
Sewer Camera Inspection & Drain Cleaning Project in Downtown Thorold
Overview When a homeowner in downtown Thorold noticed water beginning to back up in their basement floor drain, they knew
For reliable waterproofing, drain cleaning, and sewer inspections in Thorold, trust McDowell Drain & Waterproofing. Thorold homeowners face plumbing challenges like heavy snowmelt and aging infrastructure. McDowell Drain & Waterproofing has provided expert waterproofing and drainage solutions for over 45 years, protecting homes from water damage and sewer issues. Call us for fast, reliable service in Thorold! Learn more about our sewer camera inspection and wet basement repair services.
McDowell Drain & Waterproofing is the trusted expert for residential and commercial drainage solutions across the Niagara Region. Whether you’re in St. Catharines, Niagara Falls, Thorold, Welland, Fort Erie, Grimsby, or nearby areas, we provide professional drain cleaning, sewer repairs, waterproofing, and foundation repairs.
At McDowell Drain & Waterproofing, we pride ourselves on delivering reliable and professional drainage solutions to the Niagara on the Lake area. Our expert technicians are dedicated to providing personalized service with a focus on your specific needs.
We’ve successfully completed over 3,500 drainage and waterproofing projects across the region—earning the trust of homeowners and businesses alike.
With more than 45 years in the industry, we bring unmatched expertise, hands-on knowledge, and proven reliability to every job.
Our team is composed of highly skilled and experienced professionals, ensuring top-quality service every time.
We are available around the clock to resolve your drainage issues, no matter the time of day or night.
We provide honest, upfront pricing with no hidden fees, so you know exactly what to expect.
Each project is handled individually, with personalized solutions designed to meet your unique needs.
In Thorold, the cost for interior basement waterproofing, including weeping tile, sump pump, vapor barrier, and wall sealing, typically ranges from $3,000 to $10,000, often quoted at $78–$150 per linear foot of drainage installed. For full exterior waterproofing, including excavation, membrane application, foundation repair, and exterior drainage systems, prices usually start around $10,000 and can go up to $30,000 or more, with rates of $100–$400 per linear foot. Factors that influence pricing include the severity of water intrusion, foundation type, soil conditions, basement size, and property access—typical concerns in Thorold given its clay soils and high moisture levels.
Explore some of our latest waterproofing projects completed in Thorold. Each project highlights our expertise in protecting homes and buildings from water damage through advanced techniques and high-quality materials. From basement waterproofing to foundation drainage solutions, we ensure every job meets the highest standards for durability and performance. Browse our recent work to see how we help property owners maintain dry, secure, and long-lasting structures.

Overview When a homeowner in downtown Thorold noticed water beginning to back up in their basement floor drain, they knew
Basement Waterproofing & Drain Services in Thorold
At McDowell Drain & Waterproofing, we proudly serve homeowners across Thorold’s unique neighbourhoods, from Thorold South and Allanburg to Confederation Heights and Rolling Meadows. Each area of Thorold has its own challenges — older homes in the Downtown Core often struggle with foundation cracks and hydrostatic pressure, while properties near the Welland Canal and Port Robinson are more prone to high groundwater levels and flooding. Our team specializes in interior and exterior basement waterproofing, sump pump installation, clogged drain services, and drain repair, all tailored to Thorold’s soil conditions and aging infrastructure.
Whether you’re on the Merrittville Highway corridor dealing with surface water drainage issues or in Thorold North worried about heavy rains seeping into your basement, we bring 45+ years of trusted expertise to protect your home. With local crews, 5-star reviews, and Google Guaranteed service, we’re the go-to waterproofing and drainage specialists across every corner of Thorold.
We serve every neighbourhood in Thorold — covering postal area L2V — including Allanburg, Confederation Heights, Downtown Thorold, Port Robinson, Rolling Meadows, Thorold South, and Beaverdams.
Grease, hair, soap scum, and debris buildup are common causes of clogs in Thorold.
We install backwater valves and inspect sewer lines for potential blockages.
It replaces pipes without digging up landscaping, preserving property aesthetics.
Heavy snowmelt and rain in Thorold increase the risk of basement flooding without proper waterproofing.
Yes, we replace corroded pipes and address system inefficiencies to improve water flow.
With proper materials and installation, exterior waterproofing can last 20–30 years.
We repair or replace damaged pipes using advanced techniques like trench-less repair or pipe relining.
Yes, we offer 24/7 support for urgent issues like floods and backups.