Last updated: By Below-Grade Records Desk
Cornerstone Waterproofing & Foundation Repair has not claimed this listing. The form reaches WaterproofingIndex.
Photograph published by Cornerstone Waterproofing & Foundation Repair 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
Among the basement waterproofing contractor businesses we hold for East York is Cornerstone Waterproofing & Foundation Repair.
5-star share: 100%. 5.0/5 across 9 reviews on Google. Category: Basement Waterproofing and Foundation Repair. Open hours listed every day. 4 photos on file. Its address is in East York, not merely inside a radius it will drive to.
3,028 words of Cornerstone Waterproofing & Foundation Repair's own pages were read. The below-grade wording found in them: basement waterproofing, waterproofing basement, waterproofing foundation, exterior waterproofing, wet basement, wet basements.
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
82 / 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.
30 / 40
27 / 35
“professional, expert service and peace-of-mind to Toronto homeowners since 2004. Need the full breakdown? See interior & exterior waterproofing servi”
25 / 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.
“professional, expert service and peace-of-mind to Toronto homeowners since 2004. Need the full breakdown? See interior & exterior waterproofing servi”
“rvices . Call 416-879-4593 Free Estimate Arranged at your convenience Licensed & Insured 20-Year Waterproofing Warranty WSIB compliant safety standa”
“ll 416-879-4593 Free Estimate Arranged at your convenience Licensed & Insured 20-Year Waterproofing Warranty WSIB compliant safety standards TSSA c”
“at your convenience Licensed & Insured 20-Year Waterproofing Warranty WSIB compliant safety standards TSSA certified contractor 5/5 HomeStars "C”
“at your convenience Licensed & Insured 20-Year Waterproofing Warranty WSIB compliant safety standards TSSA certified contractor 5/5 HomeStars "C”
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.
“We had a major leak and since the job was complete, not a drop of water”
“They underpinned our basement in summer 2017”
“my basement is now dry even during heavy rains”
“They finished ahead of schedule and did a great job”
“it was Cornerstone that suggested that it may be wise to simply flatten the floor”
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, waterproofing basement, waterproofing foundation.
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 recently hired Cornerstone for my basement, and I couldn't be happier with the results. Their team was professional, efficient, and the quality of their waterproofing work exceeded my expectations. No more leaks, and my basement is now dry even…”
Benjamin· via Google reviews
“I recently hired Corner Stone Waterproofing for a project, and I couldn't be more pleased with their services. From start to finish, they demonstrated the utmost professionalism and expertise in waterproofing. Their team was punctual, efficient, and left no mess…”
Ashley· via Google reviews
“My wife and I just had our first child a few months ago, and it became quickly evident that after the arrival of our son that we were going to need more space as we both work from home. Our…”
David· via Google reviews
“Extremely professional and knowledgeable! Job site left clean and neat! Highly recommend them! We had a major leak and since the job was complete, not a drop of water.”
Lori· via Google reviews
“Fantastic service! Professional team, quick turnaround, and excellent results. Highly recommend!”
samantha· via Google reviews
| Monday | 7 a.m.–5 p.m. |
|---|---|
| Tuesday | 7 a.m.–5 p.m. |
| Wednesday | 7 a.m.–5 p.m. |
| Thursday | 7 a.m.–5 p.m. |
| Friday | 7 a.m.–5 p.m. |
| Saturday | Closed |
| Sunday | Closed |
Contact
Coverage
77/100 WaterproofingIndex Score
0.9 km from The Danforth (Greektown) centre
Its own website describes below-grade water work
49/100 WaterproofingIndex Score
0.1 km from The Danforth (Greektown) centre
Listed under Basement Waterproofing
48/100 WaterproofingIndex Score
2.1 km from Leaside centre
Listed under Basement Waterproofing