Product detail
The Marley Vapour-Permeable Roof Underlay is a high-performance breathable membrane specifically designed for pitched roofs. This underlay is supplied in rolls of 1m x 50m with integrated tape for sealing laps, ensuring full compliance with BS 5534. Suitable for all UK wind zones (1-5), it offers additional means of ventilation to meet the requirements of BS 5250.
Features and benefits
- Vapour Permeable: Allows moisture to escape, reducing the risk of condensation.
- High Tensile and Tear Strength: Provides durability and longevity under various conditions.
- Clean and Easy to Handle: Lightweight and simple to install.
- UV Resistant: Maintains performance and integrity under exposure to sunlight.
- BBA Approved: Certified under Certificate No. 19/5678 for assured quality.
- Integrated Tape for Sealing Laps: Ensures secure and effective overlap sealing
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- Guidance Lines for Minimum Laps: Facilitates accurate and efficient installation.
- UK Manufactured: High-quality production standards.
Applications
The Marley Vapour-Permeable Roof Underlay is versatile and can be used in various roofing applications, including residential properties and extensions.
It is designed to integrate seamlessly with the full Marley roof system, providing optimal ventilation and moisture management.
Sustainability
The Marley Vapour-Permeable Roof Underlay is A+ rated in the BRE Green Guide and certified under the BES 6001 framework for responsible sourcing.
This product supports sustainable building practices and can contribute to achieving additional credits under BREEAM and the Home Quality Mark (HQM).
Accessories and related products
- Universal Non-Breathable Underlay: A complementary product for roofs requiring traditional ventilation methods.
- JB Red Battens: High-quality, fully graded roofing battens.
Product specifications
| Description | |
| Dimensions: | 50m long x 1m wide |
| Weight: | 170g/m² |
| Minimum Overlaps: |
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| Pitch: | >15°: Horizontal laps 150mm, Vertical laps 100mm |
Marley Roof System
Whatever you’re planning and considering for your next project, make sure to look at the Marley full roof system.
All the elements of a Marley Full Roof System have been specifically designed and tested to work together perfectly – meaning that all elements are coming from the same source, giving you complete peace of mind.