Visqueen Radon R400 is a high-performance radon gas membrane designed to protect buildings from harmful radon emissions. Manufactured from multi-layer polyethylene with an integral reinforcing grid, this radon membrane offers excellent puncture resistance and durability, making it suitable for use beneath ground floor slabs in residential, commercial, and industrial projects.
Certified to BBA Certificate 94/3009 and compliant with BS EN 13967, Visqueen R400 can be used as a stand-alone radon barrier membrane or combined with a damp proof membrane where both gas and moisture protection are required. It is particularly effective in areas identified as radon-affected in accordance with BRE Report BR 211.
Key Features:
-
Provides reliable protection against radon gas, helping meet UK Building Regulation requirements in high-risk areas
-
Reinforced with a durable grid to resist punctures, tearing, and damage during installation
-
Independently certified by the BBA and compliant with BS EN 13967 for use as a radon and damp proof membrane
-
Suitable for new builds, extensions, and retrofit applications
-
Compatible with Visqueen tapes, top hats, and accessories to form a fully sealed radon membrane system
Typical Applications:
-
Below ground-bearing concrete slabs
-
As part of a combined radon and DPM system
-
Detailing around service entries and junctions using appropriate accessories
Roll Size: 4m x 20m (80m² coverage per roll)
Material: Thermoplastic Membrane
Thickness: 0.4mm (1600 gauge)
Installation Guidance: Follow Visqueen’s official installation instructions and local building control requirements for gas membranes.
Visqueen
Building Materials
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online.
The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days. Please get in touch before you order if you need a specifc delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page.
Some orders are delivered on our own vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
Downloadable information can be found here:
Visqueen Radon R400 is a high-performance radon gas membrane designed to protect buildings from harmful radon emissions. Manufactured from multi-layer polyethylene with an integral reinforcing grid, this radon membrane offers excellent puncture resistance and durability, making it suitable for use beneath ground floor slabs in residential, commercial, and industrial projects.
Certified to BBA Certificate 94/3009 and compliant with BS EN 13967, Visqueen R400 can be used as a stand-alone radon barrier membrane or combined with a damp proof membrane where both gas and moisture protection are required. It is particularly effective in areas identified as radon-affected in accordance with BRE Report BR 211.
Key Features:
-
Provides reliable protection against radon gas, helping meet UK Building Regulation requirements in high-risk areas
-
Reinforced with a durable grid to resist punctures, tearing, and damage during installation
-
Independently certified by the BBA and compliant with BS EN 13967 for use as a radon and damp proof membrane
-
Suitable for new builds, extensions, and retrofit applications
-
Compatible with Visqueen tapes, top hats, and accessories to form a fully sealed radon membrane system
Typical Applications:
-
Below ground-bearing concrete slabs
-
As part of a combined radon and DPM system
-
Detailing around service entries and junctions using appropriate accessories
Roll Size: 4m x 20m (80m² coverage per roll)
Material: Thermoplastic Membrane
Thickness: 0.4mm (1600 gauge)
Installation Guidance: Follow Visqueen’s official installation instructions and local building control requirements for gas membranes.
Visqueen
Building Materials
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online. The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days.
Please get in touch before you order if you need a specific delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page. Some orders are delivered on our vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations, we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
Downloadable information can be found here:
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Visqueen
Visqueen Radon Barrier Membrane R400 4x20m
£136.00
Unit price
/
Unavailable
Visqueen Radon R400 is a high-performance radon gas membrane designed to protect buildings from harmful radon emissions. Manufactured from multi-layer polyethylene with an integral reinforcing grid, this radon membrane offers excellent puncture resistance and durability, making it suitable for use beneath ground floor slabs in residential, commercial, and industrial projects.
Certified to BBA Certificate 94/3009 and compliant with BS EN 13967, Visqueen R400 can be used as a stand-alone radon barrier membrane or combined with a damp proof membrane where both gas and moisture protection are required. It is particularly effective in areas identified as radon-affected in accordance with BRE Report BR 211.
Key Features:
-
Provides reliable protection against radon gas, helping meet UK Building Regulation requirements in high-risk areas
-
Reinforced with a durable grid to resist punctures, tearing, and damage during installation
-
Independently certified by the BBA and compliant with BS EN 13967 for use as a radon and damp proof membrane
-
Suitable for new builds, extensions, and retrofit applications
-
Compatible with Visqueen tapes, top hats, and accessories to form a fully sealed radon membrane system
Typical Applications:
-
Below ground-bearing concrete slabs
-
As part of a combined radon and DPM system
-
Detailing around service entries and junctions using appropriate accessories
Roll Size: 4m x 20m (80m² coverage per roll)
Material: Thermoplastic Membrane
Thickness: 0.4mm (1600 gauge)
Installation Guidance: Follow Visqueen’s official installation instructions and local building control requirements for gas membranes.
