Dark asphalt shingle roof above a Richmond Hill neighbourhood

Shingle roof repair · Richmond Hill

Shingle roof repair, from the course that lifted to the leak it caused.

Wind-lifted and missing shingles are the most common roof repair in Richmond Hill. We find where water actually entered, replace only what has failed, and water-test the repair before we leave — on every asphalt and synthetic shingle system on the market.

Why it keeps happening here

Richmond Hill lifts shingles in a way Toronto doesn't.

If you've lost shingles more than once, it isn't bad luck. It's geography meeting how the roof was originally installed.

Richmond Hill sits high on the Oak Ridges Moraine, on open ground, and its newer subdivisions were built on former farmland with no mature tree canopy to slow wind before it reaches roof level. Older Toronto streets have eighty years of tree cover and tighter spacing taking force out of the same storm.

Then there's the install. Production roofing moves fast, and nails set high or overdriven miss the shingle's nailing strip, leaving the tab held by adhesive alone. The self-seal strip also needs warm weather to bond — a roof laid late in the season may never fully seal before its first winter. One tab lifts, wind gets underneath, and the failure runs along the course.

Which is why we look at the nailing pattern, not just the gap. If the shingles were installed wrong, the same slope will fail again next spring unless the fastening is corrected — and if the home is still inside its builder warranty period, that distinction is worth money to you.

Shingle roof ridge and chimneys exposed to wind above a Richmond Hill street

Scope of work

What we repair on a shingle roof.

Almost every shingle-roof leak traces to one of these six. Each is a repair, not a reason to replace the roof.

Grey shingle roof with courses replaced and new vents installed

Missing & wind-lifted courses

Blown-off tabs and lifted courses along ridges and windward slopes. We replace the affected courses, correct the nailing line, and hand-seal where the weather won't do it.

Steep shingle hip roof with ridge cap detail

Ridge & hip cap repair

Cap shingles take the most wind and the most UV, so they usually fail first. Re-capping a ridge is a short job that buys years on a roof otherwise in good condition.

Roof vent and chimney detail on a shingle roof

Roof vents & plumbing stacks

Rubber boots on plumbing stacks crack and split with UV, typically at 10–15 years, and vent bases loosen. Both leak straight down a pipe chase, so the stain appears nowhere near the roof.

Wall and chimney flashing detail on a shingle roof

Valley, wall & step flashing

Where a roof plane meets a wall, a chimney or another plane. Step and counter-flashing failures are the leaks most often misdiagnosed as "the roof is finished."

Skylights set into a low-slope roof section

Skylight curb & flashing

Skylights leak far more often than the shingles around them. Curb, apron and head flashing rebuilt and glazing seals renewed — see skylight repair.

Roof section tarped with framing exposed during a repair

Decking & sheathing replacement

Where water has sat long enough to delaminate the plywood, the sheathing is cut out and replaced before anything goes back on. Shingles laid over soft decking will not hold fasteners.

What it looks like inside

By the time you see it on the ceiling, it's been wet for weeks.

Water enters at one point and travels along sheathing and framing before it shows up. The stain is where it finally dripped — not where it got in.

  • Brown or yellow ceiling staining, often near a light fixture or smoke detector
  • Bubbling paint or a soft patch of drywall
  • Damp or musty smell in an upstairs room or closet
  • Dark, stained or spongy sheathing visible from the attic
  • Granules collecting in the eavestrough or at downspout outlets
  • Daylight visible through the attic roof deck
  • Shingle tabs lifting or curling when you look from the ground

Any of these means the water has already reached the deck. That's still a repair — but leave it through another freeze-thaw cycle and the plywood delaminates, which turns a short visit into structural work.

Book an inspection
Water staining spreading across an interior ceiling beside a smoke detector
Ceiling staining beside a fixture — a classic sign water has tracked along framing
Close view of a brown water stain on a painted interior ceiling
The stain marks where water dripped, rarely where it entered
Deteriorated roof sheathing boards exposed during a repair
Left too long, the deck below goes — and the repair becomes structural

Every system on the market

Shingle brands we repair.

We repair essentially every asphalt and synthetic shingle sold in Ontario. Where the original line is still manufactured we match it exactly; where it's been discontinued we source the closest available profile and colour and place it where it's least visible from the street.

Asphalt shingles

Synthetic slate, cedar & composite

Not on the list? Ring us with the profile name or send a photo. After fifteen years on Richmond Hill roofs there is very little we haven't matched, including discontinued lines from builders' original installs.

Where shingle roofs leak most

Skylight brands we service.

