65/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.6★ from 31 Google reviews, listed on Google as “Window cleaning service”.
Best Window Cleaners in Thunder Bay, ON (2026)
11 window cleaners ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Thunder Bay: Sleeping Giant Cleaning Services, CR Score 65/100; 4.6★ from 31 Google reviews; open 24/7.
- 7
Best for emergencies (open 24/7): Clean Slate Projects, posts 24/7 hours; ranked #7 of 11.
- 4
Most-reviewed: Klix Services, 79 Google reviews at 5.0★, the most of 11 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
11 Thunder Bay window cleaners are ranked here by CR Score, from ten published factors. 2 are open 24/7, 7 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 5.0★ across 11 rated businesses.
Top 10 window cleaners in Thunder Bay at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sleeping Giant Cleaning Services | 65 | 4.6★ (31) | Thunder Bay | 24/7 | Overall |
| 2 | Gomes Window Cleaning Thunder Bay | 64 | 5.0★ (52) | Thunder Bay | Sat | — |
| 3 | Exterior Experts RJF | 62 | 5.0★ (14) | Thunder Bay | Sat · Sun · Evenings | — |
| 4 | Klix Services | 61 | 5.0★ (79) | Thunder Bay | Sat · Sun · Evenings | Most reviews |
| 5 | Ace of Trades - Building Maintenance and Cleaning Services | 61 | 5.0★ (8) | Thunder Bay | Sat · Sun · Evenings | — |
| 6 | Clearview Window Cleaning Tbay | 60 | 5.0★ (29) | Thunder Bay | — | — |
| 7 | Clean Slate Projects | 58 | 5.0★ (3) | Thunder Bay | 24/7 | Emergencies |
| 8 | RAS Facility Services | 57 | 4.0★ (18) | Thunder Bay | — | — |
| 9 | Clearview Window Cleaning | 57 | 5.0★ (9) | Thunder Bay | — | — |
| 10 | Classic Window Cleaning | 57 | 5.0★ (8) | Thunder Bay | — | — |
The 11 best window cleaners in Thunder Bay, 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.
Based in Thunder Bay
64/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
62/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
61/100CR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 79 Google reviews, the most in Thunder Bay.
Based in Thunder Bay
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.0★ from 18 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
57/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Window cleaning service”.
Based in Thunder Bay
56/100CR ScoreRanked #11 because of its Google rating and review volume: 5.0★ from 27 Google reviews.
Also serving Thunder Bay
6 more window cleaners within 24 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| All Star Window Cleaning | In Thunder Bay | |
| Heritage Home and Exterior Care Thunder Bay | 5.0★ (7) | In Thunder Bay |
| Northwest Cleaning Services | In Thunder Bay | |
| PeerPressure Home&Auto Cleaning | 5.0★ (9) | In Thunder Bay |
| STS Highrise Window Cleaning | In Thunder Bay | |
| Wash YQT | 5.0★ (26) | In Thunder Bay |
How we ranked Thunder Bay window cleaners
We scored 11 Thunder Bay window cleaners 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 November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Thunder Bay data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Window cleaners in Thunder Bay: frequently asked questions
Who is the best window cleaner in Thunder Bay?
By CR Score, the highest-ranked window cleaner in Thunder Bay, ON is Sleeping Giant Cleaning Services with a CR Score of 65/100. It has 4.6★ from 31 Google reviews. It is open 24/7. Gomes Window Cleaning Thunder Bay (#2) and Exterior Experts RJF (#3) follow. We ranked 11 window cleaners on ten factors, last updated November 3, 2026.
How many window cleaners are there in Thunder Bay?
ContractorsRanked ranks 11 window cleaners serving Thunder Bay, ON. 11 of them are based in Thunder Bay; the rest serve it from nearby towns. Another 6 within 24 km are listed but not ranked yet. Counts are as of November 2026.
Which window cleaners in Thunder Bay are open 24/7?
2 ranked window cleaners in Thunder Bay post 24/7 hours. The highest-ranked are Sleeping Giant Cleaning Services (#1) and Clean Slate Projects (#7). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which window cleaners in Thunder Bay work on weekends?
7 of 11 ranked window cleaners post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are Sleeping Giant Cleaning Services (#1), Gomes Window Cleaning Thunder Bay (#2) and Exterior Experts RJF (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Thunder Bay window cleaners have?
The median Google rating among 11 rated window cleaners in Thunder Bay is 5.0★, with a median of 18 reviews. Klix Services has the most, 79 reviews, and ranks #4. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank window cleaners?
Each window cleaner 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 cleaners outside Thunder Bay count in this ranking?
Yes, if they are within 24 km of the Thunder Bay city centre, our service radius for window cleaners. 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.
Can window cleaners pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Thunder Bay
- November 2026: CR Scores recalculated for 11 window cleaners serving Thunder Bay.
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