Powerlon Ultraperm Max is a top of the range breather membrane / roof underlay designed for use in pitched roofs and walls in timber frame structures. This 155gsm non-woven composite membrane delivers exceptional water vapour transmission and superior vapour permeability, making it ideal for both ventilated and unventilated roofs in warm and cold roof constructions.
With its hydrophobic and breathable properties, Ultraperm Max enhances insulation efficiency while protecting the building envelope. This roof underlay offers excellent tear resistance and tensile strength, ensuring long-term durability in even the most demanding pitched roof designs.
Powerlon Ultraperm Max is easy to handle and install, featuring pre-printed marking lines for accurate placement. It is BBA certified, making it a trusted choice for unsupported or supported roof and wall applications in timber frame structures.
Ideal for use as a breather membrane or roof membrane, Powerlon Ultraperm Max offers outstanding protection and performance in all conditions.
Key Features:
- Roofing membrane with High tensile and tear resistance
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UV-resistant for temporary exposure
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Water vapour permeable and hydrophobic
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Suitable for warm and cold roof construction
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For use in roof and wall applications, including unsupported and timber frame builds
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Certified: BBA certified for compliance and peace of mind
- Powerlon UltraPerm Premium 155gsm is a high-performance breather membrane for all pitched roof types.
- Can be used on warm and cold, supported and unsupported, ventilated and unventilated roofs.
- BBA certified for both roofs and walls (BS 5534 compliant). CE marking
- Available sizes 1.0m x 50m & 1.5m x 50m
| Product Type | Breather Membrane / Roof underlay |
| Brand | ITP Ltd |
| Sizes Available | 1.0m x 50m and 1.5m x 50m. |
| Weight | 155 GSM |
| Resistance To Water Penetration | W1 |
| Temperature Range | -40°C - +70°C |
| Colour | Green |
| Reaction To Fire | Class E |
| UV Resistance | 3 Months |
| Applications | For use on insulated walls and pitched roofs |
| Order value | Delivery Charges (EX.VAT) | ||
|---|---|---|---|
| Up to £493 |
£30.00 |
||
|
£493.01 - £740 |
£20 | ||
| Over £741 | £15 | ||
Returns/Refunds And Cancellations:
You can cancel your order and get a full refund anytime before we confirm your order via email.
Once shipped, orders cannot be cancelled. You can however retun the itms to us within 10 days after delivery. 25% restocking fee with will applicable. Buyer pays postage for returns
Customers are requested to check the item on recipt and inform us of any damage immediately, via call/email. Photo evidence is must
For more information on returns and deliveries, please refer to our delivery information page.
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