5 Common Questions About Waterproofing in Toronto, Aurora & Newmarket

Foundation leaks are among the most common issues faced by Ontario homeowners — here are the answers to the questions we hear most often.

1. What causes basement leaks in Toronto‑area homes?

The most common causes are poor grading, cracked foundation walls, clogged weeping tiles, and aging waterproof membranes. Clay soils in the GTA hold water against basement walls, increasing pressure and seepage risk.

Ontario Concrete Inc. inspects, diagnoses, and repairs leaks permanently.

2. Should waterproofing be done from the inside or outside?

Exterior waterproofing provides a long‑term fix by stopping water before it enters the foundation. Interior systems manage water that’s already inside. The best method depends on accessibility and foundation type — we offer both for block, concrete, and ICF foundations.

3. How much does basement waterproofing cost in the GTA?

Costs depend on foundation material, depth, and repair length, but most exterior waterproofing in the Toronto, Aurora, and Newmarket areas ranges $80–$150 per linear foot.

Ontario Concrete does the best price for waterproofing projects — always with clear, written estimates.

4. How long does waterproofing last?

Professional systems like rubberized membranes or ICF‑specific coatings can last 30–50 years, especially when installed with proper backfill and drainage. Cheap patching or sealants typically fail within a few seasons.

5. How can I tell if my foundation needs waterproofing?

Watch for warning signs:

- Damp spots or water stains on basement walls

- Musty smells or visible mold

- Foundation cracks or white powder (efflorescence)

- Standing water near your home’s perimeter

If any apply, contact Ontario Concrete Inc. for inspection before the damage spreads.

Keep Your Foundation Strong and Dry

Homeowners trust Ontario Concrete Inc. for dependable waterproofing services across Toronto, the GTA, Aurora, and Newmarket. Our skilled crew ensures your foundation remains dry, safe, and structurally secure for years to come.

💥 We beat up to 20% off any written price — guaranteed.