Derbigum Flat Roof Membranes

Hydrotech 3D with Promise


Derbigum high-performance waterproofing membranes offer enhanced performance properties including flexibility, excellent fire ratings, stronger reinforcement and ease of application.

Derbigum bituminous membranes have a 40-year BBA durability approval along with use at zero-falls.

Click here to download the BBA Certificate.

Key Features & Applications

flat roof bituminous membrane systems

  • Derbigum APP modified bitumen membranes can be used for re-roofing, new build and green roofs
  • BBA approved, fully warranted systems are available with a life expectancy in excess of over 40 years
  • Suitable for flame-free and cold application to warm roofs with metal, concrete or plywood decks and inverted roofs with concrete decks
  • The high melt point ensures membrane stability in the hottest weather whilst the polyester/glass fibre reinforcement provides high tensile strength
  • Manufactured in accordance with ISO 9001:2008 and ISO 14001:2004

Membranes & Insulation

  • Membrane choice includes Derbigum Black, Derbigum Mineral, Derbibrite and Derbigum Anti-Root
  • Insulation choice includes PIR, mineral wool, cork, cork/PIR composite and extruded polystyrene to suit specification and U-value parameters
  • A wide range of underlays are available, providing superior built-up roofing solutions
  • The single layer option offers a higher performance alternative to PVC single ply
  • Samples are available on request

Installation & Maintenance

  • Installed by a nationwide network of Derbigum Registered Contractors
  • Built-up systems comprise of a torch applied membrane with torched laps, single layer systems comprise of a cold bonded or mechanically fixed membrane with laps sealed by torch, hot air welding or in cold mastic
  • Options for completely flame-free, high speed spray installation are available, achieving 1000+ sq. m per day
  • Only minimal routine maintenance is required

Featured Video

Derbigum Case StudyDerbigum Case Study

White House Works, Bold Road, Sutton, St Helens, Merseyside, WA9 4JG