A waterproof, low emissivity, highly reflective insulating breather membrane for use externally on buildings which are sited in very severe, exposed locations aligned to STA Advice Note 18.
Low emissivity insulating breather membrane for use on the cold side of insulation to enhance the thermal performance of external timber frame walls, Structural Insulated Panels (SIPs), Cross Laminated Timber (CLT) panels and steel frame construction, designed for use where it is recommended that membranes with Class W1 water penetration resistance are used for harsh environments.
Protect Thermo Extreme is a waterproof, low emissivity, highly reflective insulating breather membrane which enhances the thermal performance of timber frame walls, Structural Insulated Panels (SIPs), Cross Laminated Timber (CLT) panels and steel frame construction. Designed for use externally on buildings on coastal sites, particularly cliff or seafront locations aligned to STA Advice Note 18, where Class W1 water penetration resistance is recommended
Protect Thermo Extreme has been developed from the tried and tested Protect TF200 Thermo range and additionally utilises microporous film and microperforation technology.
Produced in the UK of five ply construction, Protect Thermo Extreme’s innovative design provides a highly reflective yet vapour permeable surface which protects the outer sheathing from moisture and ensures the water vapour passes into the external wall cavity. When installed with the foil facing into an unventilated airspace, this provides enhanced thermal performance by effectively blocking infra-red radiation, helping to deliver a low overall U-value of the wall.
Features and Benefits:
3.0 x 100 m
Aged thermal resistance of 0.77m2K/W, incorporating printing. Resistance to water penetration to BS EN 1928 with Mods Class W1. Emissivity of the surface (ε) aged to BS EN 15976 - 0.03.
BM Trada Certification
Installing breather membranes.
Unaged to BS EN 15976.
aged to BS EN 15976
Flame spread (to BS 476-6 and BS 476-7)
177 N (MD (along roll) to BS EN 12310-1 with mods). 191 N (CD (across roll) to BS EN 12310-1 with mods).
Tensile strength (to BS EN 12311-1)
245 N/50mm (MD (along roll) to BS EN 12311-1 with mods). 135 N/50mm (DC (across roll) to BS EN 12311-1 with mods).
Water vapour resistance
0.47 MNs/g (to BS EN ISO 12572). 0.093 Sd(m) (to BS EN ISO 12572).
aged to BS EN ISO 8990 (incorporates printing)
Contains Red List materials
Country of product manufacture
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