Verified by manufacturer 4 months ago
BM Trada
Certificate type
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 externally on buildings which are sited in harsh environments where it is recommended that membranes with Class W1 water penetration are used.
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 in locations which are typically high altitude, open to high winds and on westerly coastal sites in England, Ireland, Wales and Scotland, where a Class W1 water penetration resistance is recommended. Used on the cold side of the insulation.
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:
Color | Silver Reflective silver face with green product branding |
Finish | Reflective |
Material | Polypropylene Non-woven Polypropylene core. Aluminium Permeable high purity aluminium foil layer. |
Shape | Rectangle Supplied as a roll. |
Length | 100000 mm |
Width | 3000 mm |
Uniclass | |
CAWS | H42/115 Precast composite H42/115 Precast composite H51/110 Cladding H51/110 Cladding H42/110 Precast homogeneous H42/110 Precast homogeneous H41/110 GRP single-skin cladding H40/110 GRC cladding H20/155 Sheet cladding H20/10 Sheet cladding P10/320 Breather membrane P10/65 Breather membrane H21/130 Breather membrane H22/130 Breather membrane H30/350 Breather membrane H31/280 Breather membrane H92/785 Breather membrane H21/20 Breather membrane H22/20 Breather membrane H30/50 Breather membrane H31/55 Breather membrane |
Product range |
Standard | BS EN 13859-1, BS 5250, BS EN 15976, BS EN 8990, BS EN 12572, BS EN 13111; BS EN 13859-2. |
Performance characteristicsSee individual properties below or manufacturer's literature for further details. | Aged thermal resistance of 0.77 m²K/W.Incorporating printing and using typical 600 mm stud centres. |
Class (minimum) | W1.To BS EN 13111 - No leakage (aged). |
Material | Aluminium foil layer with non-woven polypropylene core. |
Form | Non-woven, spunbond.Five ply construction to include a microporous film between two layers of spunbond, with a permeable, high purity aluminium foil layer on the upper surface that is micro perforated and embossed lower surface |
Third-party certification | BM TRADA Certified. |
Weight (minimum) | 145 g/m².Per roll: 45.9 kg. |
Thickness (minimum) | 0.42 mm. |
Reflective face | Yes. |
EmissivityIndependently tested by a European notified laboratory | 0.02 (ε). Unaged to BS EN 15976. |
Emissivity (aged)Independently tested by a European notified laboratory | 0.03 (ε). aged to BS EN 15976 |
Flame spread (to BS 476-6 and BS 476-7) | Class 1. To BS 476-7 |
Tear strength | MD (along roll): 177 N; CD (across roll): 191 N. To EN 12310-1 with mods. |
Water vapour resistance | 0.47 MNs/g / 0.093 Sd(m). To BS EN ISO 12572. |
Thermal resistanceIndependently tested by National Physics Laboratories (NPL) in a typical UK house with timber frame wall cavity and verified by BM TRADA | 0.77 m²K/W. Aged - to BS EN ISO 8990 & BS EN 15976 (incorporates printing and to standard 600mm stud centres). |
Roll width | 3000 mm. |
Roll length | 100 m. |
Fire classification | Class E. Tested in accordance with BS EN 11925-2 |
Resistance to water penetration | To BS EN 13111, Pass Class W1. |
TensileStrength | MD (along roll): 245 N/50mm; CD (across roll): 135 N/50mm. To BS EN 12311-1 with mods. |
Contains Red List materials | No |
Country of product manufacture | United Kingdom |
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