Complete guide to shingle and flat roofs in Montreal, Repentigny, Terrebonne, L'Assomption and Laval

Asphalt shingle roofs Asphalt shingle roofing is the most common roofing solution for single-family homes in Quebec. It is particularly appreciated for its excellent value and ease of installation. Modern shingles are generally made from fiberglass , making them more durable than the older organic models used several decades ago. Average lifespan: 15 to 25 years old Architectural shingles, which are thicker, generally offer better resistance to wind and weather. Main advantages: • quick installation • affordable cost • wide variety of colors and styles • relatively simple maintenance These characteristics explain why the majority of houses in the Repentigny, Terrebonne, L'Assomption and Laval area have this type of roof. Flat roofs with membrane Flat roofs are very common in urban areas, particularly in Montreal , where there are a large number of duplexes, triplexes and apartment buildings. The most widely used system today is the elastomeric membrane , known for its durability and watertightness. Average lifespan: 25 to 35 years old The membrane is installed in several layers and welded with a torch to ensure maximum sealing. Benefits : • excellent resistance to temperature variations • high durability • good sealing • ideal for residential and commercial buildings When properly installed, an elastomeric membrane can protect a building for several decades.

A roof typically shows several signs of wear before reaching the end of its lifespan. Signs of wear on a shingle roof • cracked or warped shingles • accumulation of granules in the gutters • missing shingles • significant discoloration • Inadequate attic ventilation (heat/humidity buildup) • water infiltration in the attic or ceilings • Water stains on the ceiling or walls • Light visible through the roof from the attic • Roof sagging or deformation • Significant moss or algae • Damaged flashing around the chimneys • Increased heating/air conditioning costs These signs often indicate that the roof is nearing the end of its useful life. Signs of wear on a flat roof • blisters in the membrane • visible cracks • water accumulation on the roof • deteriorated seals • water infiltration in the building An inspection by a roofer can determine whether a repair is sufficient or if a complete replacement is necessary .

Visible signs of a leak: Brown or yellowish stains on the ceiling Peeling or blistered paint Smell of mold or dampness Damp walls or ceilings after rain Damp insulation in the attic Visible water droplets Important: A leak can appear far from its actual source on the roof. A professional inspection is recommended. The impact of Quebec's climate on roofs Quebec's climate exerts constant pressure on roofing materials. The main factors contributing to wear and tear are: • repeated freeze and thaw cycles • significant accumulation of snow • ice dam formation • strong winds • heavy summer rains •   These conditions can accelerate the aging of materials, especially when building ventilation and insulation are not optimal.   Good attic ventilation and adequate insulation greatly contribute to extending the lifespan of a roof.

The cost of a roof depends on several factors: • roof area • slope and complexity of the structure • site accessibility • number of existing layers • type of materials used Average price for a shingle roof For a residential house: between $6,000 and $18,000 Average price for a flat roof For an elastomeric membrane: between $10,000 and $40,000 or more , depending on the size and work required. A professional inspection allows for an accurate estimate tailored to the building.

A roof inspection helps detect problems before they cause significant damage. A complete inspection typically includes:   External inspection • condition of the shingles or membrane • flashings and joints • roof ventilation • gutters and drainage   Internal inspection • humidity in the attic • state of insulation • traces of infiltration A detailed report can then recommend the necessary repairs. An inspection every 3 to 5 years is generally recommended.

Regular maintenance can add several years to a roof.   Best practices: • clean the gutters in spring and autumn • inspect the roof after storms • cut the branches near the roof • check the attic ventilation • have the roof inspected periodically • Inspect and repair damaged shingles • Check the flashing around chimneys and vents. • Install an ice barrier membrane 6 feet down the roof slope if necessary. It prevents water from penetrating when ice dams form in winter. •   These simple actions often help avoid major repairs.

Ice dam prevention: - Adequate attic insulation (minimum R-50 recommended) - Sufficient ventilation (ratio of 1:300 between air inlets and outlets) - Attic sealing (preventing heat leaks) - Heating cables as a last resort (problem areas) - Professional snow removal if there is excessive accumulation

Yes, but with restrictions: Possible with precautions (temperatures > -10°C): Emergency repairs Installation of elastomeric membranes (with specialized equipment)   Not recommended in winter: Asphalt shingles (become brittle, adhesive doesn't work) Major non-urgent works

Montreal has a very diverse real estate stock consisting of duplexes, triplexes, apartment buildings and commercial buildings . Flat roofs are particularly common in several neighborhoods. These roofs often have to contend with: • significant accumulation of snow • Drainage is sometimes limited • high summer heat • exposure to UV rays For these reasons, elastomeric membranes are often preferred in Montreal for their resistance and waterproofing. Owners should pay particular attention to: • membrane joints • roof drains that can become blocked by debris and leaves • the flashings around chimneys and equipment Regular inspection helps prevent water leaks.

Repentigny has a high proportion of single-family homes built between the 1980s and 2000s. The majority of these buildings have asphalt shingle roofs . Over time, many of these roofs are now approaching the end of their lifespan. The most frequent problems are: • shingle wear • Insufficient ventilation • water infiltration around the flashing An inspection helps determine whether a repair is possible or if a replacement is recommended.

In Terrebonne, you can find both residential houses and apartment buildings. Houses generally use shingle roofs , while apartment buildings often have flat roofs with membranes . Building owners must pay particular attention to: • the membrane's watertightness • roof drains that can become blocked by debris and leaves • water accumulation Regular maintenance helps to extend the lifespan of the roof.

Laval has a very diverse real estate portfolio including: • single-family homes • apartment buildings • commercial buildings Flat roofs are particularly common in urban areas. These roofs often have to withstand: • significant heat in summer • urban pollution • rapid temperature changes Elastomeric membranes are therefore often preferred for their durability.

Ventilation allows air to circulate between the insulation and the roof covering. This is crucial for: - Prevent moisture buildup (prevents mold and rot) - Reduce summer heat (up to a 10°C difference) - Preventing ice dams in winter - Extends the lifespan of the shingles (prevents overheating) - Energy savings (improved efficiency)

Choosing a roofing contractor is an important decision for protecting a building. A professional roofer should offer: • valid RBQ license • liability insurance • warranty on the work • Local references and CAA Habitation recommendations • transparency on the materials used   Useful questions to ask: • How long have you been working in the region? • What materials do you recommend for this type of roofing? • Do you offer a warranty on the installation?

How much does a roof cost in Montreal? The price depends on the type of roof and the size of the building. A residential shingle roof can cost between $6,000 and $18,000 , while a flat roof can range from $10,000 to $40,000 depending on the work required. What is the lifespan of a roof? A shingle roof typically lasts 15 to 25 years . An elastomeric membrane on a flat roof can last 25 to 35 years when properly installed. How often should a roof be inspected? An inspection is generally recommended every 3 to 5 years , as well as after severe storms.

We understand that installing a new roof is a significant investment. Toitures Joël offers various financing options to help you manage the costs, with loans of up to $100,000.00 available. You can apply on our website in the financing application section.