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£125.53 Inc VAT
Delivery from £48 - Calculated during checkout based on your address and quantity.Also available for Free Click & Collect from York, YO61*
£125.53 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 Max Breather Membrane Roof Felt is a high-performance, vapour-permeable roofing underlay suitable for a wide range of pitched roof and timber frame wall applications.
Manufactured from a tough non-woven composite membrane, UltraPerm Max combines exceptional water vapour permeability with hydrophobic, water-repellent characteristics and good UV stability. It allows moisture vapour to escape from the roof or wall construction while helping protect the building envelope against external moisture.
Powerlon UltraPerm Max is suitable for warm and cold roofs, supported and unsupported applications, and ventilated or unventilated roof constructions, making it a versatile breather membrane 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 1.5m x 50m roll, each roll provides up to 75m² of coverage.
Powerlon UltraPerm Max is designed for use as a breathable roofing underlay and timber frame wall membrane.
Suitable applications include:
Its versatile construction allows a single membrane to be used across a broad range of roofing and wall applications.
Powerlon UltraPerm Max provides exceptional water vapour permeability, allowing moisture vapour from within the building construction to pass through the membrane.
This is particularly important within insulated roof and timber frame constructions, where effective moisture management can help reduce the risk of condensation and unwanted moisture accumulation.
The breathable construction allows moisture vapour to escape while the hydrophobic outer characteristics help protect the roof or wall construction from external water.
One of the key advantages of Powerlon UltraPerm Max is its versatility across different roof constructions.
The membrane is suitable for:
This makes UltraPerm Max a practical choice for roofing contractors, builders and developers working across a variety of pitched roof designs.
Powerlon UltraPerm Max is manufactured using a non-woven composite construction designed to provide strength and durability during installation and throughout its service life.
The membrane is tough and tear resistant, helping it withstand the handling and installation demands associated with professional roofing and timber frame construction.
At 155gsm, UltraPerm Max provides a robust membrane while remaining practical to handle and install across large roof areas.
In addition to its high vapour permeability, Powerlon UltraPerm Max has hydrophobic, water-repellent characteristics.
This helps resist external water while allowing moisture vapour from within the roof or wall construction to escape.
The membrane also offers good UV stability, providing additional protection during normal installation and construction periods before the permanent external roof or wall covering is completed.
Powerlon UltraPerm Max 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 the requirements of BS 5534:2014+A1:2015, the British Standard covering slating and tiling for pitched roofs and vertical cladding.
These certifications make UltraPerm Max a suitable choice for professionally specified roofing and timber frame projects.
Powerlon UltraPerm Max has a Class E reaction to fire classification, adding to its performance characteristics as a professional roofing and wall membrane.
Combined with its breathable, water-repellent and durable construction, this makes UltraPerm Max a versatile solution for a wide range of building envelope applications.
| Specification | Details |
|---|---|
| Product | Powerlon UltraPerm Max |
| Product Type | Breather Membrane / Roofing Underlay |
| Roll Width | 1.5m |
| Roll Length | 50m |
| Roll Coverage | 75m² |
| Weight | 155gsm |
| Colour | Green |
| 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 Max Breather Membrane Roof Felt provides a versatile roofing underlay for projects requiring effective moisture management, durability and compatibility with a broad range of roof constructions.
Its 155gsm non-woven composite construction combines exceptional water vapour permeability with water-repellent properties, good UV stability and tear resistance. It can be used across warm and cold roofs, supported and unsupported applications, and ventilated or unventilated roof designs.
With BBA certification for roofs and walls, CE marking, BS 5534 testing and Class E performance, Powerlon UltraPerm Max provides a high-performance breather membrane for professional pitched roofing and timber frame applications.
Each 1.5m x 50m roll provides up to 75m² of coverage, making it suitable for both new-build and refurbishment roofing projects.
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Our customer service is rated as excellent on Trustpilot where we have over 1500 genuine customer reviews.
