
Rock and roll underpinning
43/100 WaterproofingIndex Score
2.9 km from Islington-City Centre West centre
Its own website describes below-grade water work
Last updated: By Below-Grade Records Desk
Rock Bottom Underpinning has not claimed this listing. The form reaches WaterproofingIndex.

Photograph published by Rock Bottom Underpinning on its Google Business Profile. WaterproofingIndex has not checked what it shows, and does not check any claim, offer or phone number printed inside an image.



Record
Rock Bottom Underpinning is a underpinning contractor working in Islington-City Centre West.
4.1 stars from 83 Google reviews. We file Rock Bottom Underpinning under Underpinning & Basement Lowering. Seven days of hours on record. 4 photos on this record. About 4 km from Islington-City Centre West. 62 of those 83 are 5-star.
1,639 words of Rock Bottom Underpinning's own pages were read. The below-grade wording found in them: basement waterproofing, underpinning, basement lowering, basement underpinning, basement walkout, basement walkouts.
Terms this site searched for, not the company's own sentences. WaterproofingIndex has not checked any licence, insurance, certification or warranty the company claims anywhere.
Method
63 / 100
This is the number every list on this site is ordered by. It is worked out the same way for all companies listed here, and the method page prints every point of it.
23 / 40
20 / 35
“Can Help You With At Rock Bottom Underpinning, our team has more than 35 years of experience in helping customers just like you tackle problems of all sizes. Base”
20 / 25
Read off this company's own pages on August 31, 2026. Each line is followed by the sentence it came from. WaterproofingIndex has not checked any of it against a registry, and for basement waterproofing in Ontario there is no registry to check.
“Can Help You With At Rock Bottom Underpinning, our team has more than 35 years of experience in helping customers just like you tackle problems of all sizes. Base”
“built our reputation on honest services our customers can trust. Our licensed and insured team strives to do their jobs with the utmost excellence”
“putation on honest services our customers can trust. Our licensed and insured team strives to do their jobs with the utmost excellence and professi”
Drawn from the Google reviews already stored on this record, against a fixed list of themes. Each one carries the reviewer's own words. These are what customers wrote, not a conclusion WaterproofingIndex reached, including the ones that are complaints.
“I contacted Dion at Rock Bottom to rescue me and my project from the mess I was in”
“to dig out my basement to a finished height of 8' 2" (gained over 2 ft of head room)”
“Riverdale underpinning with drain replacement, in-floor heating, sump pump and backwater valve”
“there were no unexpected surprises”
“The same skilled crew was on-site every day, supervised by a knowledgeable foreman”
“Customer service was also unresponsive when issues were raised”
Pillar weights: reviews 40, what it states about itself 35, website and record 25.
Method
5 of 5 signals present on this record.
Found on the company's own pages: basement waterproofing, underpinning, basement lowering.
Ontario licenses nobody for basement waterproofing, so there is no licence for this site to look up, and it does not verify insurance, WSIB clearance or any warranty a company offers. Nobody here has stood in one of these basements.
Method
Reviews
Highlights via Google reviews. Ratings are set by reviewers, not WaterproofingIndex.
“I had hired another contractor to do underpinning. This other contractor was unable to stay on schedule, wasn't equipped with the right tools, and wasn't giving me any confidence that they were doing the job properly. I contacted Dion at…”
Kieron· via Google reviews
“The best service I ever got. The owner of the company came in person before and after the job was done. Great customer service. The job was done fast and the best quality. Very impressive. I would recommend anyone who…”
Nadia· via Google reviews
“Underpinning my downtown Victorian home with Rock Bottom Underpinning was an exceptional experience. Underpinning a house can be incredibly stressful, and I was initially nervous about the process, but Dion and his crew quickly put my concerns to rest. They…”
Billy· via Google reviews
“I worked with Jamie and the Rock Bottom team to underpin the basement of my 100+ yr old in Leslieville. The overall goal was to dig out my basement to a finished height of 8' 2" (gained over 2 ft…”
Jeff· via Google reviews
“I regret choosing this company for my underpinning project. The timeline kept getting delayed and the quality of work was not what was promised. Customer service was also unresponsive when issues were raised. I expected much better professionalism.”
Jewel· via Google reviews
| Monday | 9 a.m.–5 p.m. |
|---|---|
| Tuesday | 9 a.m.–5 p.m. |
| Wednesday | 9 a.m.–5 p.m. |
| Thursday | 9 a.m.–5 p.m. |
| Friday | 9 a.m.–5 p.m. |
| Saturday | Closed |
| Sunday | Closed |
Contact
Coverage

43/100 WaterproofingIndex Score
2.9 km from Islington-City Centre West centre
Its own website describes below-grade water work

59/100 WaterproofingIndex Score
2.1 km from Islington-City Centre West centre
Its own website describes below-grade water work

65/100 WaterproofingIndex Score
2.1 km from Islington-City Centre West centre
Its own website describes below-grade water work