Window & Door Installation in St. Thomas, Ontario
Homes we work on in St. Thomas
St. Thomas has a mix of older heritage homes and newer subdivisions. We install in both.
Heritage homes (1880s–1920s)
Courthouse District, Rosebery Place, Gladstone Street, Wellington Street
Older brick and frame homes around the Courthouse District. Most have mid-century or 1980s replacement windows now reaching end-of-life. Sash-pack replacement preserves the brick course where possible; brick-to-brick when the casing has gone.
Newer south-end subdivisions (2000s–present)
Miller's Pond, Eagle Ridge, Shaw Valley, Harvest Run, Orchard Park South
Modern Energy Star–spec single-family builds. Original windows are usually still in factory warranty. Selective upgrades, glass-pack swaps, and storm-damage replacements are the typical asks.
North-end and corridor to London
Lynhurst Heights, Talbotville Meadows
Newer subdivisions north of the city, mostly post-2015 builds. We cover this corridor as part of our regular service area.
Neighbourhoods we serve in St. Thomas
From the heritage Courthouse District south to the newer subdivisions, and north to the corridor heading into London.
Heritage core
- Courthouse District
- Rosebery Place
- Gladstone Street
- Wellington Street
- Downtown core
Newer subdivisions (south & east)
- Orchard Park South
- Harvest Run
- Miller's Pond
- Shaw Valley
- Eagle Ridge
North end / corridor to London
- Lynhurst Heights
- Lynhurst
- Talbotville Meadows
What we install for St. Thomas homeowners
Replacement Windows
Vinyl, fibreglass, and aluminum frames. Heritage-appropriate grille and muntin profiles for the older homes around the Courthouse District; modern frames sized for the newer subdivisions. Low-E coatings, argon fill, foam-filled frames standard.
Exterior Doors
Entry doors (fibreglass and steel) and patio doors (sliding and swing). Multipoint locks, standard hardware tiers, colour-wrap finish options for matching new windows to existing trim.
Siding, Soffit & Fascia
Vinyl, polymer, fibre cement (Hardie), and engineered wood (LP) siding. Aluminum trim and coil work. Often combined with a windows or doors project for a coordinated exterior refresh.
Why work with us in St. Thomas
St. Thomas is in our regular service area
No half-day mobilization charge tacked onto your quote. We measure on-site, quote in writing, and schedule install around your project — same as we would for any in-area job.
Local supplier, local install
Northstar's vinyl manufacturing plant is right here in St. Thomas. The windows you install go from the local factory floor to your house — short lead times and easy warranty service if needed.
One point of contact
Marko is on every site, from the first measure to the final cleanup. No call centre, no franchise upsell, one accountable point of contact from start to finish.
Fully insured + WSIB
Liability insurance and WSIB documentation provided on request before any work starts.
What happens when you call
The same four steps on every job, whether it's one door or the whole exterior.
- 1
Call, or send the form
We ask a few questions about the house and the job. If it's something we do, we book a visit.
- 2
The visit
We measure, look at samples with you, and talk through the options that make sense for your house.
- 3
A written proposal
A fixed price with the scope spelled out, usually within a couple of days. Read it on your own time. If you want to go ahead, you tell us. We don't chase.
- 4
The work, and a check-in after
We schedule the install, do the work, and walk it with you at the end. We come back in the first year to check on it.
Manufacturers we install
Multi-manufacturer dealer — the right product for the house and the budget, not whatever has the best dealer rebate.
- VDK Windows & Doors
- Novatech Doors
- Westlake Royal Building Products
- Northstar Windows & Doors
- James Hardie
- Marvin Windows & Doors
Common questions from St. Thomas homeowners
Window or door project in St. Thomas?
Free no-obligation site visit. Written quote, fully insured, one point of contact.
Tell me about your St. Thomas project
I'll come measure in person, talk through what makes sense for your house, and follow up with a detailed written quote.