20 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Petrolia: Wet 2 Dry Basement Waterproofing, CR Score 60/100; 5.0★ from 121 Google reviews; open 24/7.
Best for emergencies (open 24/7): SuperDry Basement Waterproofing, posts 24/7 hours; ranked #3 of 20.
Most-reviewed: Advanced Basement Systems, 510 Google reviews at 4.9★, the most of 20 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
20 Petrolia foundation repair companies are ranked here by CR Score, from ten published factors. 9 are open 24/7, 11 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.9★ across 20 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Wet 2 Dry Basement Waterproofing | 60 | 5.0★ (121) | Clinton Township, 61 km away | 24/7 | Overall |
| 2 | Advanced Basement Systems | 58 | 4.9★ (510) | Chatham, 47 km away | — | Most reviews |
| 3 | SuperDry Basement Waterproofing | 57 | 5.0★ (33) | New Haven, 54 km away | 24/7 | Emergencies |
| 4 | WaterBGone - Safie Brothers Construction | 57 | 4.6★ (77) | New Baltimore, 59 km away | 24/7 | — |
| 5 | Quality 1st Basement Waterproofing | 57 | 5.0★ (33) | Clinton Township, 56 km away | 24/7 | — |
| 6 | Paul's Basement Waterproofing | 57 | 5.0★ (144) | Amherstburg, 60 km away | Sat | — |
| 7 | Wallace Basement Waterproofing | 56 | 5.0★ (6) | Port Huron, 29 km away | 24/7 | — |
| 8 | Miller Brothers Mini Excavation | 55 | 4.4★ (47) | Sarnia, 19 km away | — | — |
| 9 | Basement Boss | 54 | 4.6★ (14) | Sarnia, 9 km away | — | — |
| 10 | Blue Water Basement Waterproofing | 54 | 4.9★ (36) | New Baltimore, 40 km away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 121 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chatham, 47 km away
Ranked #2 because of its Google rating and review volume: 4.9★ from 510 Google reviews, the most in Petrolia.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Haven, 54 km away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Baltimore, 59 km away
Ranked #4 because of its Google rating and trade focus: 4.6★ from 77 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton Township, 56 km away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Amherstburg, 60 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Huron, 29 km away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 19 km away
Ranked #8 because of its Google rating and trade focus: 4.4★ from 47 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 9 km away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Baltimore, 40 km away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 36 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 62 km away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores, 63 km away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chatham, 52 km away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 10 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 18 km away
Ranked #14 because of its Google rating and availability: 5.0★ from 6 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 23 km away
Ranked #15 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton Township, 61 km away
Ranked #16 because of its Google rating and trade focus: 4.1★ from 45 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 19 km away
Ranked #17 because of its Google rating and trade focus: 2.7★ from 7 Google reviews, listed on Google as “Concrete contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lambton Shores, 56 km away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 52 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marysville, 32 km away
Ranked #19 because of its Google rating and trade focus: 4.3★ from 3 Google reviews, listed on Google as “Concrete contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Clinton Township, 59 km away
Ranked #20 because of its Google rating and trade focus: 3.9★ from 7 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
US national ranges converted to CAD, not adjusted for Petrolia. 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 |
We scored 20 Petrolia 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 Petrolia 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 |