Satisfaction Guaranteed

Specializing in waterproofing and foundation repair, Cornerstone Waterproofing Inc. is a fully licensed and insured company serving the Greater Toronto Area.

Family owned and operated, we strive to build trustworthy relationships with our customers, resulting in positive referrals and references. We take great pride in our work and offer a 20-year warranty on all waterproofing jobs to prove it!

Testimonials