Radon Barrier Protection Strategy - Necoflex

General Design Considerations

The Necoflex RAM™ System offers robust detailing solutions for a wide range of ground floor and foundation designs. It facilitates a hybrid approach which combines Easi-Load™ Radon DPC with any one of Necoflex’s radon barrier membrane specifications (see radon barrier membrane selector). Building designers can select the best combination for their project, taking into account the following variables: 

  • Probability of having elevated indoor radon levels.
  • Building use and occupancy rate.
  • Number of storeys.
  • Floor area and risk of membrane damage when large sections are installed in a single phase.
  • Type of floor construction and quality of substrate finish.
  • Level of supervision and technical control on site.
  • Types of activities being carried out, e.g. placement of steel.
  • Levels of activity on membrane after it has been fitted and before insulation or other protective layer is placed.

Traditional methods of using a radon barrier membrane as a DPC may be acceptable, depending on barrier membrane type. Necoflex technical support team should be contacted for project specific design guidance.

Guidance on the design of radon barrier systems for new and existing buildings is given in the DoEHLG document Radon in Buildings, 1995. It is essential that the Necoflex radon barrier membranes are laid in accordance with the recommendations of IS 325 - 2:1995 Code of practice for use of masonry, BS 8102:1990 Code of practice for protection of buildings against water from the ground, and with NSAI Agrement Certificate 09/0328. 

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Sealing walls & design cavities.

Sealing floor areas.

Sealing services & structural penetrations.

Selection of Necoflex’s radon barrier membrane.

Other design considerations. 

Construction Detailing.

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