64/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 154 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 154 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 7 AM–5 PM · Sun 10 AM–3 PM
Best Foundation Repair Companies in Guelph, ON (2026)
264 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Guelph: Wetness Protection, CR Score 64/100; 5.0★ from 154 Google reviews; open 7 days a week.
- 5
Best for emergencies (open 24/7): S & Sons Waterproofing, posts 24/7 hours; ranked #5 of 264.
- 4
Most-reviewed: The Crack Specialists, 467 Google reviews at 5.0★, the most of 264 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
264 Guelph foundation repair companies are ranked here by CR Score, from ten published factors. 96 are open 24/7, 197 open Saturdays and 146 open Sundays, based on posted hours. The median Google rating is 5.0★ across 264 rated businesses.
Top 10 foundation repair companies in Guelph at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Wetness Protection | 64 | 5.0★ (154) | Norfolk County, 5 km away | Sat · Sun | Overall |
| 2 | Aquamaster Basement Waterproofing Cambridge | 61 | 5.0★ (108) | Cambridge, 23 km away | Sat · Sun · Evenings | — |
| 3 | Canada Waterproofers | 61 | 5.0★ (316) | Mississauga, 49 km away | Sat · Sun · Evenings | — |
| 4 | The Crack Specialists | 61 | 5.0★ (467) | Brant, 24 km away | — | Most reviews |
| 5 | S & Sons Waterproofing | 61 | 4.8★ (49) | Kitchener, 22 km away | 24/7 | Emergencies |
| 6 | Aquamaster Basement Waterproofing Mississauga | 60 | 5.0★ (123) | Mississauga, 52 km away | 24/7 | — |
| 7 | ROOTERWORX | 60 | 5.0★ (121) | Mississauga, 53 km away | 24/7 | — |
| 8 | RCC Waterproofing Mississauga | 60 | 4.9★ (121) | Mississauga, 50 km away | 24/7 | — |
| 9 | Direct Basement Waterproofing Toronto | 60 | 5.0★ (271) | Toronto, 56 km away | Sat · Sun · Evenings | — |
| 10 | Aquatech Basement Waterproofing Mississauga | 60 | 5.0★ (109) | Mississauga, 54 km away | 24/7 | — |
The 264 best foundation repair companies in Guelph, 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 Cambridge, 23 km away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 108 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 108 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 246 Victoria Ave, Cambridge, ON N1S 3W5
Based in Mississauga, 49 km away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 316 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 316 Google reviews
- Hours
- Mon–Sat 7 AM–9 PM · Sun 10 AM–4 PM
- Address
- 3410 Semenyk Ct #9, Mississauga, ON L5C 4P8
Based in Brant, 24 km away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 467 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 467 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 1600 King St N #19, St. Jacobs, ON N0B 2N0
Based in Kitchener, 22 km away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 49 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 49 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Mississauga, 52 km away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 123 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 123 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1247 Cloverbrae Crescent, Mississauga, ON L5H 2Z6
#7 ROOTERWORX
Based in Mississauga, 53 km away
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 121 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 121 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 34 Queen St W unit 4, Mississauga, ON L5H 1L4
Based in Mississauga, 50 km away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 121 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 90 Burnhamthorpe Rd W #1400, Mississauga, ON L5B 0H9
Based in Toronto, 56 km away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 271 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 271 Google reviews
- Hours
- Mon–Fri 8 AM–9 PM · Sat 8 AM–7 PM · Sun 8 AM–8 PM
- Address
- 4 Faversham Crescent, Toronto, ON M9C 3X4
Based in Mississauga, 54 km away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 109 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 155 Oakes Dr, Mississauga, ON L5G 3M2
Based in Concord, 60 km away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 180 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 180 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7140 Islington Ave, Woodbridge, ON L4L 1V9
Based in Kitchener, 21 km away
60/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 121 Google reviews.
