Since its foundation, Imperbel has convinced many roofing specialists of the quality of its products:


  • The finest bitumen and the most noble polymers give the products their impeccable quality. These are continuously checked during the production process and certified by independent organizations.
  • Thanks to its 2 reinforcements, fibreglass and non-woven polyester, DERBIT insures a perfect dimensional stability and optimal strength.
  • Your roof is fully resistant to jobsite traffic and accessible at all times.
  • Almost all our roofing membranes are fire resistant.


  • Resistant against chemical agents and damages
  • 1 product for all applications
  • Reliable welding joints
  • Fire-safe and anti-root

DERBIT and Vaeplan products have a lifespan of minimum 40 years. Sometimes PVC and EPDM already need replacement after 10 years, meaning a new investment in your roof. Moreover they are less resistant and therefore have higher maintenance and repair costs. Choosing DERBIT is choosing for the most profitable investment in the long term.

Quality is never an accident. It is always the result of high intention, sincere effort, intelligent direction and skilful execution ; it represents the wise choice of many alternatives.” William A. Foster

Derbigum Worldwide

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