The Oldroyd membranes described in the brochure can be used in both newbuild and refurbishment projects. On refurbishment projects, the membranes are typically laid on top of damp and contaminated floors to provide protection for subsequent flooring layers. On newbuild projects the membranes can be used to allow fast-track installation of moisture-sensitive flooring finishes which could not otherwise be laid…

The level of protection required is shown on the maps that accompany BR211. Plots located in light grey areas require basic radon protection and plots located in dark grey areas require full radon protection. However it is sometimes possible to adopt a lower level of radon protection than that indicated by the map if a BR211 radon report for the…

Radon is a heavy, radioactive gas that is produced as a decay product of Uranium238, a metal that occurs naturally in certain types of soil and rock. Normally levels of radon in the air are not high enough to cause a significant risk to human health. However high levels of radon can build up when houses and other buildings are…

In some cases, the basement tanking system will provide adequate protection against the radon ingress. However, where a radon measurement reveals levels of radon above the recommended action level, remedial measures will usually be required. The BRE identify six main methods of reducing the amount of radon entering a house with a cellar or basement.

Floors can also be susceptible to moisture ingress, especially concrete floors