Klober Permo Air 160 Breather Membrane
The Klober Permo Air 160 Breather Membrane is a premium, high-performance breathable roofing underlay designed to deliver exceptional moisture control and long-term roof protection. Manufactured by Klober, this advanced membrane offers one of the highest levels of breathability on the UK market, making it the ideal solution for modern pitched roof construction.
Engineered for cold and warm roofs, Permo Air 160 allows air and water vapour to pass freely through the membrane while remaining fully weather-tight. This dramatically reduces condensation risk, protects roof timbers, and supports healthier roof structures — especially during the critical drying-out phase of new builds and refurbishments.
High Breathability for Superior Condensation Control
Klober Permo Air 160 is designed with an air-open, vapour-permeable structure, enabling moisture to escape efficiently from the roof space. Its exceptionally low vapour resistance helps prevent trapped condensation, mould growth, and timber decay, delivering long-term peace of mind for homeowners and contractors alike.
BBA Approved & NHBC Accepted
This BBA approved breathable membrane is fully compliant with UK building regulations and NHBC accepted, making it suitable for use on residential and commercial pitched roofs. Thanks to its high breathability performance, no additional roof ventilation is required when installed correctly — saving both time and installation costs.
Strong, Durable 3-Layer Construction
Manufactured using a robust 3-layer design, Permo Air 160 combines strength, flexibility, and durability. The membrane is hydrophobically treated for water resistance and offers UV stability for up to 4 months, providing reliable protection during extended construction periods.
Versatile & Easy to Install
Supplied in a 50 m x 1 m roll, this breathable roofing underlay is lightweight, easy to handle, and quick to install. It is suitable for:
- Cold pitched roofs
- Warm pitched roofs
- New build projects
- Roof refurbishments and extensions
Its installer-friendly format makes it a popular choice with professional roofers across the UK.
Key Benefits
- High breathability roofing membrane for effective moisture management
- BBA approved & NHBC accepted for regulatory compliance
- No additional ventilation required, reducing labour and material costs
- Low vapour resistance for faster roof drying
- Durable 3-layer construction for long-term performance
- UV stable up to 4 months during installation
- Suitable for cold and warm pitched roofs
Product Specifications
- Product Type: Breathable Roofing Membrane / Roof Underlay
- Roll Size: 50 m x 1 m (50 m² coverage)
- Construction: 3-Layer Membrane
- Application: Pitched roofs (cold & warm)
- Certification: BBA Approved, NHBC Accepted
Installation
- Permo Air 160 should be installed in line with the details set out in the BBA Certificate and in accordance with BS5534
- An unsupported underlay should provide a drape between rafters sufficient to ensure that water will run away from the batten fixing nail penetrations allowing drainage to the eaves gutter
- Contact between the membrane and the roof covering should be avoided during and after installation
- Should be laid with a maximum drape of 15mm
- An underlay support tray should be used at eaves to avoid ponding behind the fascia board and to provide a drip into the guttering