- 5.0★ from 121 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 36 Prince Albert Blvd, Kitchener, ON N2H 0B4
Based in Guelph
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 38 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 38 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat 8 AM–3 PM · Sun closed
Based in Mississauga, 52 km away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 161 Google reviews
- Hours
- Mon–Sat 7 AM–9 PM · Sun 8 AM–9 PM
- Address
- 3453 Cedar Creek Dr, Mississauga, ON L4Y 2Y2
Based in Brampton, 31 km away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 64 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 64 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun 9 AM–5 PM
Based in Mississauga, 51 km away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 70 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1251-A Kamato Rd, Mississauga, ON L4W 2M2
Based in Hamilton, 51 km away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 143 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 13 Delena Ave S, Hamilton, ON L8H 1B7
Based in Norfolk County, 45 km away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Hamilton, 45 km away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 107 Google reviews
- Hours
- Mon 7 AM–11:30 PM · Tue 7 AM–10 PM · Wed 8 AM–9 PM · Thu–Fri 8 AM–10 PM · Sat 8 AM–9 PM · Sun 7 AM–7 PM
- Address
- 180 James St S Suite 204, Hamilton, ON L8P 4V1
Based in Mississauga, 55 km away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 166 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 166 Google reviews
- Hours
- Mon–Fri 7 AM–8:30 PM · Sat 8 AM–6 PM · Sun 10 AM–3 PM
- Address
- 3200 Wharton Way, Mississauga, ON L4X 2C1
Based in Brantford, 49 km away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 55 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 33 Gunn Ave, Brantford, ON N3T 0S3
Based in North York, 61 km away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 245 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 245 Google reviews
- Hours
- Mon–Sun 6 AM–11 PM
- Address
- 60 Millwick Dr, North York, ON M9L 1Y3
Based in Hamilton, 52 km away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 132 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 132 Google reviews
- Hours
- Mon–Tue 7 AM–9 PM · Wed 9 AM–9 PM · Thu–Sat 7 AM–9 PM · Sun 7:30 AM–9 PM
- Address
- 7 Village Dr, Hamilton, ON L8E 3M7
Based in Waterloo, 22 km away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 66 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 66 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
- Address
- 55 Northfield Dr E #275, Waterloo, ON N2K 3T6
Based in Hamilton, 45 km away
59/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 82 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 82 Google reviews
- Hours
- Mon 8 AM–8 PM · Tue–Fri 8 AM–10 PM · Sat 8 AM–7 PM · Sun 7 AM–8 PM
- Address
- 21 King St W 5th Floor, Hamilton, ON L8P 4W7
Foundation repair companies 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 264 ranked foundation repair companies here; the rest are on their profiles.
Also serving Guelph
20 more foundation repair companies within 64 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
How much do foundation repair companies cost in Guelph?
US national ranges converted to CAD, not adjusted for Guelph. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Foundation repair | CA$3,130 | CA$7,270 | CA$11,430 | Per project: typical range of customer-reported repairs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
How we ranked Guelph foundation repair companies
We scored 264 Guelph foundation repair companies 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.
| Factor | Weight | Computed from | In Guelph 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 |
Foundation repair companies in Guelph: frequently asked questions
Who is the best foundation repair company in Guelph?
By CR Score, the highest-ranked foundation repair company in Guelph, ON is Wetness Protection with a CR Score of 64/100. It has 5.0★ from 154 Google reviews. It is open 7 days a week. Aquamaster Basement Waterproofing Cambridge (#2) and Canada Waterproofers (#3) follow. We ranked 264 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in Guelph?
ContractorsRanked ranks 264 foundation repair companies serving Guelph, ON. 1 of them is based in Guelph; 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 foundation repair companies in Guelph are open 24/7?
96 ranked foundation repair companies in Guelph post 24/7 hours. The highest-ranked are S & Sons Waterproofing (#5), Aquamaster Basement Waterproofing Mississauga (#6) and ROOTERWORX (#7). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Guelph work on weekends?
197 of 264 ranked foundation repair companies post Saturday hours and 146 post Sunday hours. The highest-ranked open Saturdays are Wetness Protection (#1), Aquamaster Basement Waterproofing Cambridge (#2) and Canada Waterproofers (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Guelph?
Foundation repair typically costs CA$3,130 to CA$11,430, with CA$7,270 typical (Per project: typical range of customer-reported repairs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Guelph. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Guelph foundation repair companies have?
The median Google rating among 264 rated foundation repair companies in Guelph is 5.0★, with a median of 29 reviews. The Crack Specialists has the most, 467 reviews, and ranks #4. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank foundation repair companies?
Each foundation repair company 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 foundation repair companies outside Guelph count in this ranking?
Yes, if they are within 64 km of the Guelph city centre, our service radius for foundation repair companies. 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 Guelph
- October 2026: CR Scores recalculated for 264 foundation repair companies serving Guelph.
More foundation repair companies and Guelph pages
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