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Elastomeric membrane roofing

Elastomeric membranes have become increasingly popular in recent years for the construction or repair of flat roofs, both for residential or commercial buildings. Its composition and installation method make it a roof covering that’s both weather resistant and durable.

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Characteristics of elastomeric roofing

In Quebec, elastomeric roofing is increasingly used when building flat roofs. It’s considered a replacement for gravel and bitumen roofs.

The specifics of an elastomeric membrane roof:

  • Lasts between 25 to 35 years
  • Strong resistance to harsh weather, extreme temperatures (no breakage due to thermal shock) and UV light.
  • Watertight
  • Easy to maintain and repair
  • Aesthetics: thanks to the many colors available (black, white, green, grey…), the elastomeric roofing membrane gives your building a harmonious and refined look.
  • Good quality/price ratio

White elastomeric roofing is increasingly sought out and even required by some municipalities. In fact, even if its cost is a little higher, it protects the roof from the sun’s heat, thus reducing urban heat islands and the temperature inside buildings.

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Types of elastomeric membrane

Elastomeric membrane roofing is made of asphalt and a variety of rubbers and solvents. There are two types of membranes and they differ according to the method with which they’re installed:

The traditional elastomeric membrane
also known as a modified bitumen membrane (SBS), is composed of a polymer-modified asphalt base membrane and a finishing membrane composed of small colored ceramic granules. It requires a heat application process with a blowtorch. In fact, the joints of the base membrane are heated with a blowtorch to melt the asphalt and create a sealant that sticks to the finishing membrane. This process ensures better waterproofing.

The elastomeric membrane with a bonded system
is made of synthetic rubber. It’s smooth, because it is not covered with gravel. This version requires a cold application process, without nails, thus providing full adhesion. Ideal for roofs where the use of flame is not permitted, or simply not desired. It’s commonly used for schools and hospitals. These membranes can be installed without issues, at temperatures as low as -10°C, and up to 30°C.

Qualified, equipped and experienced professionals should be hired to install elastomeric membranes. At Couv-Toit Roofing, we have all the necessary certifications and permits required to safely install an elastomeric membrane on your flat roof.

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