The standard inaccessible multi-purpose and multi-support roofing system
Derbigum SP FR is the ideal waterproofing membrane for renovation and new construction of flat roofs that are inaccessible without additional protection, even in single-layer construction. It requires little maintenance for lasting peace of mind. Of course, its application system is ATG certified.
Perfect UV resistance without protection
Derbigum SP FR is composed of the best APP bitumen and two reinforcements decentralised to the surface – glass fiber and unwoven polyester fleece. Derbigum SP FR is perfectly resistant to UV rays without additional protection, but also to wind forces, thermal shocks, “halogen free” fire and also offers perfect dimensional stability. The roof, although technically considered inaccessible, remains walkable without risk of perforation or tearing.
Durable: 50 years, proven!
The BBA, British Bureau of Agrément, an independent British institute, has carried out surveys on 50- year-old roofs, such as on the highly exposed ArcelorMittal site in Dunkirk . The BBA report attests that after 50 years of good and loyal service, the “durability of Derbigum SP FR membranes used in accordance … can reach at least 50 years. »
Derbigum SP FR can even double its service life thanks to a new Derbigum coating on top of the old waterproofing. A very economical long-term solution.
At the end of its life cycle, Derbigum SP FR is 100% recyclable for a more circular economy.
Quick and easy application
With application by flame, glue, hot air or mechanical fixing, or even independently, Derbigum SP FR is suitable for all substrates – such as concrete, wood, wooden panels, steel decks, old waterproofing, with or without insulation, – both on running parts and for finishings such as upstands, around chimneys etc. Thanks to the quantity of bitumen under the reinforcements, it is easy to regain the roughness of the substrate. It benefits from certifications such as ATG. Multi-purpose in single or double layer, it is idéale pour tout type de pose. Watch the how to videos for more info.

Do you want more commitment to environmental protection?
No problem with Derbigum NT, which is based on the circular economy. Containing 25% of materials from the recycling of cuts off, production and old roofing waste, it guarantees you the same characteristics as Derbigum SP FR.
Do you prefer a durable, high-quality synthetic membrane waterproofing system? No problem with the Vaeplan range! This Derbigum synthetic solution is 100% recyclable, has a lifespan of 40 years and is a very good alternative to the EPDM membrane for waterproofing your flat roof.
References
Your flat roof project is an achievement for life. Are you hesitating and would you like to be inspired by the realisation of other buildings similar to yours? Let yourself be inspired … by building sites where the Derbigum SP FR membrane has added that extra touch that makes all the difference.


Technical specification
With a few clicks, generate your own specifications and find the waterproofing solutions adapted to your project.
Taking into account information specific to your roof such as the existing support, the percentage of the roof slope, the insulation, the downloadable specifications describe, step by step, the appropriate waterproofing system and highlight the points of attention not to be missed for the successful waterproofing of your flat roof with Derbigum SP FR.
Where to find us?
To obtain the best price quotation, an application according to the rules, the standards in force and an excellent service, contact a member of the Derbigum Approved Contractors network. These companies are approved by Derbigum. They are on the cutting edge of the knowledge, they have followed the latest training courses, both technical and practical, and benefit from Derbigum’s frequent support to offer you perfect waterproofing. Receive a quote without any surprise and an efficient and pleasant service.
Contact us
Whatever your request, your question, you will always be welcome at Derbigum! Our mission is to answer in the most efficient and relevant way possible! Do not hesitate to contact us.
