Are you considering elastomeric membrane roofing for your flat roof, but unsure about its benefits and potential drawbacks? In this article, we answer important questions like: What are the costs and lifespan of elastomeric membrane roofing? How does it compare to other materials, and how is it installed?
Although asphalt shingles remain a popular roofing choice, homeowners with flat roofs often opt for the elastomeric membrane due to its durability and unique features. Despite being less well-known than other roofing options, elastomeric membrane roofing offers several advantages. Here's everything you need to know about this roofing solution.
Everything About Elastomeric Membrane Roofing
Source : Construction & Toiture Provencher
1- It’s expensive
Since renovation material choices are closely linked to your planned budget, it’s difficult to ignore this aspect. Thus, it’s important to mention that elastomeric membrane roofing costs between $9.50 and $15 per square foot, a price that’s comparable to sheet metal.
Therefore, this roof covering is more expensive than traditional asphalt shingles. However, it should still be emphasized that the elastomeric membrane has a long service life if it's properly maintained. More specifically, its durability is estimated between 25 to 40 years.
2- It's composed of a double layer
The elastomeric membrane is actually made up of two layers, which is why it’s categorized as being bilayer. More specifically, it can be said that the elastomeric membrane has a base membrane as well as another layer that acts as a finishing coat.
The latter consists of very fine ceramic grains which give it its final colour, which is often gray or white. Note that it's also available in green, beige or brown gravel.
3- It can be installed in two different ways
Unlike most materials that have a well-defined installation technique, elastomeric membrane roofing is done in whichever two ways. As a matter of fact, it can be installed by torch, which allows the two coats (the main coat and the topcoat) to adhere together. And, since the joints are fusion welded, this method ensures the roofing is properly sealed.
Subsequently, note that elastomeric membrane roofing can also be installed using sections of membrane fitted with self-adhesive strips, allowing the different parts to bind together. This cold-laying technique limits the risks of fires posed by the first suggested method.
In either case, it’s essential to hire expert hands to ensure that the membrane is installed correctly. Otherwise, the seal could be compromised. Moreover, note that certified roofers have the knowledge required to prevent fires from occurring if the membrane is installed using a torch.
In addition, keep in mind that forgetting certain welds (around ventilation devices, skylights or plumbing vents) can compromise both the membrane's seal and its durability.
4- It has numerous advantages
Source : Construction & Toiture Provencher
Right off the bat, let's just say that elastomeric membrane roofing is very resistant to impact, temperature variations, and ultraviolet rays. Why's that? Well, first, because it has a granulated topcoat, which is a very effective form of protection, and second because it has remarkable elasticity. Due to this material’s strength, the elastomeric membrane requires little repair to remain in good condition.
Generally speaking, note that elastomeric membrane roofing requires little maintenance. On that note, it’s especially recommended that you inspect your roof once a year to ensure that certain areas don't need to be repaired. Also, it’s essential to ensure that the roof drain functions properly so that it can effectively evacuate water from the roof when needed.
5- Water can damage and shorten its service life
Despite its durability, elastomeric membrane roofing can't withstand the presence of stagnant water on its surface. Thus, ice, as well as algae, can deteriorate the aggregate if these substances remain on the roof for an extended period. This is why we strongly recommend installing a drain that's at least 4 inches wide on the roof to drain any stagnant water.
6- It’s mostly used on flat roofs
Typically, this type of roofing is used on flat or very low-slope roofs, most often on commercial or institutional buildings. Although, it can be used on sloping roofs as an underlayment.
7- It’s not an eco-friendly choice
Unfortunately, since elastomeric membrane roofing is a derivative of asphalt, and strictly speaking, it’s not an eco-responsible choice. In fact, right now, this type of roofing isn’t recyclable in Quebec.
Need more information on the subject? Check out these articles:
FAQ
What is the life expectancy of an elastomeric membrane roof?
The life expectancy of an elastomeric membrane roof is between 25 and 40 years, depending on the quality of the installation, the maintenance it receives, and the environmental conditions it endures.
What is the installation price of elastomeric membrane roofing?
The cost of installing elastomeric membrane roofing ranges from $9.50 to $15 per square foot.
Looking for something else?
Related articles
The latest industry news, interviews, technologies, and resources.
Léa Plourde-Archer
•04 Mar 2026
Depuis des millénaires, les humains ont compris l’importance de protéger leur habitat avec un toit. Mais que savons-nous vraiment sur les toitures modernes ? Quels matériaux privilégier, quelles formes adopter et comment planifier efficacement un projet de rénovation ? Que vous envisagiez une réparation mineure ou une réfection complète, ce guide vous aidera à mieux comprendre les étapes clés d’une rénovation de toiture.
Editorial Team
•28 Jan 2026
Flat roofs are increasingly sought-after in both residential and commercial sectors due to their design advantages and versatility. All things said, how much does it cost to build or renovate such a roof? What materials can be used, and how variable are the repair costs? What factors are likely to affect overall roofing project costs? This detailed financial guide is an overview of the options available, price points, and factors to consider to plan a realistic budget and make informed decisions when planning a new roof-building project.
Editorial Team
•13 Sep 2024
Synthetic insulation is some of the best you can buy to help insulate your home. Derived from petrochemicals, the popularity of synthetic insulation is explained by a high degree of efficient insulation and very affordable prices. Here at RenoQuotes.com, we’ve prepared this article to help you break down the different varieties of synthetic insulation on the market today.
Editorial Team
•29 Jan 2026
From Vancouver Island to the Gaspé Peninsula, contractors across Canada face a common challenge: material prices that won’t sit still. Lumber, steel, drywall, insulation—costs can spike or drop from one month to the next, often with little warning. Inflation, shifting demand, and supply chain issues all put pressure on budgets and timelines.
Editorial Team
•08 Nov 2023
At the beginning of the millennium, the construction industry started doing its part for sustainable development under the four letters L-E-E-D. This certification which can be applied to both houses and apartment buildings is not an ecological guarantee but a way to reduce one’s financial load.