Exterior basement waterproofing permanently stops water before it meets your foundation walls. Technicians excavate around your home, down to footing level, and install a multi-layer system:
Niagara Falls’s unique environment compounds hydrostatic challenges:
● High Water Table & Welland Canal Influence: Groundwater often reaches within inches of the footing, making basement waterproofing in Niagara Falls essential.Be on the lookout for:
Spotting these early can save you thousands in repairs. Schedule a free inspection St. Catharines today.
Mastery of Niagara Falls’s foundation and drainage challenges.
Google-Guaranteed professionals meeting all Ontario building codes
We’ve successfully completed over 3,500 drainage and waterproofing projects across the region—earning the trust of homeowners and businesses alike.
Detailed, no-surprise written quotes.
20-year membrane; 5-year on workmanship.
Rapid repair service for flood or structural crises.
A 1920s home in Clifton Hill leaked during every downpour. McDowell’s exterior solution:
Outcome: No water intrusion after three severe storms—and walls remain straight, without bowing.
Hydrostatic pressure occurs when groundwater accumulates and presses against foundation walls. Exterior waterproofing relieves this force by:
By addressing both below-grade and surface water, exterior systems neutralize hydrostatic pressure—preventing cracks, leaks, and structural damage.
Check membrane integrity and downspout connections.
Remove leaves and sediment to prevent overflow.
Re-grade any low spots around the foundation.
Use a garden hose at cleanouts to clear sediment every 2–3 years.
Other Solutions We Offer:
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Being a homeowner is one of the most rewarding commitments you can make. Creating stability, the sense of accomplishment, and
A crack in your foundation can be either a small waterproofing issue… or the first warning sign of structural movement.
A basement should feel like a calm part of the house — a place you don’t have to think about
Plumbing problems usually don’t start with a big splash. They begin in small ways — a tap that won’t stop
Sometimes your bathtub just decides it won’t drain. No warning, no reason… it just sits there with water like it
Properly functioning drains are barely noticed when they are functioning correctly. But when something goes wrong it can be disorganizing
USP |
Details |
|---|---|
| 45+ Years of Proven Industry Experience | McDowell Drain & Waterproofing has been protecting homes for over four decades—experience that cannot be replicated. |
| 20-Year Written Warranty on Waterproofing Systems | Long-term protection backed by a 20-year warranty, not short-term promises. |
| 3,500+ Successfully Completed Projects | Thousands of waterproofing and drainage projects completed across residential properties. |
| Niagara Region Specialists | Deep expertise in local soil conditions, water tables, and aging infrastructure unique to the Niagara Region. |
| Complete Drainage & Waterproofing Solutions | Interior waterproofing, exterior waterproofing, drain repair, sump pumps, backwater valves—handled by one expert team. |
| Permanent Fixes, Not Temporary Repairs | Root-cause solutions that stop water problems permanently, not seasonal patchwork. |
| Honest Diagnostics & Clear Explanations | Homeowners receive transparent inspections with practical recommendations—no scare tactics. |
| Trusted by Local Homeowners for Generations | A reputation built through decades of consistent workmanship and word-of-mouth trust. |
| Clean, Respectful, Professional Worksites | Work completed with care for the home, landscaping, and living space. |
| Fast Response for Drainage & Water Emergencies | When water threatens your home, McDowell responds quickly to limit damage. |
Most projects finish in 5–8 days, depending on home size and soil conditions.
Many Niagara Falls municipalities require permits; McDowell handles applications for you.
Yes—every plant and hardscape is protected and fully restored to match pre-work conditions.
Absolutely—dual systems provide maximum defense against groundwater and leaks.
Annual visual checks and periodic drain tile flushing every 2–3 years keep the system optimal.
Basement flooding during rain indicates drainage failure or hydrostatic pressure. Professional waterproofing and drainage correction are required to prevent structural damage.
Recurring leaks mean the underlying drainage or foundation issue was never properly resolved. Permanent interior or exterior waterproofing systems are required.
Yes. Water-leaking foundation cracks worsen over time and can compromise structural integrity if not professionally repaired.
Sewer backups occur when municipal systems overload. Installing a backwater valve or repairing drainage lines is the only permanent solution.
A failed sump pump leaves your basement vulnerable to flooding. Immediate repair or replacement is required to restore protection.
Cove joint leaks occur where the wall meets the floor and require an interior drainage system—not surface patching.
Yes. Persistent musty smells signal trapped moisture and potential mold growth that must be addressed through waterproofing.
Exterior water pooling increases pressure against foundation walls and leads to leaks. Drainage correction is required.
Yes. Insurers and home inspectors often require documented waterproofing repairs before approving claims or home sales.
Finished basement damage requires immediate waterproofing to stop repeat losses and protect the home’s value.