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Radbar Gas Resistant DPC - 112.5mm x 20m

£9.20 Ex VAT
£11.04 Inc VAT

Radbar high performance radon damp proof course provides outstanding resistance to radon gas and water vapour.

Radon DPC – 112.5mm width  

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.

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. Therefore, 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 a damp proof membrane or gas membrane. It’s vitally important you have an air-tight seal between membrane and DPC 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 DPC is an engineered tri-polymer, developed to give excellent mechanical properties. It provides a highly 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 help make sure you have 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 Damp Proof Courses or return to the Gas Membrane 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