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Delivery from £48 - Calculated during checkout based on your address and quantity.Also available for Free Click & Collect from York, YO61*
£29.62 Inc VAT
Delivery from £48 - Calculated during checkout based on your address and quantity.Also available for Free Click & Collect from York, YO61*
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Powerlon UltraPerm Standard Vapour Permeable Roofing Felt is a high-performance breathable roofing underlay designed for use across a wide range of pitched roof constructions and timber frame walls.
Manufactured from a non-woven composite membrane, UltraPerm Standard combines exceptional water vapour permeability with hydrophobic, water-repellent characteristics and good UV stability. This allows moisture vapour from within the roof or wall construction to escape while helping protect the building envelope against external moisture.
Powerlon UltraPerm Standard is suitable for warm and cold roofs, supported and unsupported applications, and ventilated or unventilated roof constructions, making it a versatile roofing felt for new-build and refurbishment projects.
The membrane is BBA certified for roofs and walls, CE marked and tested to BS 5534:2014+A1:2015. Supplied in a compact 1m x 25m roll, each roll provides up to 25m² of coverage.
Powerlon UltraPerm Standard is designed for use as a vapour-permeable roofing underlay and timber frame wall membrane.
Suitable applications include:
The 25m roll length provides a particularly practical option for smaller roof areas where a full 50m roll may not be required.
Powerlon UltraPerm Standard provides exceptional water vapour permeability, allowing moisture vapour from within the building construction to pass through the membrane.
This helps manage moisture within insulated roof and timber frame constructions by allowing water vapour to escape rather than becoming trapped within the building envelope.
Its breathable properties make UltraPerm Standard suitable for modern roof constructions where effective moisture management forms an important part of the overall roof design.
Powerlon UltraPerm Standard can be used across a variety of pitched roof constructions, including:
This flexibility makes UltraPerm Standard suitable for roofing contractors, builders and developers working across different roof designs and specifications.
Powerlon UltraPerm Standard is manufactured from a tough non-woven composite material designed to provide strength and durability during installation.
Its tear-resistant construction helps the membrane withstand the handling and installation demands associated with professional roofing and timber frame projects.
At 115gsm, UltraPerm Standard provides a lightweight and practical membrane that is straightforward to handle while still offering the durability required for roofing applications.
In addition to its high vapour permeability, Powerlon UltraPerm Standard provides hydrophobic, water-repellent characteristics.
This combination allows moisture vapour from within the roof construction to escape while helping resist external water.
The membrane therefore combines breathability with weather protection as part of a correctly designed and installed roof or wall system.
Powerlon UltraPerm Standard also offers good UV stability, providing additional resistance during normal installation and construction periods before the permanent roof or wall covering is completed.
The membrane has a grey finish, providing a practical appearance for professional roofing and building envelope applications.
Powerlon UltraPerm Standard is BBA certified for roof and wall applications, providing independent certification for its intended use within suitable building constructions.
The membrane is also CE marked and has been tested to BS 5534:2014+A1:2015, making it suitable for professionally specified pitched roofing applications.
Powerlon UltraPerm Standard has a Class E reaction to fire classification.
Combined with its vapour permeability, water-repellent characteristics, durability and versatility, UltraPerm Standard provides a practical high-performance underlay for a broad range of roof and timber frame wall applications.
| Specification | Details |
|---|---|
| Product | Powerlon UltraPerm Standard |
| Product Type | Vapour Permeable Roofing Felt / Breather Membrane |
| Roll Width | 1m |
| Roll Length | 25m |
| Roll Coverage | 25m² |
| Weight | 115gsm |
| Colour | Grey |
| Material | Non-Woven Composite Membrane |
| Vapour Permeability | Vapour Permeable |
| Water Resistance | Hydrophobic / Water Repellent |
| UV Stability | Good |
| Reaction to Fire | Class E |
| BBA Certified | Yes, for Roofs and Walls |
| CE Marked | Yes |
| BS 5534 Tested | BS 5534:2014+A1:2015 |
| Roof Types | Warm and Cold Roofs |
| Installation | Supported or Unsupported |
| Ventilation | Ventilated or Unventilated Roofs |
| Wall Application | Timber Frame Structures |
Powerlon UltraPerm Standard Vapour Permeable Roofing Felt provides a versatile roofing underlay for projects requiring effective breathability, water repellency and durability.
Its 115gsm non-woven composite construction provides exceptional water vapour transmission while remaining hydrophobic, tear resistant and suitable for a broad range of roof configurations.
Powerlon UltraPerm Standard can be installed on warm or cold, supported or unsupported, ventilated or unventilated roofs, as well as within suitable timber frame wall constructions.
With BBA certification for roofs and walls, CE marking, BS 5534 testing and Class E performance, it provides a dependable vapour-permeable membrane for professional new-build and refurbishment projects.
This compact 1m x 25m roll provides up to 25m² of coverage, making it particularly suitable for smaller roofs, extensions, renovation work and projects where a larger roll is not required.
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Our customer service is rated as excellent on Trustpilot where we have over 1500 genuine customer reviews.
