Roof Repair in Forest Hill
Slipped slate, cracked tile, copper that has finally worn through, and chimney flashing set into mortar that is no longer holding it. We repair with matched material.
Roof Repair in Forest Hill, what we fix.
Roof leak repairs
Emergency tarping
Storm damage repair
Shingle repairs & replacement
Flat roof repairs (EPDM, TPO, Mod-Bit)
Flashing repairs
Why Blue Knight finds it when others don't.
We trace first
Written reports
25+ years experience
No upsells
60-min emergency
Permanent repairs
We trace first
Every job starts with a full trace from interior stain back to the roof. We find the source before touching anything.
Written reports
You receive a written diagnostic report with photos, suitable for insurance, lenders, and property management files.
25+ years experience
Two and a half decades on GTA roofs means we've seen every failure mode across every building type in the region.
No upsells
We don't sell replacements when repairs are appropriate. Our invoice reflects what the building actually needs.
60-min emergency
Active leaks get same-day priority dispatch, around the clock, including nights and weekends.
Permanent repairs
We use manufacturer-matched materials and test the repair before we leave. No waiting for the next rain.
“We trace the leak from the stain back to the source. That's how leaks get fixed permanently.”
“We trace the leak from the stain back to the source. That's how leaks get fixed permanently.”
Rated 5 out of 5Blue Knight was, by far, the best. Responsive, ethical, totally professional — and their crew went above and beyond at no extra charge.
Rated 5 out of 5They installed a full new roof in one day. The crew worked around the house without us hardly knowing they were there.
Rated 5 out of 5I emailed at 4 a.m. and spoke with someone that same day. Estimate and completed work all within one day. Pricing was fair, work was excellent.
Blue Knight was, by far, the best. Responsive, ethical, totally professional — and their crew went above and beyond at no extra charge.
They installed a full new roof in one day. The crew worked around the house without us hardly knowing they were there.
I emailed at 4 a.m. and spoke with someone that same day. Estimate and completed work all within one day. Pricing was fair, work was excellent.
Luciano did not try to sell me a new roof. Appreciated the honesty — he showed up when he said he would.
We had a leak diagnosed by two other contractors who could not find the source. Blue Knight found it on the first visit and fixed it the same week.
Flat roof replacement on a commercial unit. Clean, fast, no surprises on the invoice. The crew left the site cleaner than they found it.
Called after a storm damaged our roof. Someone was on site within hours, tarped everything, and had us fully repaired before the next rain.
Had a slow basement leak for years. Every other company just caulked it. Blue Knight found the actual source and did a proper waterproofing job. No issues since.
Our neighbours recommended them for a valley repair. Small job, but they treated it like it mattered — showed up on time, matched the shingles perfectly, and charged exactly what they quoted.
Featured Projects.
Rooftops across the GTA.
From downtown Toronto to the 905 and beyond, one crew, one warranty, twenty-five years of GTA rooflines.
Service availability may vary. Call (647) 383-8664 to confirm coverage for your area.
Rooftops across the GTA.
From downtown Toronto to the 905 and beyond, one crew, one warranty, twenty-five years of GTA rooflines.
Service availability may vary. Call (647) 383-8664 to confirm coverage for your area.
Roof Repair questions for Forest Hill.
Localized repairs run from around $350 for straightforward work up to several thousand where matched slate or tile has to be sourced or where a chimney needs repointing alongside the flashing. We give an itemized written price after the diagnosis, and it names the material specifically rather than describing a category.
Sometimes, and the diagnostic question is what is holding the rest on. Slate itself commonly outlasts the nails securing it, so a roof shedding slates in ones and twos across different elevations is usually reporting nail fatigue across the whole covering, which is a different and larger conversation from a single slipped piece near a valley.
Yes. Copper on these houses is frequently still serviceable at eighty or ninety years, and where it has worn through at a specific point a targeted repair is usually possible. New copper will not match the existing patina for years, which we flag before starting so the appearance is a decision rather than a surprise.
Usually, and it is a fairly common find here. A previous repair that substituted asphalt for slate is both visually obvious and technically poor, because the two materials have different thicknesses and shed water differently at the junction. We can generally restore the affected area with matched slate and correct the detailing where they meet.
Always, and on heritage property the estimate specifies the exact material: slate grade and source, cedar species, or clay tile profile. That removes the ambiguity about what is actually being installed, which on a house of this value is worth more than a lower headline number.
Yes, on every job as standard, with dated photographs and the failure described by mechanism. On these properties that record is also useful at resale, because a buyer's inspector confronted with an eighty year old slate roof will otherwise be guessing about what has been done to it.
Roof repair in Forest Hill is mostly about two things: sourcing and interfaces. On the sourcing side, a slipped slate or a cracked tile is a small job made complicated by the need for stock that matches what is already on the roof in colour, thickness, and weathering. We would rather delay a repair by a week to get that right than complete it quickly with something that will stand out permanently.
On the interface side, the failure is usually not the roof covering at all. It is counter flashing set into a mortar joint on a chimney or parapet, and the mortar has deteriorated to the point where it no longer holds the metal. Reseating flashing into failing mortar produces a repair that lasts a season, which is why the fix here frequently involves repointing the affected courses first.
Sourcing Matched Material
Getting the material right is most of the job on a Forest Hill repair. Slate varies by quarry in colour, thickness, and how it weathers over decades. Clay tile varies by profile and manufacturers discontinue profiles. Cedar varies by species and by whether it was sawn or split.
Where an exact match cannot be sourced we tell you before the work starts. The usual answer is to salvage sound material from a rear or side elevation for the street facing repair and place the closest substitute where it is not visible, which preserves the appearance of the building at the cost of a slightly longer job.
The Masonry Interface
The most common leak we trace on these houses starts at a chimney or parapet rather than on the roof. Counter flashing was set into a mortar joint when the house was built, and after eighty or ninety years the mortar around it has deteriorated enough that it no longer grips the metal or seals against it.
The consequence for the repair is that metalwork alone will not hold. The affected courses need repointing so the flashing has sound mortar to seat into, which means the job spans two trades. Quoting only the flashing produces a repair that fails within a season, and we would rather explain the full scope up front than come back.
We also cover nearby cities.
Ready to schedule your estimate?
We come to you, assess the roof, and give you a written quote. You are not obliged to proceed. Most estimates completed same week.