Window & Door Installation in London, Ontario
Homes we work on in London
London has a mix of heritage homes, post-war neighbourhoods, and newer subdivisions. We install in all of them.
Heritage brick (1900s–1930s)
Old North, Old South, Wortley Village, parts of Old East
Original wood sashes were typically vinyl-replaced in the 1980s — those replacements are now end-of-life. Brick veneer condition around the openings is the main variable; we plan for hidden rot at the sill, capping, and weatherproofing scope in the quote.
Post-war ranch + side-split (1950s–1970s)
Westmount, Sherwood Forest, Glen Cairn, Cleardale
Original-spec aluminum or first-generation vinyl picture windows. Common patterns: rotted sills, missing flashing, weathered exterior trim — predictable conditions that we carry the trim materials and time to handle on site.
1980s–2000s subdivisions
Byron, Masonville, Oakridge, Hyde Park, parts of White Oaks
Mostly vinyl windows installed 1990s–2000s, hitting their 25–30 year replacement window now. Openings are typically dimensionally clean; condensation and seal-failure are the usual drivers, not framing.
Neighbourhoods we serve in London
From Old North and Wortley Village in the central core to Byron, Masonville, and Lambeth around the edges — plus the surrounding region within roughly 40 km.
Central London
- Old North
- Old South
- Old East
- Wortley Village
West London
- Byron
- Hyde Park
- Oakridge
- Lambeth
North London
- Masonville
- Sunningdale
- Stoneybrook
- Sherwood Forest
South London
- Westmount
- White Oaks
- Westminster
- Pond Mills
East London
- Highland
- Cleardale
- Glen Cairn
Surrounding Towns (within 40 km)
- St. Thomas
- Strathroy
- Woodstock
- Tillsonburg
- Ingersoll
- Dorchester
- Komoka
- Ilderton
- Lucan
- Exeter
- Mount Brydges
What we install for London homeowners
Replacement Windows
Vinyl, fibreglass, and aluminum frames. Casement, double-hung, single-slider, awning, fixed, bay/bow configurations. Low-E coatings, argon fill, foam-filled frames standard. Brick-to-brick or sash-pack replacement depending on opening condition.
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 London
London is our home base
We work the full city and the surrounding 40 km — from Old North and Wortley Village centrally to Byron, Masonville, Lambeth, and the rest. No half-day mobilization charge tacked onto your quote.
Local supplier, local install
Northstar's vinyl manufacturing plant is in St. Thomas, a short drive south of London. The windows you install go from local factory to local home, with short lead times and easy warranty service.
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.
How It Works
A straightforward process from first call to finished project.
Request a Quote
Tell us about your project. We'll be in touch shortly to set up an on-site visit.
On-Site Consultation
We visit your home, take measurements, discuss options, and provide a detailed written quote.
Professional Installation
Our crew handles the work — clean, efficient, and finished to a standard we stand behind.
Final Walkthrough
We walk through the completed work with you, answer any questions, and make sure you're satisfied.
Manufacturers we install
Multi-manufacturer dealer — the right product for the house and the budget, not whatever has the best dealer rebate.
Common questions from London homeowners
Window or door project in London?
Free no-obligation site visit. Written quote, fully insured, one point of contact.
Tell me about your London project
I'll come measure in person, talk through what makes sense for your house, and follow up with a detailed written quote.