Visqueen Low Permeability Gas Membrane 0.5mm x 4m x 12.5m

£186.00 £155.00
In stock
Product Description

Visqueen Low Permeability Gas Membrane 0.5mm protects buildings against radon, carbon dioxide, and low levels of methane gas. It is a robust co-polymer thermoplastic gas membrane that is yellow in colour for easy identification and supplied in 0.5mm thickness, 4m x 12.5m in a centre folded roll.

Size: 4m x 12.5m x 0.5mm / 500μm

We are happy to help with enquiries, stock availability or any technical help you require, however for security reasons we cannot take orders over the phone. So if you need to chat give us a call on 03301231761 or email us at [email protected].

What is Visqueen Low Permeability Gas Membrane 0.5mm? 

When installed in accordance with the relevant codes of practice, Visqueen Low Permeability Gas Membrane 0.5mm is a safe solution for buildings against gas. Visqueen is a brand of polyethylene plastic sheeting that is usually low-density polyethylene (LDPE).

The robust membrane is manufactured as a centre-folded product which prevents creases and cracks, and aids jointing and welding applications on site. 


Features and benefits of Visqueen Gas Membrane 0.5mm: 


  • BBA certified “ third party accreditation
  • Complies with NHBC Amber 1 “ suitable for low gas risk NHBC housing sites
  • Flexible “ easy to detail and install on-site
  • Supplied centre folded “ reduces the risk of cracks in screed and limits creases
  • Multifunctional “ also acts as a radon and damp proof membrane
  • Dual jointing methods “ lap joints can be taped or heat welded
  • Low permeability to carbon dioxide, radon, and low levels of methane

Applications for Visqueen Low Permeability Gas Membrane 0.5mm: 


  • Prevents the ingress of harmful levels of ground gases for housing applications where NHBC are the warranty provider and the site has been classifed as Amber 1.
  • Used above a precast suspended segmental ground foor system like a beam and block floor.
  • High performance radon membrane and/or damp proof membrane positioned within the ground foor construction either above or below the structural foor.
  • Not suitable for use where there is a risk of hydrostatic pressure.
Data Sheet (355.11 kB)
Data Sheet (356.81 kB)
Customer Questions
When would I need to use a gas membrane rather than a damp proof membrane?
Gas membranes are designed to stop the ingress of harmful gases such as carbon monoxide and radon into living spaces. Whether you need a gas membrane depends on the building’s conditions or contamination in the surrounding area.
What area does the Visqueen gas membrane cover?
Visqueen gas membranes are supplied in a folded roll and a size 4m x 12.5m, with a total coverage of 50m2.
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More Information
Supplier Part NumberRS058893
Size0.5mm x 4m x 12.5m
Thickness500mu / 2000 Gauge

Orders and Delivery

Free delivery if your order is over £300 ex VAT. Orders between £100 - £300 ex VAT will be subject to a delivery charge of £50 ex VAT. Please note, we are unable to accept orders less than £100 ex VAT

When ordering on line you can specify the date of delivery, however we would not be able to specify the time of delivery on that day.

• Please note that we have a number of large vehicles, including articulated vehicles that may be used for delivery. Please advise us in the comments on your order if access to the delivery address is limited.

• Due to insurance guidelines, delivery personnel are unable to enter private residences. Delivery will be as far as possible to the kerbside of the delivery address. The recipient of the products is responsible for any additional lifting once the delivery has been made. Please bear in mind that Insulation products can be bulky and / or heavy.

• The delivery driver will require a signature to confirm the goods have been received.

 † Unfortunately we, Insulation Express, cannot deliver to the Highlands & Islands of the UK. However we will be happy to deliver to a freight forwarding company on your behalf.


Returns and Refunds

In the unlikely event that you need to return an item, please contact our team on [email protected] within 14 days of accepting delivery of the item.

Restocking charges may apply. We will discuss this with you upon receipt of the cancellation request. Restocking charges will be applied where the products are no longer required AND NOT for goods returned because either defective or damaged.

We usually charge 30% of value (minimum £25.00).

Please note that we cannot accept returns on special orders. Special orders may consist of items sent via third party shipping companies or made to measure products. If you are unsure on whether or not your item is a special order, please contact us on [email protected] prior to placing the order.

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