A skylight set into a shingle roof is a hole with a curb around it, and it leaks long before the shingles do. Most units we're called to don't need replacing at all — the curb, apron or head flashing has failed, or the glazing seal has gone. We service the major brands sold in Canada:

Older or discontinued units are usually still repairable. We rebuild the curb and flashing and reseal the glazing rather than default to a replacement unit — full detail on the skylight repair page.

How the repair runs

Three visits' worth of work, usually in one.

  1. 01

    Inspect, scan, diagnose

    We walk the roof and check the attic side. Where the entry point isn't obvious, an infrared scan maps trapped moisture so we repair the cause rather than the stain. You get photographs and a fixed written price before anything is touched.

  2. 02

    Repair with matched material

    Failed courses replaced, nailing corrected, flashing rebuilt, boots and vents renewed. Shingle line and colour matched where still manufactured. Where decking has softened, it comes out first.

  3. 03

    Test, photograph, warrant

    We water-test the repair, photograph the finished work from the roof, and issue the warranty document. If the leak returns within the term, we come back at no charge.

The honest answer

When a shingle roof genuinely needs replacing — and when it doesn't.

Age alone doesn't decide it. The failure pattern does.

Repair is the right call when damage is isolated to one slope or one detail, the rest of the field still has granule cover and flexible tabs, and the deck underneath is sound. A wind-lifted course on a twelve-year-old roof is a repair, full stop.

Replacement is warranted when failures appear in several unrelated places at once, when tabs are brittle and shattering across the whole field, when granule loss has exposed the mat over large areas, or when the sheathing has lost structural integrity.

We price both when both are genuinely on the table, and we'll tell you which one we'd choose if it were our own house.

Shingle roof with skylights meeting a slate-profile section on a Richmond Hill property

Shingle repair questions

Answered the way we'd answer on the roof.

How much does shingle roof repair cost in Richmond Hill?

It depends on access, the number of courses involved and whether flashing or decking work is needed. A localised repair — a lifted course, a cracked plumbing boot, a section of ridge cap — is a modest job and often finished in one visit. Costs rise sharply only when decking has rotted and needs cutting out. We give a fixed written price after an inspection rather than a guess over the phone, because a fixed number quoted sight-unseen has the guess built into it.

Can you match my existing shingles?

Where the line is still manufactured, yes — we match profile and colour exactly. Where it's discontinued, we source the closest available and place it on the least visible slope. Be aware that a perfect match to a roof that's weathered fifteen years isn't physically possible: sunlight fades granules, so new material always reads slightly brighter for the first season or two before it settles in.

Can shingles be repaired in winter?

Emergency work, yes — we secure the roof and stop water entry in any weather. Permanent shingle repair is trickier in cold: asphalt shingles become brittle and can crack when handled below roughly 4 °C, and the self-seal strip needs warmth to bond, so tabs are hand-sealed with roof cement instead. We'll do it when it can't wait, and tell you honestly when waiting for milder weather gives a better repair.

Will my insurance cover wind-damaged shingles?

Often, where the damage is sudden and storm-related rather than wear. What decides it is documentation: dated photographs, the pattern of damage, and a written report distinguishing wind damage from age-related deterioration. We document the roof on arrival and produce a report your adjuster can work from. We aren't insurance advisers, so confirm coverage details with your own insurer.

How many shingles can be replaced before it's a new roof?

There's no fixed number — it's about distribution rather than quantity. Fifty shingles on one slope after a windstorm is a repair. Ten shingles failing in six unrelated places across the roof is a roof at the end of its life, because it tells you the whole field has become brittle. That pattern is what we're reading during the inspection.

My roof is only a few years old and shingles blew off. Is that normal?

It's common in Richmond Hill, but it isn't normal. On a young roof it usually points to installation: nails set above the nailing strip, overdriven fasteners, or shingles laid late in the season that never sealed. That's worth establishing, because if the home is still within its builder or workmanship warranty the correction may not be yours to pay for. We document the nailing pattern as part of the inspection.

How long does a shingle repair last?

A correctly executed repair lasts as long as the surrounding roof does. The exception is a repair done without correcting the underlying cause — replacing blown-off tabs without fixing the fastening pattern that let them go means the same slope fails in the next windstorm. That's why we look at why it happened, not just what came off.

Do you repair roofs you didn't install?

Almost all of them. We're a repair company rather than an installer chasing replacements, so the overwhelming majority of the roofs we work on were put on by someone else — frequently the original subdivision builder.

Next step

Lost shingles? Let's look before the next storm.

We'll inspect the slope, establish whether it's wind or workmanship, and give you a written price for the repair.