Floor Drains & Backwater Valves
Professional drain and backwater valve installation to protect your home from sewer backups and flooding.
Many older Toronto homes have drain systems that are prone to cracking, blockages, and backups over time. When drains fail, sewage and water can back up into your basement — a problem that gets worse the longer it's left.
Plan Your Next Step
Related Services
Compare adjacent solutions, confirm coverage, and move to the right next page without having to restart your search.
Compare waterproofing, foundation, drain, concrete, and entrance work from one hub page.
Confirm whether we schedule inspections and project work in your Toronto or Mississauga neighbourhood.
Speak with Saverio directly and get a written quote for your basement or foundation project.
Tie floor drain repairs into sump pump, weeping tile, and membrane work while the slab is open.
Install new basement floor drain layouts while gaining headroom or bench footings.
Finish with a new basement slab, sidewalk, or garage pad after plumbing upgrades.
Why Choose Cornerstone for Drain Repairs?
A backed-up drain is an emergency. We combine over 20 years of experience with modern diagnostic tools and licensed expertise to find the problem and fix it properly — not just patch it temporarily.
- Free estimate and up front pricing for all repairs.
- Backwater valve installation for flood and sewer backup prevention.
- Expert drain camera inspection — we show you exactly what's going on.
- Clear explanation of all repairs before any work begins.
- Over 20 years experience serving Toronto and Mississauga.
Ready to get started?
Call 416-879-4593 or request your free estimate.
Our Professional Drain Restoration Process
We follow a precise, 4-step process to ensure your new drainage system is installed correctly, tested thoroughly, and compliant with all municipal codes.
Camera Inspection
We run a camera through your drains so you can see what's going on — blockages, roots, or damage.
Quote & Permits
We explain what needs fixing, give you a price, and handle permits and subsidy paperwork.
Drain Replacement
We remove the damaged sections and install new drain lines and backwater valves.
Testing & Cleanup
We test the system, pour fresh concrete over the floor, and hand over your warranty.
Service Areas
Serving Toronto & Mississauga
We provide emergency drain repairs, camera inspections, and scheduled backwater valve installations across Toronto, East York, North York, Forest Hill, Beaches, Leaside, Rosedale, Cabbagetown, Scarborough, and Mississauga.
20-Year Drain Repair Guarantee
When we replace your old clay lines with modern PVC/ABS, we back the materials and our concrete restorations with a rock-solid warranty.
Toronto's Drain Protection Team
Get Your Free Floor Drain Repair & Installation Estimate
Speak with Saverio directly about your project. No obligation, no pressure — just honest advice from someone with 20+ years of experience.