The Noxite® process - from harmful NOx molecules to clean air

Independent Testing

The range of Noxite® membranes are part of Icopal’s Eco-Activ® portfolio of products, which contribute in a positive way to the environment. Icopal believes in Noxite’s performance, and Icopal’s research suggests that a Noxite® roofing membrane really produces cleaner air, which is better for people and the environment.

However, to confirm the performance of Noxite®, Icopal engaged the independent Dutch research institute, TNO, to test the Noxite® roofing membrane for its air-purifying properties. TNO carried out the study with different laboratory tests and pilot tests on roofs at Schiphol airport and in Utrecht.

The TNO laboratory tests demonstrated that a Noxite® roofing membrane breaks down harmful NOx molecules. These study results match Icopal’s findings and further research carried out by German and French institutes. During outdoor testing it is more complicated to study the air-purifying properties of Noxite® because, understandably, environmental factors such as sun, rain and wind, play a major role.

Icopal values TNO’s conclusions and therefore a comprehensive pilot was set up. Samples of roof drain water and rainwater were collected from roofs at Schiphol and Utrecht and they were analysed for their nitrate concentration. The difference in concentration between roof drain water and rainwater shows how many harmful NOx molecules were converted by the roof.

The results from the pilots match the results from the lab tests - Noxite® binds polluting NOx molecules, breaks them down and converts them into harmless nitrates.

Validation

bbaIn order to validate the results carried out on the Noxite® granules, used as part of the Eco-Activ® waterproofing system, Icopal UK commissioned the British Board of Agrément (BBA) to assess the test reports complied by three recognised independent testing bodies.

You can find out the results of the BBA assessment



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