Thornhill roofers since 1986
Roofing Contractor in Thornhill
Roof repair, roof replacement, skylights and eavestroughs for Thornhill homes on both the Vaughan and Markham sides of Yonge Street.
★★★★★ 5.0 on Google (75 reviews) · 4.9 on HomeStars (175 reviews)
Since 1986
Family-run by the Spiros family
25,000+ installs
Roofs and exteriors across the GTA
265+ Reviews
5.0 Google · 4.9 HomeStars
100% Canadian
Local crew, no call centre
Local roofing in Thornhill
Side-splits, skylights and older roofs
Thornhill has a lot of 1960s and 70s side-splits and backsplits in Royal Orchard, Bayview Glen and around Bathurst and Centre. Many have skylights added in the 80s and 90s, and those skylights are now one of the most common leak points we find. When we replace a roof, we look hard at every skylight and usually recommend replacing old units at the same time.
In Old Thornhill along Yonge, some streets fall inside heritage conservation districts. If you’re changing the look or material of the roof there, check with the city first, and we’ll help you with what they ask for.
- Skylight replacement with new flashing
- Side-split and backsplit roofs
- Roof repair and full replacement
- Eavestrough, soffit and fascia
What we do
Roofing services in Thornhill
Residential and commercial work, quoted in writing.
Roof repair
Leaks, lifted or missing shingles, failed flashing at chimneys and vents, storm and ice-dam damage. We find where the water is getting in before we price the fix.
Roof replacement
Tear-off to the deck, ice and water shield at the eaves and valleys, new underlayment, vents and shingles, and a cleaned-up yard.
Flat roofing
Modified bitumen roofs and flat-roof repairs for rear additions, garages, semis and commercial buildings.
Eavestroughs
Seamless aluminum eavestrough and downspouts, repairs, cleaning and leaf guards.
Skylights
Skylight replacement and leak repair, with new flashing so the unit sits tight to the roof.
Soffit and fascia
Aluminum soffit and fascia that keeps the attic venting and protects the roof edge from rot.
Why Spiros
Why homeowners and businesses choose us
Family-run since 1986
The family started the company in 1986 and still runs every job. You deal with the people who own the business.
25,000+ roofs and exteriors
Four decades of work across Toronto and York Region, from custom homes and estates to commercial buildings.
Trusted on landmark projects
We re-roofed several buildings at Canada’s Wonderland and roof new custom homes for builders across York Region.
Clear written quotes
Scope, materials and price in writing before work starts. Reviewers regularly mention clear, fair pricing.
On schedule, clean site
Customers mention crews arriving on the date promised and leaving the property spotless.
265+ Reviews
5.0 Google · 4.9 HomeStars
How it works
How a roofing job runs
01
Call or book online
Tell us what you’re seeing: a leak, missing shingles, an old roof. We book a time that suits you.
02
Inspection
We check the roof, flashing, vents and eavestroughs, look in the attic where we can, and take photos.
03
Written quote
You get the scope, materials and price in writing and time to think it over.
04
The job and clean-up
We protect the house and yard, do the work, and clean the site before we leave.
Service area
Neighbourhoods we cover in Thornhill
Thornhill Woods, Patterson, Royal Orchard, Bayview Glen, Uplands, Old Thornhill, Grandview and Thornhill’s Markham side east of Yonge.
We also work in:
Questions
Thornhill roofing questions
If the skylight is more than 20 years old, usually yes. Replacing it later means cutting into the new roof, and old skylights are a common leak point.
Usually not for a like-for-like reshingle. Some Old Thornhill properties are in heritage districts where material changes need approval.
Sometimes. If the unit is sound and the leak is in the flashing, we can re-flash it. If the seal between the glass has failed, the unit needs replacing.
Yes, both sides of Yonge Street.
Reviewed by the Spiros Aluminum & Roofing family team, roofing in the GTA since 1986. Have another question? See our Roofing FAQ.
Need a roofer in Thornhill?
Call the family team at 416-286-7759 or send us a few details and we’ll book an inspection.