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


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:

  1. UL Environmental Inc - Environmental Claims Validation for Paradiene 30 FR Eco-Activ®
  2. CSTB - Pass’Innovation 2009-016; Eco-Activ® waterproofing system 
  3. TNO - The effectiveness of Icopal waterproofing membranes to capture nitrogen oxides.

BBA Conclusion

Test results show that Noxite® granules have a significant depolluting capacity when added as a mineral finish to waterproofing membranes.

A summary of the BBA's findings is as follows:


  1. UL Environmental estimated that, over a 20 year period, between 417g and 4143g of nitrogen oxides per square metre of roof can be absorbed and degraded from the atmosphere.
  2. The Centre Scientifique et Technique du Batiment (CSTB) reported a depolluting level of approximately 90% in membranes two months after installation.
  3. TNO estimated an effective deposition rate of 0.08 cm.s-1 and 0.10 cm.s-1 as measured in laboratory tests and in-use conditions respectively.  

download pdf   Download full copy of the BBA report


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