Foundation Crack Repair: Which Cracks Need Waterproofing vs Structural Repair?
A crack in your foundation can be either a small waterproofing issue… or the first warning sign of structural movement.
December 25, 2025
Have you been struggling with excessive flooding? Are you looking for a hassle-free way to avoid moisture and damage in your home? McDowell Drain & Waterproofing provides professional back water valve installation that can protect your family and property. Contact us today to get the peace of mind that comes from knowing your home is secure!
Backwater valves are essential for protecting your home from sewer backups, a common issue in Canadian homes, especially during heavy rainstorms or rapid snowmelt. Without a backwater valve, your home’s drainage system is at risk of being overwhelmed by municipal sewer systems, potentially forcing sewage and wastewater back into your waterproofing in basement.
Under regular conditions, wastewater flows from your home to the municipal sewer system without obstruction.
If the municipal sewer system experiences high pressure or backflow, the backwater valve automatically closes, blocking wastewater from entering your home. A flap inside the valve rises to seal the pipe and prevents reverse flow.
The valve operates using gravity, requiring no external power source.
It resets automatically once the sewer pressure normalizes.
This simple yet effective mechanism safeguards your home against costly water damage and unsanitary conditions.
At McDowell Drain & Waterproofing, we follow a meticulous process to ensure your backwater valve is installed correctly and functions optimally:
We start by inspecting your home’s plumbing system and sewer line to determine the best location for the valve installation. Our team ensures that the proposed installation complies with local building codes and regulations.
We handle all the necessary permits and paperwork to ensure a smooth and compliant installation process.
Our technicians prepare the worksite to minimize disruption to your home.
The main sewer line is exposed, and a section is removed to accommodate the backwater valve. The valve is securely installed, tested for proper operation, and integrated seamlessly into your existing plumbing system.
We conduct rigorous testing to confirm that the valve functions correctly under simulated backup conditions.
Our team provides you with a demonstration on how the valve works and offers maintenance tips.
After completing the installation, we restore your property to its original condition.
A final inspection ensures that the system meets all safety and performance standards.
McDowell Drain & Waterproofing is the trusted choice for backwater valve installation in Niagara and surrounding regions. Here’s why:
With more than 45 years in the industry, we bring unmatched expertise, hands-on knowledge, and proven reliability to every job.
Our installations meet all local regulations, ensuring your backwater valve is compliant and reliable.
We’ve successfully completed over 3,500 drainage and waterproofing projects across the region—earning the trust of homeowners and businesses alike.
Drainage & Waterproofing emergencies don’t wait, and neither do we. Our team is available around the clock to address urgent concerns.
We provide upfront estimates with no hidden fees, ensuring you receive top-quality service within your budget.
From start to finish, we prioritize clear communication, professional workmanship, and your peace of mind.
We are proud to have earned the trust and confidence of our customers through our commitment to excellence and exceptional service.
We had some drainage issues and called McDowell Drain & Waterproofing. It was GREAT service, he called me right back and was here within 2 hours. Solved the problem and haven’t had any issues since. On top of great service, Stuart was very friendly, helpful and knowledgeable! I would highly recommend and will certainly be calling him for any plumbing issues we may have in the future!:)
Sara Swayze
Professional from first contact to job completion. Job was to install a sewer backwater valve but once the floor was opened, it was evident that a sump pump installation was also required. Quickly pivoted to accommodate the additional work scope and still meet the timeline completion. Stuart, the owner is knowledgeable, professional and puts you at ease. Alex the installer did great work and paid attention to details. He was always receptive to any questions or concerns. Would not hesitate to recommend them for your plumbing needs.
David North
MCDOWELL DRAIN & WATERPROOFING, led by Stuart, truly stands out in the professional field. As someone with experience in spotting professionalism, I was thoroughly impressed by Stuart’s ability to listen attentively and resolve the issue promptly as promised. His honesty and competitive pricing, coupled with the high quality of his work, make him a standout choice for any drain and waterproofing needs. I wholeheartedly recommend him to anyone seeking top-notch service in this field!
Nancy Heckman
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A backwater valve prevents sewage from flowing back into your home during sewer line surges by closing a one-way flap.
They protect your home from messy and costly sewer backups caused by heavy rain or municipal sewer system overloads.
It’s installed in your home’s main sewer line, typically in the basement.
Yes, many municipalities require or recommend backwater valves in flood-prone areas.
Most installations are completed within a single day.
Does a backwater valve require maintenance?
Many insurers offer discounts or require valves for coverage against sewer backups.
Costs depend on the complexity of the installation. Contact McDowell for a personalized quote.