Why Choose BFR for Backwater Valve in Toronto & the GTA
Protect your home.
Protect your investment.
BFR Waterproofing & Masonry has served Toronto and the GTA since 1967 — three generations of experience. No subcontractors. Just proven solutions backed by a 20-year transferable warranty.
Water problems won't fix themselves.
- Prevent costly structural damage
- Protect indoor air quality
- Stop mold and mildew
- Increase your property value
- Work with local experts you can trust
Don't wait for water to win.
Get it fixed the right way.
Get a free, no-obligation estimate from our waterproofing experts.
Our process
Site Assessment & Consultation
We inspect the issue, explain the cause, and recommend the right solution.
Customized Plan & Quote
A clear, detailed plan and an upfront quote with no hidden fees.
Professional Installation
Our in-house team does the job right — with care and attention to detail.
Quality Assurance & Cleanup
We meet our high standards and leave your home clean.
20-year transferable warranty
Long-term protection and peace of mind, built to last.
Cost factors
Cost depends on the depth and accessibility of the sewer line, whether the floor is finished or unfinished, and local permit requirements. We provide an exact cost after a free on-site assessment.
Before & after
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TODO(BFR): before/after project photography for this service has not been supplied yet.
Why Backwater Valves Matter More During Heavy Storms
During intense rainfall, municipal sewer systems can become overwhelmed and push wastewater back up through household pipes — a backup that has nothing to do with your own plumbing and everything to do with a surcharged street sewer. A backwater valve is a mechanical check valve that closes automatically to block that reverse flow, protecting your basement from what's often the most contaminated and damaging type of flooding a home can experience. In areas with combined or aging sewer infrastructure, it's frequently one of the highest-value protections a homeowner can add.
Frequently asked questions
Answers to what homeowners ask us most about backwater valve.
- Do I need a permit for a backwater valve?
- Most municipalities require a permit and inspection for backwater valve installation. We handle the permit application as part of the job, so you don't have to navigate the process yourself.
- Does my city offer a rebate for backwater valve installation?
- Several GTA municipalities, including Toronto, have offered basement flooding protection subsidy programs that can offset part of the cost. Program availability and amounts change over time, so ask us for the current status when you book your estimate.
- How often does a backwater valve need maintenance?
- We recommend having your backwater valve inspected annually to confirm the flap moves freely and the seal is intact — a quick check that keeps it ready when you need it.
- Will a backwater valve affect my normal plumbing?
- No — you won't notice any difference in how your drains work day to day. The valve stays open during normal use and only closes automatically if water tries to flow back toward the house.
Backwater Valve at a glance
- Family-owned since 1967
- Three generations, no subcontracting.
- Warranty
- Backed by a 20-year transferable warranty.
- Service area
- Toronto and the GTA — 10 cities and counting.
- Estimates
- Free, no-obligation, and fast to schedule.