With floor coatings against indoor radon
With special floor coatings against radon
Special floor coatings prevent the penetration of radon from the soil into buildings. As a result, the health-endangering radon concentration indoors remains within safe limits, even in regions with high natural radon occurrence. StoCretec offers floor systems whose radon-proof effect has been certified by the accredited Institute IAF Radioecology, Radeberg.
The coatings prevent radon diffusion through basement floors and walls and close the permeability and leakage of floor slabs by sealing without joints. Cracks and joints are dynamically bridged and thus sealed. This is confirmed by the certificates. The floor coatings thus offer different technical solutions for new buildings, as well as for extensions and renovations.
What is radon?
Radon is a natural noble gas that occurs everywhere in the environment. In some regions of Germany, the radon concentration even exceeds the reference value of the German Radiation Protection (300 Becquerel per cubic metre). It enters buildings through layers of rock from the ground and can accumulate there. Since radon is a heavy gas, its concentration increases especially in the air near the ground, e.g. in basements, but also in other indoor spaces. Inhalation of radon has already been proven in 1988 by the WHO Cancer Centre to be a serious cancer risk for humans. The Federal Office for Radiation Protection (BfS) also warns of the dangers of radon. Therefore, radon-proof floor coating systems are recommended, especially in regions with high exposure.
Radon-containing soil air can penetrate the building from the building ground and accumulate indoors. If you breathe in radon at an elevated level over a longer period of time, the risk of developing lung cancer increases.
How high is the radon concentration?
The radon concentration in the soil, in the air and in indoor spaces varies greatly from region to region. Therefore, so-called radon precautionary areas have been defined by the legislator. These are located in Baden-Württemberg, Bavaria, Lower Saxony, Saxony-Anhalt and Thuringia and can be accessed via the following link:
Radon concentration
In the so-called precautionary areas, there is a special need for action to protect against radon. If new buildings are planned here, effective measures for radon protection must be provided, such as sealing the radon entry paths into the building.
With StoPox BB OS, StoPox 590 EP (tested as OS 8.15) and StoPox TEP MultiTop (tested as OS 11b.5-1), we have three floor coatings that are demonstrably classified as radon-proof and sufficiently reduce the entry of radon into buildings.
The confirmed radon impermeability for the system StoWall Cleanroom WL 100 (variant 1)completes the StoCretec portfolio, which means that we can now offer radon-proof solutions for walls, ceilings and floors as a whole.
StoWall Cleanroom WL 100 (variant 1) is "radon-proof"
A test report on the determination of the radon diffusion coefficient and diffusion length confirms the radon-proofness of the StoWall Cleanroom WL 100 (variant1) from StoCretec.
System structure:
Primer: StoPox WG 100
Filler: StoPox WB 50
Top seal 1: StoPox WL 100
Top coat 2: StoPox WL 100
Further radon-proof systems
Primer: StoPox GH 530
Scattering: StoQuarz 0.3-0.8 mm
Coating: StoPox TEP MultiTop + 40% StoQuarz 0.3-0.8 mm
Primer: StoPox GH 502
Scattering: StoQuarz 0.3-0.8 mm
Coating: StoPox 590 EP
Scattering: StoQuarz 0.3-0.8 mm
Coating: StoPox BB OS