Skip to content
ContractorsRanked

Best Window Installers in London, ON (2026)

81 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in London: Brookstone Windows & Doors, CR Score 65/100; 4.7★ from 442 Google reviews; open 7 days a week.

  2. 2

    Best for emergencies (open 24/7): Accurate Window Cleaners, posts 24/7 hours; ranked #2 of 81.

  3. 5

    Most-reviewed: Heritage Renovations, 298 Google reviews at 4.4★, the most of 81 ranked after Brookstone Windows & Doors; ranked #5.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

81 London window installers are ranked here by CR Score, from ten published factors. 8 are open 24/7, 30 open Saturdays and 13 open Sundays, based on posted hours. The median Google rating is 4.8★ across 81 rated businesses.

Top 10 window installers in London at a glance

Top 10 window installers in London at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Brookstone Windows & Doors654.7★ (442)LondonSat · Sun · EveningsOverall
2Accurate Window Cleaners634.9★ (213)London24/7Emergencies
3Douglas Window & Door Inc.624.9★ (271)London——
4Blake Exteriors Window and Door614.8★ (251)London——
5Heritage Renovations614.4★ (298)LondonSatMost reviews
6Jacob's Crystal Clear Window Cleaning615.0★ (81)London24/7—
7Riverbend Windows & Doors Inc.604.9★ (123)London——
8Glass Canada604.6★ (206)London——
9Forest City Window & Door Ltd594.7★ (153)London——
10Banman Windows & Doors595.0★ (31)LondonSat · Evenings—

The 81 best window installers in London, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  5. #5 Heritage Renovations

    Based in London

    61/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.4★ from 298 Google reviews, listed on Google as “Window installation service”.

    • 4.4★ from 298 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat 10 AM–2 PM · Sun closed
    Address
    583 Exeter Rd, London, ON N6E 2Z2
    View profile for Heritage Renovations(519) 652-1575

  8. #8 Glass Canada

    Based in London

    60/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.6★ from 206 Google reviews, listed on Google as “Window installation service”.

    • 4.6★ from 206 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    330 Exeter Rd A, London, ON N6L 1A3
    View profile for Glass Canada(519) 642-4100

  10. #10 Banman Windows & Doors

    Based in London

    59/100CR Score

    Ranked #10 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Window installation service”.

    • 5.0★ from 31 Google reviews
    Hours
    Mon–Thu 9 AM–7 PM · Fri 9 AM–4 PM · Sat 10 AM–4 PM · Sun closed
    Address
    435 Springbank Dr, London, ON N6J 1H2
    View profile for Banman Windows & Doors(519) 902-9003

  11. #11 Aluminum Associates

    Based in London

    59/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.5★ from 169 Google reviews, listed on Google as “Window installation service”.

    • 4.5★ from 169 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1801 Trafalgar St, London, ON N5W 1X7
    View profile for Aluminum Associates(519) 453-6400

  13. #13 York Exteriors

    Based in London

    58/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Window installation service”.

    • 5.0★ from 40 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    1232 York St, London, ON N5W 2V2
    View profile for York Exteriors(519) 860-5665

  14. #14 Direct Impact Auto Glass

    Based in London

    58/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.2★ from 54 Google reviews, listed on Google as “Window installation service”.

    • 4.2★ from 54 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
    Address
    located within Storage Mart, 1020 Wonderland Rd S #2246, London, ON N6K 3S4
    View profile for Direct Impact Auto Glass(226) 271-7394

  17. #17 Homecastle

    Based in London

    57/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.2★ from 39 Google reviews, listed on Google as “Window installation service”.

    • 4.2★ from 39 Google reviews
    Hours
    Mon–Fri 8 AM–5:30 PM · Sat 10 AM–2 PM · Sun closed
    Address
    535 First St, London, ON N5V 1Z3
    View profile for Homecastle(519) 659-3550

  19. #19 A1 Unique Installations

    Based in St. Thomas, 23 km away

    57/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.7★ from 54 Google reviews, listed on Google as “Window installation service”.

    • 4.7★ from 54 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat 9 AM–12 PM · Sun closed
    Address
    16 Barrie Blvd #5, St Thomas, ON N5P 4B9
    View profile for A1 Unique Installations(519) 631-8183

Window installers ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 81 ranked window installers here; the rest are on their profiles.

