handle
• CFC & HCFC free
• 100% recyclable
• Thermal Resistance (R-Value) - 0.12 m²/K/W
• Tog Value - 1.2
• We do not recommend underlays thicker than 3mm for Drop Lock Systems