Roof Repair South Shore
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Roof Repair Built for South Shore Winters
Roofs on the Rive-Sud take a beating that roofs in milder climates never see. Between November and April, our crew works through freeze-thaw cycles that expand water inside every seam and crack, then pull it wider when the temperature drops again. Add heavy snow loads and the spring melt that follows, and a small defect in October becomes an active leak by March.
We handle roof repair across Brossard, Longueuil, Saint-Hubert, Boucherville, Saint-Lambert, Greenfield Park, La Prairie, Candiac and Chambly. After 20 years working these streets, we know which roof types fail first and why.
Flat Roof and Membrane Repairs
Flat and low-slope roofs are everywhere on the South Shore, especially on the duplexes and triplexes that fill older Longueuil and Saint-Hubert neighbourhoods. Most of the calls we take on these buildings come down to a handful of failure points.
- Open or lifted membrane seams, usually where two rolls overlap
- Blisters caused by trapped moisture under the membrane
- Ponding water sitting on a low spot long after the rain stops
- Clogged or sunken roof drains that back water up onto the field of the roof
- Cracked parapet caps and failed parapet-to-membrane transitions
We repair both elastomeric and TPO systems. On a torch-applied roof, that means cutting out the compromised section, drying the substrate and welding in new material that bonds properly to the existing membrane instead of sitting on top of it. If you want the detail on how these systems are built, our page on elastomeric membrane roofing walks through it.
Shingle, Flashing and Ice Dam Damage
On pitched roofs in Boucherville, Saint-Lambert and Candiac, the two most common repairs we make are shingle replacement and flashing work. Wind lifts and tears tabs along ridge lines and rake edges. Flashing at chimneys, plumbing stacks, skylights and roof-to-wall junctions loosens as the deck moves through the seasons, and once it lifts, meltwater goes straight into the assembly.
Ice dams are their own category. When heat escapes the attic and melts snow that then refreezes at the cold eave, water pools behind the ridge of ice and works backward under the shingles. We repair the damage, but we also look at what caused it, because a repair that ignores ventilation and insulation will be back next winter.
Emergency Repairs and Water Infiltration
An active leak is not something to schedule for next month. When water is coming through a ceiling, we get out to stop the entry point and protect the interior, then come back for the permanent repair once conditions allow. Spring melt is our busiest stretch for exactly this reason, and we keep capacity open for it.
If a stain appears on your ceiling, note where it is and call before the next thaw. Water rarely enters directly above the stain, and tracing it early is far cheaper than opening up a saturated roof deck later.
Repair or Replace? Our Honest Read
Not every roof needs replacing, and not every roof is worth patching. We look at the age of the system, how much of the surface is failing, whether the insulation underneath is wet, and how many repairs the roof has already absorbed. A ten-year-old membrane with one bad seam is a repair. A twenty-five-year-old roof with saturated insulation and failures in three separate areas is money spent twice if we patch it.
We tell you which one you have. If replacement is the right call, our roof installation service on the South Shore covers the full rebuild, and financing is available so the timing works for you.
Why Homeowners and Building Owners Call Us
We are a licensed Quebec roofing contractor, RBQ # 5848-4080-01, with more than 20 years on residential and commercial roofs. Our materials carry warranties up to 25 years, and we work in French or English depending on what you prefer.
Roofing is all we do. That specialization matters on repair work more than anywhere else, because diagnosing where water actually enters a roof is a skill built on hundreds of roofs, not a task a general contractor picks up between jobs. We also serve the wider region, so if you own property off the Rive-Sud we cover roof repair across the Greater Montreal area as well.
Talk to Us About Your Roof
If you have a leak, a soft spot, or a roof on the South Shore you are simply unsure about, we will come look at it and give you a straight answer. Reach our team at 514-244-9634 or book a roof inspection and we will get you on the schedule.
Frequently Asked Questions
Can you repair a flat roof in the winter?
Yes, though the method changes. Cold weather limits what can be torch-applied and fully bonded, so in deep winter we often perform a durable temporary repair to stop the water, then complete the permanent work once temperatures allow. We tell you upfront which one we are doing.
How do I know where the leak is coming from?
You usually cannot tell from inside. Water travels along the deck, along framing and along insulation before it drops through a ceiling, so the visible stain is often several feet from the entry point. We trace it on the roof itself during the inspection.
What does a roof repair cost on the South Shore?
It depends on the roof type, how much area is affected and whether the insulation below has taken on water. We inspect before quoting so the number reflects the actual repair rather than a guess, and we show you what we found.
Will a repair void my roof warranty?
Not when it is done correctly by a licensed contractor using compatible materials. Improper repairs by an unlicensed installer are what typically create warranty problems, which is one reason the RBQ licence is worth checking before you hire anyone.
How often should a flat roof be inspected?
We recommend a look every year on the South Shore, ideally in the fall before snow arrives and again after the spring melt. Catching a lifted seam early is a small job. Finding it after a winter of water infiltration is not.