Boost Thermal Insulation With a Strong Reflective Vapour BarrierDuPont AirGuard Reflective is a low emissivity internal vapour barrier that combined with an airgap can enhance thermal comfort by reflecting up to 95% of radiant heat back into the building.This strong 100% airtight vapour barrier is specially designed to give maximum thermal performance. Recommended for use with Tyvek Reflex products, AirGuard Reflective provides a good way to improve U-values in buildings. A highly vapour and water-resistant low emissivity internal vapour barrier, it considerably reduces interstitial condensation as well as improves thermal efficiency by reflecting up to 95% of radiant heat.Features & Benefits Water vapour transmission (sd) 2000m Considerably reduces risk of condensation into the insulation Reflective surface Considerably reduces convective heat losses Superior mechanical strength Durability BBA-Approved Independently certified, showing aged results