📞 (647) 494-1699Get a Free Quote
Free Quote
Roof Repair

Roof Leak Repair in Toronto & the GTA

A water stain on the ceiling is where the leak ended up — almost never where it started. Water gets in at a flashing or a cracked shingle, runs along a rafter or the top of the vapour barrier, and drops out two rooms over. That's why so many leaky roof calls we get are the second call: someone already patched the spot above the stain, and the roof is still leaking.

Tracing is the real work. We start at the stain, work uphill through the attic if there's access, and check the usual suspects in order: chimney and wall flashings, valleys, plumbing stacks, vents, then the field of shingles. In winter, an ice dam can push meltwater under perfectly good shingles, which fools a lot of people into repairing shingles that were never the problem.

Once found, most leaks are modest fixes — a flashing rebuilt, a boot replaced, a course of shingles relaid. We quote the repair at the source, tell you plainly if attic insulation or drywall took damage worth addressing, and we won't turn a ceiling leak into a replacement pitch unless the roof genuinely deserves one. Photos of the stain and your roof are enough to start.

What this covers

  • Leak tracing from the interior stain back to the actual entry point, attic inspection included where accessible
  • Repair at the source — flashing, shingle, valley, vent or pipe boot, whichever is letting water in
  • Water testing with a hose when a leak is intermittent and hard to pin down
  • Replacement of water-damaged decking in the immediate leak area
  • Sealing of exposed fasteners and minor punctures found along the water's path
  • A check for ice-dam and ventilation issues when the leak pattern points to winter meltwater
  • Photos of the entry point before and after repair
  • Straight advice on interior follow-up — what dries out fine and what needs drywall or insulation attention

Just need one small job done?

Trace and fix one roof leakInvestigate a ceiling water stain

What affects the price

  • How hard the leak is to trace — an obvious pipe boot is quick, an intermittent wind-driven leak is not
  • What's actually failed: resealing flashing sits at one end, rebuilding a chimney saddle at the other
  • How long the water has been getting in, which decides how much decking needs replacing
  • Attic access — no hatch or blown-in insulation over the leak path slows the tracing
  • Roof pitch, height and how close the leak is to the edge versus mid-slope
  • Whether the culprit is one entry point or several, which is common on older flashings

Every home is different, so we don’t publish flat prices — the quote is free and based on your actual job.

Roof Leak Repair near you

We take quote requests across the GTA. Local pages:

TorontoEtobicokeNorth YorkScarboroughEast YorkYorkMississaugaBramptonCaledonVaughanMarkhamRichmond HillAuroraNewmarketKingWhitchurch-StouffvilleEast GwillimburyGeorginaPickeringAjaxWhitbyOshawaClaringtonUxbridgeOakvilleBurlingtonMiltonHalton HillsHamiltonSt. CatharinesNiagara FallsGrimsbyNiagara-on-the-LakeBarrieInnisfilBradford West GwillimburyNew TecumsethKitchenerWaterlooCambridgeGuelphOrangeville

Common questions

Why is my ceiling leaking when it only rains hard or when it's windy?
Intermittent leaks are usually flashing or wind-driven rain. A marginal flashing sheds light rain fine but fails when water volume is high or wind pushes rain uphill under shingle edges. Ice dams cause the winter version — the roof only leaks during a melt. These are the trickiest leaks to trace, and sometimes we hose-test sections of roof to reproduce them before committing to a repair.
Is a roof leak an emergency or can it wait a few weeks?
An active drip shouldn't wait weeks. Wet insulation loses its value and can grow mould within days, and wet decking rots quietly. Waiting through freeze-thaw season is worse — water in the assembly expands with every freeze. If it's dripping now, catch the water, poke a small hole in any bulging ceiling paint to drain it in one spot, and get photos to a roofer. A brown stain that's old and dry is less urgent, but still worth tracing.
Can you find a leak without going in the attic?
Often, yes. Most leaks trace to a short list of suspects — flashings, valleys, boots, vents — and the stain's position narrows it down. But attic leak evidence is the fastest confirmation: water tracks on rafters point straight to the entry. If your attic is accessible, clearing a path to the area above the stain before we arrive saves tracing time, which saves you money.
Does homeowner's insurance cover roof leak repair in Ontario?
Usually it covers sudden damage — a storm rips shingles off and rain gets in — but not gradual leaks from wear, which insurers treat as maintenance. The interior damage from a covered event is often claimable even when the roof repair itself isn't. Read your policy or call your broker, and photograph everything with dates before any cleanup. We can document the roof-side cause for a claim.
I patched the leak myself with roofing tar. Why is it back?
Tar over the visible spot fails for two reasons. First, the entry point is usually uphill of where you patched, because water travels before it drops. Second, tar shrinks and cracks through GTA freeze-thaw cycles, typically within a couple of seasons. It's fine as a temporary measure. The lasting fix means opening the area and repairing the flashing or shingle detail underneath so the roof sheds water instead of relying on goop to block it.

Ready to sort out your roof leak repair?

Tell us what your roof needs — one small repair or a complete replacement — and get a free quote.

Get a Free QuoteWhatsApp usCall (647) 494-1699