DELTA ^® -RADONSPERRE
Barrier against radon gas

System that acts as a barrier against radon infiltration from the ground.

The DELTA®-RADONSPERRE anti-radon system implemented horizontally on the smoothed concrete slab creates an effective barrier against radon rising from the soil.

A screed is then poured directly onto the waterproofing system.

At the same time, it will be necessary to ensure the possibility of evacuation of radon to the outside along the buried wall, for example by the implementation of a sheet with draining excrescences of the DELTA®-TERRAXX type which will also ensure vertical drainage of seepage water.

It is also possible to lay the DELTA®-RADONSPERRE system before pouring the concrete slab on a rigid support (concrete clean layer, rigid insulation) or on a bed of sand. Only laying on gravel is to be avoided to avoid damaging the membrane. It is however made possible by the prior installation of a specific geotextile.

DELTA ^® – RADONSPERRE

Advantages

Radon transmission: approx. 0.00000005m/s
Radon permeability: approx. 0.00000000002 m²/s
Rough film, increased friction and tear resistance compared to lightweight polyane solutions, especially when walked on
Complete system with dedicated accessories

Application of DELTA ^® – RADONSPERRE

Without the DELTA®-RADONSPERRE anti-radon barrier

With the DELTA®-RADONSPERRE anti-radon barrier

Technical data DELTA ^® – RADONSPERRE

Material	Black polyolefin radon gas protection membrane (rough surface, with grid pattern)
Weight	approx. 460 g/m²
Thickness	approx. 0.7 mm (under 20 kPa)
Radon transmission coefficient	P = approx. 50 . 10^-9 m/s
Radon permeability	k = approx. 20 . 10^-12 m²/s
Radon flux rate	approx. 0.0025 Bq/m²s
Resistance to water penetration	waterproof 4 m, 72 hours (EN 1931)
Sd value	approx. 100 m
Tensile strength (DIN 16726)	longitudinal: approx. 350 N/5 cm / transverse: approx. 250 N/5 cm
Service Temperature range	–40°C to +80°C
Application temperature	+5°C to +40°C
Roll size	25m x 4m (100m2)
Roll weight	46kg