window installers in London, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Windy Peaks Contracting and Renovation565.0★ (22)In London
27The Window & Door Centre Inc.564.8★ (29)In London
28DJM Brothers Windows and Doors564.9★ (17)14 km
29RCOR European Windows And Doors565.0★ (9)In London
30Four Seasons Sunrooms564.1★ (68)In London
31COSMIC RENOVATIONS555.0★ (15)In London
32Beaumart Aluminum Ltd554.4★ (28)In London
33Banman Windows & Doors St. Thomas555.0★ (6)In London
34McCallum Aluminum Ltd554.7★ (13)In London
35Linton Window & Door545.0★ (85)53 km
36Legendary Exteriors544.6★ (19)In London
37Speedy Glass Stratford544.7★ (86)46 km
38Distinct Windows & Doors544.9★ (60)43 km
39Lambton Window Pros545.0★ (30)46 km
40BASEMENT WINDOWS INSTALLATION CASA-fix544.8★ (24)45 km
41Stratford Glass & Lock Service534.6★ (63)48 km
421st Choice Home Solutions534.6★ (160)In London
43GP Home Solution Inc.535.0★ (4)In London
44Speedy Glass Woodstock Cedar534.4★ (77)43 km
45Home Building Products534.6★ (41)42 km
46RenoNation Contracting Inc.524.9★ (39)8 km
47MacFarlane Windows and Doors525.0★ (3)In London
48Hummingbird Window Cleaning/Eavestrough Cleaning Ontario525.0★ (5)12 km
49Pane Management Windows and Eaves525.0★ (7)In London
50Precise Renovating515.0★ (3)8 km

Also serving London

20 more window installers within 64 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked window installers serving London
BusinessGoogle ratingDistance
519 Painters4.9★ (315)In London
A Green Window & Blind Clng1.0★ (1)In London
Absolute Metal Roofing5.0★ (1)In London
All Good Property Cleaning5.0★ (44)In London
Bear Property Cleaning4.9★ (381)In London
Davinci Contractors Group Inc.4.6★ (57)In London
Great Blue Cleaning & Maintenance4.9★ (202)In London
HOM Construction Ltd5.0★ (10)In London
London Eavestrough and Siding4.9★ (380)In London
Mr. J's Windows and Eaves Cleaning Inc.3.0★ (2)In London
North London Roofing4.5★ (98)In London
Pro Home Contracting Inc.5.0★ (21)In London
RCC Waterproofing London4.5★ (20)In London
Skyview Windows Manufacturing Inc.3.5★ (2)In London
Sunningdale Home Improvements, Brick Repair, Eavestrough Installation, Exterior Renovations, Siding & Window Contractors5.0★ (1)In London
W D Dave Smith Renovations5.0★ (2)In London
Warmuz Construction Limited5.0★ (1)In London
Wayfarer Renovations5.0★ (45)In London
Window and Door Specialist5.0★ (2)In London
Yev Construction4.9★ (18)In London

How much do window installers cost in London?

US national ranges converted to CAD, not adjusted for London. Each row names its basis and the month we checked it.

How much do window installers cost in London?
JobLowTypicalHighBasisChecked
Window replacementCA$4,830CA$10,330CA$16,640Per project (several windows): typical range of customer-reported projects. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)October 2026

How we ranked London window installers

We scored 81 London window installers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn London data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Window installers in London: frequently asked questions

Who is the best window installer in London?

By CR Score, the highest-ranked window installer in London, ON is Brookstone Windows & Doors with a CR Score of 65/100. It has 4.7★ from 442 Google reviews. It is open 7 days a week. Accurate Window Cleaners (#2) and Douglas Window & Door Inc. (#3) follow. We ranked 81 window installers on ten factors, last updated October 22, 2026.

How many window installers are there in London?

ContractorsRanked ranks 81 window installers serving London, ON. 33 of them are based in London; the rest serve it from nearby towns. Another 20 within 64 km are listed but not ranked yet. Counts are as of October 2026.

Which window installers in London are open 24/7?

8 ranked window installers in London post 24/7 hours. The highest-ranked are Accurate Window Cleaners (#2), Jacob's Crystal Clear Window Cleaning (#6) and AllFix London Windows & Doors (#15). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which window installers in London work on weekends?

30 of 81 ranked window installers post Saturday hours and 13 post Sunday hours. The highest-ranked open Saturdays are Brookstone Windows & Doors (#1), Accurate Window Cleaners (#2) and Heritage Renovations (#5). Posted hours are office hours; crews may book weekend jobs separately.

How much does window replacement cost in London?

Window replacement typically costs CA$4,830 to CA$16,640, with CA$10,330 typical (Per project (several windows): typical range of customer-reported projects. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for London. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do London window installers have?

The median Google rating among 81 rated window installers in London is 4.8★, with a median of 28 reviews. Brookstone Windows & Doors has the most, 442 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank window installers?

Each window installer gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do window installers outside London count in this ranking?

Yes, if they are within 64 km of the London city centre, our service radius for window installers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for London

  1. October 2026: CR Scores recalculated for 81 window installers serving London.

More window installers and London pages

Other trades in London