Vapour permeable roofing membrane underlays
The vapour permeable roofing membrane underlay from Marley is a lightweight, durable solution designed to meet modern roofing standards.
This high-performing underlay provides excellent resistance to water penetration, enhances installation efficiency, and complies with all roofing regulations, including Zone 1-5 wind requirements.
Benefits of vapour permeable roofing membrane underlays
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Complies with Zones 1-5 wind uplift standards.
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Integrated tape system for secure sealing of laps.
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UV-resistant and durable.
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Lightweight and easy to handle.
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Provides clear guidance lines for minimum laps.
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Eliminates the need for fly battens, saving time and cost.
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Excellent water penetration resistance.
Key Features and Technical Details
Advanced zone compliance
This vapour permeable underlay is fully compliant with BS 5534 wind uplift standards across Zones 1-5, ensuring reliable performance even in challenging conditions. Its integrated tape system enhances wind resistance, securing laps efficiently without requiring additional battens.
Lightweight and easy handling
At 125g/m², this underlay is lightweight and manageable, making installation straightforward. Supplied in 1m-wide rolls, it offers superior handling compared to larger 1.5m rolls, particularly in windy environments.
Enhanced durability and UV resistance
Built to last, the Marley Vapour Permeable Underlay is UV-resistant and crafted from robust materials, ensuring it withstands exposure during installation and remains reliable over time.
Integrated tape system
The integrated tape system eliminates the need for fly battens, reducing installation costs and time. It allows precise sealing of laps, ensuring consistent performance while simplifying the roofing process.
Guidance for precise installation
Printed guidance lines provide a visual reference for achieving the correct lap width, ensuring compliance with British Standards. This feature ensures accuracy and uniformity during installation, enhancing the roof's overall integrity.
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.
Why choose Marley vapour permeable roofing membrane underlay?
The Marley Vapour Permeable Roofing Membrane Underlay offers a unique combination of durability, ease of use, and regulatory compliance.
Its lightweight design, integrated tape system, and clear guidance lines simplify installation while delivering exceptional performance.
By eliminating the need for additional components like fly battens, it reduces project costs and time, making it a trusted choice for roofing professionals.
Benefits of vapour permeable roofing membrane underlay in detail
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Complies with Zones 1-5 wind uplift standards: Meets BS 5534 requirements for secure and resilient roofing installations.
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Integrated tape system for secure sealing of laps: Reduces reliance on additional battens, enhancing efficiency and saving costs.
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UV-resistant and durable: Offers long-term reliability and protection against elements during installation.
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Lightweight and easy to handle: Supplied in 1m rolls for effortless handling, even in challenging environments.
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Provides clear guidance lines for minimum laps: Ensures precise and consistent installation in compliance with British Standards.
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Eliminates the need for fly battens, saving time and cost: Streamlines the process, reducing material and labour costs.
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Excellent water penetration resistance: Acts as a reliable secondary barrier, enhancing the roof's overall weatherproofing.