Easy-Trim Grafter Integrate 100 Breather Membrane - 1M X 20M
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Product Information
Full details
The Easy-Trim Grafter Integrate 100 Breather Membrane is designed for builders and roofing professionals seeking a fast, reliable solution for pitched roof underlay. Its key benefit lies in the pre-applied dual integrated tapes, which significantly speed up installation and ensure watertight lap sealing. A potential consideration is the 3-month UV stability limit, requiring timely completion of the roofing process.
All features
| Model Part Number | ET/GRAFT/INTE/120 |
|---|---|
| Brand | Truly PVC Limited |
Extended Product Information
FAQs
What is the primary advantage of the 'Integrate' feature?
The 'Integrate' feature refers to the dual integrated acrylic tapes. These tapes are pre-applied to the membrane, eliminating the need for separate double-sided tapes. This significantly speeds up the installation process and ensures a consistently sealed, watertight lap.
Is this membrane suitable for all types of pitched roofs?
Yes, it is suitable for warm, cold, and hybrid pitched roof applications and is BBA certified for compliance with relevant standards like BS5534.
What does '100gsm' refer to?
100gsm refers to the weight of the membrane per square meter (grams per square meter). This indicates a lightweight yet robust material suitable for roofing underlay applications.
How long does the UV protection last?
The membrane is UV stable for up to 3 months of exposure. It's important to complete the main roofing covering within this period to prevent degradation.
Does this membrane meet wind uplift regulations?
Yes, it is designed to support compliance with BS5534 wind uplift requirements, including Zones 1–5, when used with appropriate battened laps.
What is the W1 rating?
The W1 rating signifies the highest level of water resistance, meaning the membrane provides a high-performance secondary barrier against wind-driven rain.
How should I store the membrane rolls?
Store rolls in a cool, dry environment, protected from direct sunlight and extreme temperatures, to maintain their integrity.
Troubleshooting
Tapes are not adhering well.
Ensure the membrane surface is clean, dry, and free from dust or debris before pressing the tape. Apply firm, consistent pressure along the entire length of the tape. Temperature can affect adhesion; avoid application in extreme cold.
Membrane appears to be sagging or not taut.
Ensure the membrane is adequately supported by rafters or insulation and properly tensioned during installation. Correct battening will help maintain tension.
Water ingress noted at overlaps.
Verify that overlaps meet the minimum requirements (typically 150mm) and that the integrated tapes have been applied correctly and firmly pressed. Ensure the secondary seal from the 90mm tape is properly engaged.
Pros and Cons
Pros
- Significantly faster installation due to integrated tapes.
- Ensures consistent and reliable watertight lap seals.
- Complies with BS5534 wind uplift requirements for Zones 1-5.
- Lightweight yet strong and tear-resistant material.
- Excellent vapour permeability helps manage moisture.
Cons
- Limited to 3 months of UV exposure; requires timely roofing.
- Requires specific battened lap application for full wind uplift compliance.
- Primarily suited for pitched roof applications.
Setup, Compatibility & Care Instructions
Setup:
- Unroll the membrane and position it over the roof rafters or insulation, ensuring the printed side faces outwards.
- Align the membrane overlaps according to the roof pitch and wind zone requirements, typically with a minimum overlap of 150mm.
- Peel the backing from the integrated 45mm tape on the printed face and press firmly to adhere it to the underlying membrane.
- For subsequent layers, peel the backing from the 90mm reverse tape and align it precisely with the edge of the previous membrane layer, pressing firmly to create a seal.
- Secure the membrane with battens as per BS5534 guidelines, ensuring the battens provide adequate compression over the taped laps.
Compatibility:
- Suitable for use in warm, cold, and hybrid pitched roof applications.
- BBA certified for compliance with BS5534:2014 Annex A and BS5250 (Type LR underlay).
- Compatible with most common roofing materials and insulation types.
Care:
- Store rolls in a cool, dry place, away from direct sunlight and extreme temperatures.
- Protect the installed membrane from prolonged exposure to UV light; complete the subsequent roofing layers within the 3-month UV stability period.
- Avoid mechanical damage during installation and subsequent works.