When it comes to gas protection in construction, industry standards are constantly evolving. The latest guidance from the NHBC Foundation, commonly referred to as NF94, is now pushing for a major shift—phasing out foil-based gas membranes in Type A membrane locations (above the structural floor slab).
This change is significant because it impacts compliance requirements for NHBC-registered sites, meaning contractors and developers must rethink their choice of gas membranes. The solution? Visqueen Gas Barrier NF-400—a fully NHBC NF94-compliant, non-foil gas membrane system designed to meet the latest industry regulations.
Why Are Foil Membranes Being Phased Out?
The industry has known for some time that aluminium foil, when in direct contact with fresh concrete, can corrode. Even with protective coatings, this corrosion can compromise the membrane’s durability, impacting long-term gas protection.
NHBC has responded by publishing NF94, highlighting these concerns and recommending non-foil alternatives for Type A membrane locations. While this guidance is not yet an official technical standard, it is expected to be fully integrated into NHBC compliance requirements later this year.
Introducing Visqueen Gas Barrier NF-400 – A Compliant Alternative
To meet these new requirements, Visqueen Gas Barrier NF-400 has been developed as a BDA-certified, non-foil gas membrane that delivers industry-leading protection against methane, carbon dioxide, and radon gas.
Key Benefits of Visqueen NF-400:
- Fully Compliant – Meets NHBC NF94 guidance for Type A locations.
- No Foil, No Corrosion – Eliminates the risk of aluminium degradation.
- BDA Certified – Independently tested and accredited for quality assurance.
- Transparent Design – Allows for easy verification of jointing and substrate quality.
- Dual Jointing Methods – Can be heat-welded or taped for flexibility.
- Multi-Functional – Provides gas protection while acting as a damp proof membrane.
What This Means for Contractors & Developers
If you’re working on an NHBC-registered site, switching to a non-foil membrane like Visqueen NF-400 is essential to stay compliant. Using outdated foil-based solutions could result in non-compliance issues, delays, and potential rework costs.
However, for non-NHBC projects, traditional Visqueen Gas Barrier remains a viable option, meaning contractors have flexibility based on project requirements.
Order Visqueen Gas Barrier NF-400 Today
As industry standards evolve, so should your materials. Visqueen NF-400 offers futureproof protection that meets the latest NHBC guidance, ensuring long-term durability and compliance.
At Grayson (GB), we stock Visqueen Gas Barrier NF-400 at competitive prices, ready for fast delivery. Get in touch today to discuss your project needs and ensure your gas protection system is up to standard – 03448 504050.
