Thornhill is where we're based — and where our reputation was built. Trusted by hundreds of Thornhill homeowners for roofing, insulation, and aluminum work.
Thornhill is home. It's where Ultimate Home Services started, where our crew lives, and where our reputation was built one roof at a time. From the mature trees and large lots of Thornhill Woods to the established subdivisions near Promenade Mall and the busy Yonge Street corridor, we've worked on virtually every style of home Thornhill has to offer.
Being local isn't just a marketing line for us — it means we know which neighbourhoods have the most mature tree canopy (and the moss problems that come with it), which streets have homes from the 1970s that are long overdue for a second or third roof, and which newer builds near Highway 7 are seeing premature shingle wear from inadequate attic ventilation. That local knowledge shows up in the quality of our work.
Many Thornhill homes were built in the 1970s through the 1990s, which means a large portion of the housing stock is on its second or third roof cycle. A full replacement with us includes tear-off, deck inspection, ice & water shield at all eaves and valleys, synthetic underlayment, and premium architectural shingles. We also do targeted repairs — missing shingles, flashing failures, and post-storm damage assessments — when a full replacement isn't warranted.
Thornhill winters bring sustained cold with regular freeze-thaw cycles. Proper attic insulation is the single best investment a homeowner can make for both comfort and roof longevity. We blow in cellulose insulation to R-50 (the current Ontario standard), which dramatically reduces heat loss, lowers your gas bill, and — critically — prevents the warm-attic conditions that cause ice dams to form along your eaves.
Thornhill's older homes often have original wood soffit and fascia that has been painted over multiple times and is quietly rotting from moisture infiltration. Replacing it with aluminum soffit and fascia is a permanent fix — no painting, no rot, no pest entry points. We also install seamless aluminum eavestroughs custom-formed to fit your roofline, handling spring snowmelt and summer storm runoff without sagging or leaking.
Thornhill straddles the border of Vaughan (City of Vaughan) and Markham (City of Markham / York Region), and different areas have subtly different microclimates. The heavily treed sections near Thornhill Community Centre and Pomona Mills Park create shading that promotes algae and moss growth on north-facing roof sections. We've done dozens of roofs in these areas and know exactly what to look for during our pre-job inspection.
The area also has a mix of older construction and 1990s-era homes where the original ice & water shield was minimal or non-existent. When we tear off those roofs, we often find staining and early rot at the eave line — the telltale sign of ice dam damage over many winters. Our replacement process corrects this permanently.
We're right here in Thornhill — same-day or next-day assessments are often available. Call us or use the online calculator to get a ballpark number in minutes.
Call 416-889-0629 Online Quote Calculator Open 7 days · 7AM–9PM