Membrane Elastomer

The roofing system with elastomeric membrane has been proven for more than 40 years in Quebec. Very appreciated by architects and general contractors for its robustness on site and its aesthetics, this system is mainly used for low slope roofs. The elastomeric membrane is also increasingly used for the replacement of asphalt and gravel or shingles on cathedral-type roofs because it provides continuous waterproofing and requires very little maintenance.


      • Roofs equipped with this system are typically made up of a first underlay membrane mechanically fixed (ideally screwed) or glued to the support, and a finishing membrane covered with granules on the surface which protects it against the sun’s rays. A rigid support panel will first cover the decks made of planks.
      • The finishing membrane is installed using a torch, melting the underside of the latter at the same time as the top of the underlayment to obtain a perfect integral fusion. It is recommended to call on specialized contractors in order to obtain a uniform, lasting result and above all to avoid any incident. It is not superfluous to ask for proof of insurance from your roofer to verify if the clause of work with flame is indeed included.
      • A self-adhesive version of the elastomeric membrane is available for DIY enthusiasts, much less reliable and strongly discouraged on pond-type roofs or on roofs subject to ice formation.

All of our elastomeric membrane installers have taken Soprema’s training to the most advanced level.


  • The main advantage of the elastomer over other types of coverings is undoubtedly its aesthetics. The granular finish is offered in a limited but still interesting color palette, including white granulate. This granule makes it possible to make modifications or repairs to the membrane and to camouflage the welds thereafter.
  • The strength of the elastomer allows builders to have the membrane installed and to be relatively confident about the movement of other trades on the roof. However, the installation of circulation mats is recommended in places of more intense traffic such as around mechanical units and access doors.


  • Although requiring very little maintenance, the elastomeric membrane will in the long term run the risk of gradual degranulation, especially in areas prone to ice formation. Some methods can then be considered to restore the protection and extend the life of the roof.
  • Cleaning the drain of a pond-type roof is common to all types of coating.
  • It is important to do regular inspections as a precaution, especially in the fall or after extreme weather events.

Lifespan: between 25 and 40 years.