Radbar Radon DPC - 100mm x 20m

Radbar high performance radon DPC provides outstanding resistance to radon gas and water vapour.

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Availability: >In stock


RRP £9.70 Ex VAT
£7.40 Ex VAT £8.88 Inc VAT

Radon DPC – Gas Resistant Damp Proof Course

Radbar Radon DPC provides outstanding resistance to radon gas and water vapour. It is designed for use in both solid and cavity walls, acting as a highly effective barrier from harmful ground gases. It is robust with high puncture and tear resistance.

Permagard provide this DPC as 100mm x 20 metre rolls with the aim to minimise waste.

Uses of Radon DPC

The Radbar Radon DPC can be used in walls as a horizontal, vertical or stepped gas resistant DPC. 

It is designed for both solid and cavity walls (when used with a cavity tray system) made from: 

  • Brick
  • Block
  • Stone
  • Concrete 

Installation of Radon DPC 

The radon DPC is installed in the same as a normal DPC. For external walls, the gas DPC should be placed 150mm above the ground floor. It should be applied to a fresh bed of mortar, without any protrusions. 

Make sure the gas-resistant DPC is linked to the floor DPM membranes or gas membrane. It’s vitally important that you have an air-tight seal between the DPC and the membrane so use Radbar double-sided gas tape. This damp proof course needs to installed in accordance to building regulations: BS 8215:1991, BS 8000, and BS 5628. 

Benefits of Radbar Radon DPC 

This high performance gas resistant DPC is an engineered tri-polymer, developed to give excellent mechanical properties. It provides an extremely effective barrier against both water and gases for the lifetime of the building.

The DPC benefits from a prominent key, which means you get superior mortar adhesion. This is essential when being used in three + storey applications. 

Radbar High Performance DPC is compliant with building regulations - BS EN 14909:2012 – and carries BBA Certification. This provides complete confidence in the product, knowing that it has been manufactured to the highest standard.

Permagard – Providing Solutions. Inspiring Confidence.

If you are looking for radon DPCs, gas barrier membranes or any other type of membrane, then Permagard can make sure you get the right product for the job. If you have any questions, you can call the technical team on 0117 982 3282. 


Browse all of our DPCs or return to the Gas Membranes category.


  • Outstanding water vapour resistance
  • Excellent resistance to radon gas
  • Very high puncture and tear resistance 
  • Superior mortar adhesion
  • BBA Certificate No. 15/5251
  • Suitable for welding
Model: Radbar High Performance Gas Barrier DPC - 100mm x 20m
Manufacturer: Capital Valley Plastics
Packaging: Single
Size: 100mm x 20m
Coverage: 100mm x 20m
BBA Certificate: BBA certificateCertification No: 15/5251
Approved by the British Board of Agreement
Country of Manufacture: United Kingdom

Need more information?

Speak to our technical experts.
0117 982 3282

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