Skip to content
Let's plan your project

Talk directly with Saverio & the crew

We keep waterproofing simple: send photos, explain what you're seeing, and we'll walk you through the fix. Expect a reply during business hours.

Call or Text

(416) 879-4593

Reach Saverio directly for urgent waterproofing questions or emergency leaks.

Email Our Team

cornerstone@live.ca

Reach out via email, and our team will get back to you quickly.

Schedule an On-Site Assessment

Arrange a site visit

Site visits can be arranged when convenient, and we'll meet you anywhere in the GTA for a walkthrough.

Business Hours

Monday - Saturday8:00 AM - 5:00 PM
SundayClosed

Service Area

Based in East York. We serve homeowners across the GTA, including Toronto, East York, Scarborough, and North York.

Start your project

Get your free estimate

Tell us about your project or what you're seeing, and we'll reach out to chat about the next steps.

By submitting this form, you agree to be contacted by Cornerstone Waterproofing. We respect your privacy and never share project details outside our crew.

Proven Trust

Why homeowners trust our crew

20-Year Warranty

20 year warranty. Call for full coverage details.

Learn more →

Convenient Scheduling

Site visits arranged at your convenience. Emergency repairs available.

Learn more →

Trusted by Toronto Homeowners

44 verified HomeStars reviews from Toronto homeowners across East York, Scarborough, North York, and the GTA.

Learn more →