Underlays, Membranes and Associated Accessories
A range of high performance underlays and membranes ideally suited for use with Decra Roofing Systems.
Using Decra underlays and membranes simplifies ordering and delivery and ensures a fully compatible and exceptionally durable roofing system.
Decra 300 High Performance Underlay
50m x 1m roll, Order Code: FRCA3
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Decra 300 is manufactured from a specially formulated polyethylene with a multifilament polypropylene reinforcement grid. This provides exceptional strength and durability, and Decra 300 High Performance Underlay can be confidently expected to last the life of the roofing structure.
Decra 300 High Performance Underlay is suitable for use on all tiled roofs where insulation is provided at ceiling level and the roof is ventilated in accordance with BS5250.
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- Designed to replace traditional BS 747 Type 1F bituminous based felts.
- Extremely durable; will not rot at gutter level.
- Lightweight and strong.
- Superior tear resistance.
- Comfortable to handle.
- Offers greater strength and higher performance than Decra TwoF underlay.
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Decra TwoF Economy Underlay
30m x 1m roll, Order Code: FRCA2
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Suitable for use on all tiled roofs where insulation is provided at ceiling level and the roof is ventilated in accordance with BS5250. Read more
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- Designed to replace traditional BS 747 Type 1F bituminous based felts.
- Extremely strong, will not tear around nails, comfortable to handle.
- Suitable for new build and refurbishment projects.
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For guidance on estimating your underlay requirements please click on the link below
Underlays & Membranes
Breather Membranes
Decra 700 High Performance Breather Membrane
50m x 1.5m roll, Order Code: FRCA4
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Manufactured from a specially formulated microporous film, laminated between two layers of non-woven polypropylene. This provides one of the highest permeability figures of any breather membrane.
Decra 700 High Performance Breather Membrane has a low ratio of calcium carbonate filler to polymer, which cements the structure of the material together. This ensures excellent dura-bility and resistance to UV degradation.
Designed for use on warm and cold roofs where the roof is constructed in accordance with BS5250, 2002, Control of Condensation in Buildings. Read more
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- Outstanding breathability.
- Unique microporous film specifically designed for roofing.
- UV stabilised.
- Maintains its performance at virtually all temperatures.
- Extremely durable, lightweight and strong.
- Large roll size reduces wastage and increases speed and efficiency of installation.
- Energy efficient.
- Entirely recyclable.
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For guidance on estimating your underlay requirements please click on the link below
Underlays & Membranes
Adhesive Tapes
Decra Single Sided Underlay Tape
20m long x 50mm wide single sided adhesive tape.
Order Code: FRTI1
- For use with Decra Underlays and Breather Membranes where penetrations occur through underlay (e.g. sealing around rooflights, pipes, etc.).
- Can also be used to seal excessive underlay laps.
Decra Double Side Underlay Tape
22.5m long x 10mm wide x 2mm thick double sided butyl adhesive tape.
Order Code: FRTI2
- For use with Decra Underlays and Breather Membranes where penetrations occur through underlay (e.g. sealing around rooflights, pipes, etc.).
- Can also be used to seal excessive underlay laps.