
Slate Roofs in Toronto
We replace broken and slipped slates, renew worn flashings and help you keep an older slate roof sound for as long as repair makes sense.
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- Roofing and Roof Repairs
- Foundation Repairs
- Masonry and Interlock
- Serving Toronto
Slate Roofs
Keeping an Older Slate Roof Sound Through Toronto Winters
Many older Toronto houses still carry their original natural slate. The stone itself is very durable, but the parts around it wear out first: the nails that hold each slate, the flashings at valleys and walls, and the ridge details. When a nail fails, a slate slips or drops and water can reach the boards underneath. Toronto Roofing & Masonry replaces broken and slipped slates individually, so the rest of the roof is left undisturbed.
Freeze-thaw cycles, ice dams at the eaves and heavy snow loads put steady pressure on a slate roof, and a small gap left through one winter can mean a damp ceiling by spring. We look at the whole roof, not only the slates you can see from the street, and explain whether repairs will keep it going or whether replacement has become the better option for your home.


What's included
What Our Slate Roof Work Covers
What the work covers, explained to you before anything starts.
- Replacing cracked, broken or missing slates with slates matched as closely as possible to the existing roof.
- Refixing slipped slates securely so they sit back in line with the courses around them.
- Renewing worn flashings at valleys, walls, dormers and chimneys, where slate roofs most often let water in.
- Repairing ridge and hip details so the top of the roof sheds water and stays tight in high winds.
- Checking the roof boards and underlayment beneath any damaged area before new slates go back on.
- A clear assessment of when patching no longer makes sense and a replacement roof is the better choice.
Slates Slipping or Cracking on Your Roof?
Tell us about your slate roofs job and we will arrange a time to look at it, anywhere in Toronto.

Why choose us
What You Get from Our Approach to Slate Roofs
Repair Considered Before Replacement
We start by asking if your slate roof can be repaired, because replacing only the slates that have failed keeps far more of the original roof in place.
Slates Matched to Your Roof
We look for replacement slates close in colour, size and thickness to yours, so repairs blend in and sit flat with the courses around them.
Flashings Treated as Part of the Job
Many slate roof leaks come from tired flashings rather than the slate, so we check valleys, walls and chimney junctions while we are on the roof.
A Plain View on When to Replace
If the nails or boards are failing across the whole roof, we explain that plainly and price each option for you before anything is agreed.
About us
About Toronto Roofing & Masonry
Toronto Roofing & Masonry carries out roofing, foundation and masonry work for homes across Toronto. We look at what is causing the problem before suggesting a fix, explain the options for your home and give you an estimate before any work starts.

An estimate first
Before any work starts
Pricing
What Shapes the Cost of Slate Roof Work
Every slate roof is different, so your estimate depends on factors like these.
- How many slates are broken, slipped or missing
- The availability of slates that match your existing roof
- The condition of flashings at valleys, walls and chimneys
- The height and pitch of the roof and how safely it can be reached
- Whether the boards or underlayment beneath need repair

The work
How We Repair a Slate Roof
The main stages of the job, from the first look to the final check.
Roof Assessment
We look closely at the slates, nails, flashings and ridge, and note where water is getting in or is likely to soon.
Options and Estimate
We explain what repair would involve, when replacement would make more sense, and give you an estimate before any work is scheduled.
Careful Slate Repairs
Damaged slates come out without disturbing their neighbours, new ones are fixed in line, and worn flashings are renewed.
Completion Review
We clear the site, then review the completed work with you and confirm everything has been done as agreed.
FAQs
Slate Roof Questions from Toronto Homeowners
Can a slate roof be repaired, or does it need replacing?
Why do slates slip out of place?
Will new slates match my existing roof?
Should I go up on my slate roof to check it myself?
Does a leak always mean a slate is broken?
Still Have a Question?
If your question is not answered here, get in touch and we will discuss it with you.
Get in TouchAreas we cover
Slate Roof Repairs across Toronto
We carry out slate roofs on homes across Toronto, including the neighbourhoods below. If you are nearby, call to ask.
Toronto neighbourhoods
- Rosedale
- Forest Hill
- The Beaches
- High Park
- Leaside
- Lawrence Park
- Leslieville
- King West
- The Annex
- Bloor West Village
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