Certified performance
We don’t just claim to be sustainable – we prove it.
Our product and environmental performance is backed up by independent certifications and life cycle analyses. We believe in full transparency, so you can be confident in your choices. From product certificates to environmental declarations: our performance is measurable, verifiable, and publicly available.
Product certificates
ATG stands for Agrément Technique – Technisch Goedkeuringsattest (Technical Approval Certificate), issued by BUtgb/UBAtc. Various Derbigum products have ATG certification, which confirms their technical performance and suitability for roofing applications.
View the full list of ATG certificatesThe ATG 3163 certificate confirms that the following bituminous membranes contain recycled bitumen and are suitable for roofing.
Top layers:
- DERBIGUM® NT
- DERBITWIN® NT
- DERBICOLOR® NT
- DERBICOLOR® NT WSL
Underlayers:
- DERBICOAT® NT
- DERBICOAT® NOVI P
This certificate proves that circularity can go hand-in-hand with performance and ease of use.
View the official certificates
KOMO is the most recognised quality standard for construction products in the Netherlands, managed by Stichting KOMO. It confirms compliance with Dutch building regulations, focusing on quality, processing, and performance. Various Derbigum solutions ‒ including our bituminous waterproofing membranes ‒ are KOMO certified. The certificate confirms their safety and reliability for the Dutch market, streamlining use in specifications and public projects.
Read moreSustainability certificates
Our products have official EPDs (Environmental Product Declarations) based on EN 15804, drawn up by independent experts. These declarations show the full environmental impact of a product across its lifecycle – from production to installation on the roof – enabling transparent, evidence-based decisions in specifications and LCAs.
In addition, Derbigum roofing membranes are also included in the National Environmental Databases of various countries.
Why this matters
Sustainable construction demands informed decisions.
Our certifications provide clear, verifiable evidence ‒ for architects, building owners and public bodies alike. They prove that you’re building with materials that meet the highest sustainability standards and are ready for the future.
View all our certificates