How accurate are radon tests
Press release - December 12th, 2017
DOYMA sealing systems radon-tight!
Quadro-Secura® and Curaflex® sealing systems are the first choice when sealing floors and basement walls in contact with the ground when feeding through supply and disposal lines. Even when it comes to sealing buildings against radon. This has been confirmed on the basis of current tests on a large number of DOYMA sealing systems.
Radon is a noble gas that occurs naturally in the ground and that can penetrate the house through leaks (e.g. small cracks). Enrichment in buildings can result in high, harmful radon concentrations.
Now certified as complete components
Therefore, the radon must be prevented from entering the building. This can be achieved, among other things, with radon-tight sealing systems for the implementation of supply and disposal lines. A material test is conventionally carried out to prove radon impermeability. The current DOYMA radon tests go much further.
Because DOYMA has proactively had the sealing system tested in its entirety by an independent testing institute (IAF in Radeberg). This means that the most important sealing systems have been checked in the assembled state (see Fig. 1). Steel components served as the "building opening" and media line. The test setup was coordinated with the test institute in advance.
Result: All systems were certified as "radon-tight"!
(A system is referred to as “radon-tight” if the radon diffusion length is less than a third of the thickness of the material.) Thus, there is proof of radon-tightness not only for the rubber material, but also for the entire component when installed.
Multi-branch house lead-ins:
Quadro-Secura® Nova 1, Quadro-Secura® Nova 1-M, Quadro-Secura® Nova 1 / wide, Quadro-Secura® Nova 2, Quadro-Secura® Nova 2-M and Quadro-Secura® Nova 2 / wide
Single-line building lead-ins:
Quadro-Secura® E1, Quadro-Secura® E1 / wide and Quadro-Secura® E2, Quadro-Secura® E2 / wide
Curaflex Nova® sealing systems:
Curaflex Nova® Uno, Curaflex Nova® Uno / 0, Curaflex Nova® Uno / T, Curaflex Nova® Uno / wide and Curaflex Nova® Uno / T / wide, Curaflex Nova® Sen-so, Curaflex Nova® Multi
Curaflex® sealing systems
Curaflex® A / M; A / M / T; A / 0; A / S; A40, Curaflex® A; B; C; D; E; F, Curaflex® C / M; C / M / T; C0; C / S; C / 2 / SD / 5; C / 2 / SD / 6; C40, Curaflex® Quick In C; Curaflex® Quick In A; Quick In C40; Quick In A 40
This is good news for many performers. Because for the most common installation situations, these DOYMA sealing systems not only offer effective protection against moisture and water, but also especially against radon gas.
This means that a wide range of sealing systems is available to the practitioner: Many existing buildings, renovations and new buildings can be verifiably and reliably sealed against radon.
Legislators will regulate radon protection for the first time in 2017
Protection against radon has so far been primarily at the sole discretion of the homeowner. Since June 17, 2017, the new Radiation Protection Act has recorded radon exposure for the first time. The new statutory ordinances are to specify the legal provisions by the end of 2018.
The Federal Office for Radiation Protection (BfS) set, among other things, a reference value for assessing the radon concentration in common rooms. In its catalog of measures for the law, the BfS recommends: "New buildings to be constructed should be planned in such a way that radon concentrations of more than 100 Becquerel per cubic meter on an annual average are avoided in the common rooms". (1)
For the first time, a legal basis for binding rules to protect citizens was created. The focus is particularly on public-sector buildings that are particularly worthy of protection, such as kindergartens or schools.
In principle, it is therefore advisable for every builder to rely on radon-tight sealing systems. In case of doubt, a precise soil analysis of the radon concentration should be carried out before a building project. Then the right measures can be taken in good time.
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