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Basement Waterproofing

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  1. Vapour Control Layer Standard
    Vapour Control Layer 125mu - 2.5m x 50m
    £43.60 Ex VAT
    £52.32 Inc VAT
  2. Radbar Radon Gas Barrier Membrane Green 1200 gauge - 4m x 25m
    Radbar Radon Membrane 1200 Gauge - 300mu - 4m x 25m
    £88.50 Ex VAT
    £106.20 Inc VAT
  3. Radbar Amber 1 Gas Barrier Membrane 4m x 12.5m Permagard
    Radbar Amber 1 Gas Barrier Membrane 4m x 12.5m
    £96.60 Ex VAT
    £115.92 Inc VAT
  4. Radbar Amber 2 Foil Gas Barrier Membrane 2m x 50m
    Radbar Amber 2 Foil Gas Barrier Membrane 2m x 50m
    £392.00 Ex VAT
    £470.40 Inc VAT
  5. Flexible Hydrocarbon Membrane | Permagard
    Radbar Flexible Hydrocarbon Membrane 1.3 x 20m
    £248.00 Ex VAT
    £297.60 Inc VAT
    Out of stock
  6. Remmers MB 2K Plus - Flexible Tanking Slurry
    Multi Tight MB 2K Plus - Flexible Tanking Slurry
    Rating:
    96%
    £145.00 Ex VAT
    £174.00 Inc VAT
  7. Radbar High Performance Gas Barrier DPC - 112.5mm x 20m
    Radbar Gas Resistant DPC - 112.5mm x 20m
    £8.30 Ex VAT
    £9.96 Inc VAT
  8. Radbar High Performance Gas Barrier DPC - 100mm x 20m
    Radbar Radon DPC - 100mm x 20m
    £7.40 Ex VAT
    £8.88 Inc VAT
  9. Radbar Single Sided Tape Grey (Radon)
    Radbar Single Sided Tape Grey (Radon) 75mm x 50m
    £12.10 Ex VAT
    £14.52 Inc VAT
  10. Radbar Single Sided Tape Foil (Vapour Barrier) - 75mm x 50m
    Radbar Single Sided Tape Foil (Vapour Barrier) - 75mm x 50m
    £12.10 Ex VAT
    £14.52 Inc VAT
  11. Radbar Double Sided Tape 50mm x 10m
    Radbar Double-Sided Tape 50mm x 10m
    £7.80 Ex VAT
    £9.36 Inc VAT
  12. PermaSEAL Double-Sided Jointing Tape 50mm x 10m
    PermaSEAL Double-Sided Jointing Tape 50mm x 10m
    £7.20 Ex VAT
    £8.64 Inc VAT
  13. Radbar Hydrocarbon Jointing Tape - Single-sided
    Radbar Hydrocarbon Jointing Tape - Single-sided 100mm x 20m
    £32.95 Ex VAT
    £39.54 Inc VAT
  14. Radbar Double-sided Hydrocarbon Jointing Tape
    Radbar Double-sided Hydrocarbon Jointing Tape - 100mm x 15m
    £19.95 Ex VAT
    £23.94 Inc VAT
  15. Radbar Radon Sump | Permagard
    Radbar Radon Sump
    £26.85 Ex VAT
    £32.22 Inc VAT
    Out of stock
  16. Periscope Vent
    Periscope Vent
    £7.10 Ex VAT
    £8.52 Inc VAT
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Learn more about Gas Membranes

Gas Resistant Membranes & DPCs 

Gas membranes provide a barrier against harmful ground gases like radon, methane and carbon dioxide. They also act as a damp proofing membrane, protecting properties from moisture ingress.

Permagard supplies gas membranes that are highly durable and puncture resistant, making them ideal for new flooring constructions. 

We stock the following gas membranes and radon damp proof courses:

We also stock Radon Sumps, Top Hats, and Preformed Corners.

Radon Protection

Radon is an invisible radioactive gas that is formed when the small amounts of uranium in rocks and soils decays. It is found everywhere, but at varying levels. Radon can cause health issues, including increasing the risk of cancer in some instances. Some areas of the UK have a greater chance of high radon levels and new build properties in these locations need protecting. 

Radon Barriers

In areas where radon gas is found at higher levels, it is important that radon barriers are used to prevent it from seeping into the building and harming the inhabitants. Radon barrier membranes and radon DPCs prevent gases from contaminated land like former landfill and industrial sites as well as naturally-occurring sources, entering a property. The radon barrier membrane can be laid either above or below the ground floor slab and the radon DPCs in either solid or cavity walls.  

Radon barriers effectively prevent ground gases from entering a property. As well as radon resistance, they also act as an effective barrier against methane and carbon dioxide gases. The radon barriers we supply satisfy all relevant Building Regulations.

How radon barriers work?

Radbar radon barriers are a passive control system. This means that they prevent the ingress of gases from the ground. It can become an active system when suitable ventilation fans are installed. The radon barrier membranes are designed to be installed in the construction of new concrete floors. 

Radon Barrier Installation

Radon gas membranes are designed to be installed by professionals in concrete ground floors, either above or below the slab. They are suited to the following applications:

• reinforced cast in-situ concrete floors 

• suspended beam-and-block concrete floors

• precast concrete slabs

The Radbar radon membrane should extend the whole of the floor and walls. Make sure that it is laid on a smooth surface or one that has been sand blinded to prevent any punctures. It is vitally important that all joints are sealed including under wall sealing. 

Radbar double-sided gas tape should be used to create a gas-tight seal. Ensure that the two gas membranes overlap by 150mm.

The 1200 gauge radon membranes are high quality and very robust with a high puncture resistance. This makes them suitable for construction. In normal circumstances these durable gas membranes will remain effective for the lifetime of the building.

Important note: Radon gas barriers are not suitable for floors that are subject to hydrostatic pressure 

Radon DPC Installation

The gas-resistant damp proof courses that we stock are designed for use in walls as a horizontal, vertical or stepped gas proof DPC. They are suitable for both solid and cavity walls (when used with a cavity tray system) that have been constructed out of brick, block, stone or concrete. 

Radon Barrier Manufacturers

Our radon barrier membranes are manufactured by Capital Valley Plastics. All membranes adhere to radon barrier building regulations andhave been independently tested to ensure their resistance to underground gases. 

Radon Barrier Costs

At Permagard, we’re committed to offering high quality products at low trade prices. We aim to keep radon barrier costs down by using trusted manufacturers like Capital Valley Plastics. 

Permagard - Gas membrane suppliers

Permagard are experts when it comes to all types of damp proofing, basement waterproofing and gas proof membranes. Our technical team are happy to help with any queries around radon barriers and their installation. Call us today on 0117 982 3282.  

You can read our Gas Membrane Installation guide for more advice.