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Basement Waterproofing in Whitby, Ontario
DGI Waterproofing helps Whitby homeowners stop basement leaks at the source with interior drainage, exterior membranes, foundation crack repair and sump pump solutions. Our IICRC-certified, insured team provides free inspections, clear recommendations and same-day help for urgent water problems.
Why Whitby Basements Leak – and What Stops It
Whitby basement leaks usually begin with surface water draining toward the foundation, failed or overwhelmed weeping tile, an unsealed foundation crack, sump pump failure, or sewer backup. The lasting fix depends on the entry path: correct exterior drainage first, then repair or install the waterproofing and drainage system that addresses the diagnosed cause.
The Region of Durham’s basement flooding guidance identifies poor lot drainage, failed weeping systems, overflowing eavestroughs, leaking or plugged downspouts, sewer backups and failed sump pumps as common causes. Whitby’s climate-resilience planning also treats urban flooding and basement flooding as connected risks, particularly for older buildings.
The 2025 Lynde Creek flood-mapping update covers a watershed located primarily in Whitby and accounts for future climate impacts. Flood mapping explains area hazards; it does not prove that a particular property will flood. A property-level inspection is still needed.
- Inside check: note whether water appears at a wall crack, window well, floor drain or wall-floor joint.
- Outside check: inspect grading, downspouts and pooling water near the foundation.
- System check: test the sump pump and look for signs that the foundation drainage system is not keeping up.
Local service coverage: Brooklin, Port Whitby, Whitby Shores, Downtown Whitby, Pringle Creek, Williamsburg, Rolling Acres, Blue Grass Meadows, Taunton North and nearby Durham Region communities.
Local guidance reviewed August 4, 2026. Sources: Region of Durham, Town of Whitby and Central Lake Ontario Conservation Authority.
Match the Symptom to the Inspection
These patterns narrow the likely source, but they are not a diagnosis.
01
Water at the wall-floor joint
Inspect: Grading, weeping tile, groundwater pressure and the sump system.
02
One wet wall crack
Inspect: Crack movement and whether injection or an exterior repair is appropriate.
03
Water coming from a floor drain
Inspect: Possible sewer backup; contact the municipality, insurer and a qualified plumber.
04
Musty smell after rain
Inspect: Hidden seepage, condensation and indoor humidity.
How Much Does Basement Waterproofing Cost in Whitby?
The cost to waterproof a Whitby basement depends on the repair method, access, wall depth, total linear footage and damage already present. The planning ranges below help establish an initial budget; a site inspection is required for a written quote because a crack repair and a full exterior excavation involve very different scopes.
| Service | Cost | |
|---|---|---|
| 1 | Exterior Waterproofing | $50 – $300+ per linear ft. (Cost depends on depth and access)* |
| 2 | Interior Waterproofing | $50 – $200 per linear ft.* |
| 3 | Waterproofing Foundation Cracks | $1500-$3000 (Cost depends on width and depth)* |
| 4 | Basement Waterproofing | $6 to $8 per sq. ft. (Cost depends on materials and company)* |
| 5 | Mould Remediation | $1000 – $100,000* |
| 6 | Waterproofing Newer Homes | $2.75 – $4 per sq. ft. * |
*Please note that all prices are approximate and may vary based on the specifics of a project.
Waterproofing & Water Damage Solutions in Whitby
Explore the best waterproofing solutions for your home below. Choose the service that interests you the most and learn how our contractors give the DGI difference to protect your home!
Basement Waterproofing Services
Protect Your Basement with Expert Waterproofing Services
Even the smallest sign of moisture can lead to costly problems if left unchecked. That’s why our basement waterproofing services in Whitby start with a free, detailed inspection, so we can understand exactly what your property needs. No matter if it’s a wet basement, cracks in your foundation, or pooling water, we create personalized solutions designed to keep your home dry for the long haul.
When you work with DGI Waterproofing, you can expect:
- Same-day service for urgent waterproofing needs
- 24/7 emergency flood response available
- Fully licensed, insured, and WSIB-registered contractors
- Waterproofing company certified by the IICRC
- Technicians with years of hands-on experience in the field
- Plenty of 5-star Google reviews from satisfied customers
Exterior Waterproofing Services
Stop Water Damage Before It Starts
Moisture is one of the biggest threats to your home’s foundation, but it can be stopped before it starts. Our extensive exterior waterproofing services are built to keep groundwater, rain, and freeze-thaw damage at bay. We create a durable protective barrier around your foundation to prevent long-term structural issues and protect your home from the elements year-round.
Our exterior waterproofing process is proven, thorough, and designed to last:
- We excavate around your foundation to gain full access to the walls of your foundation
- The foundation is cleaned and inspected for cracks or early signs of moisture issues
- We use high-strength hydraulic cement to patch and reinforce weak spots
- A tough, durable, waterproof membrane is applied to seal and protect the surface from moisture
- We install or upgrade exterior weeping tiles to guide water away efficiently
Don’t wait until water finds a way in. Contact our expert exterior waterproofing team today and get protection your home needs.
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Foundation Repair Services
Your Local Go-To Experts for Foundation Crack Sealing
Tiny cracks in your basement walls or floor might not look like much at first, but they can quickly become a serious threat to your foundation. Water will always find the easiest way in, and even small openings can lead to moisture damage and long-term structural problems. That’s where DGI Waterproofing steps in.
We specialize in sealing your foundation cracks, using techniques that we know will work, like epoxy injection and flexible polyurethane sealing. These solutions don’t just stop water, they restore the strength and integrity of your home’s foundation.
From fine surface lines to larger structural cracks, our technicians treat every job with care and professionalism. And if a crack shows up suddenly? No problem. We’re available 24/7 for emergency foundation crack repair when you need it most.
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Waterproofing For New Homes
Future-Proof Your Home with Reliable Waterproofing
Building a home? Don’t overlook waterproofing during the construction phase. Without proper moisture protection, your new foundation could face problems sooner than you think, from basement leaks to structural weakening. At DGI Waterproofing, we work closely with builders and homeowners to integrate durable waterproofing solutions from day one.
We use industry-leading waterproof membranes and robust moisture barriers designed to perform in changing weather and soil conditions. Whether you need to install a drainage system or just want to seal your foundation, our proactive approach makes sure your home stays dry and protected for years to come.
Don’t wait for water issues to show up, lay the foundation for a dry, damage-free future right from the start.
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Professional Water Extraction
Need Basement Water Removal? We’re Ready 24/7
Water in your basement demands immediate action. Whether the cause is a broken pipe, heavy rainfall, or a malfunctioning sump pump, the longer water sits, the more damage it can do. That’s why DGI Waterproofing offers around-the-clock complete water damage repair services, getting to your home fast to limit the impact and start the restoration process.
Our team brings powerful equipment and cutting-edge moisture tracking tools to every job:
- Commercial-grade pumps and vacuums to clear standing water fast
- Infrared scanning to identify hidden moisture in walls and floors
- High-capacity dehumidifiers and air movers to fully dry the space
From initial cleanup to comprehensive water damage repairs, we’re with you every step of the way, making sure your basement is safe, dry, and restored to its original condition.
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Mould Removal Services
Stop Mould Growth Before It Impacts Your Home and Health
Mould in your home isn’t just an eyesore, it’s a hazard. Whether it’s from past flooding, poor ventilation, or hidden leaks, mould thrives in damp environments and spreads quickly if left untreated. That’s why our team at DGI Waterproofing offers fast, extensive mould removal services to protect your home and everyone in it.
Our experienced technicians act quickly to contain the mould, eliminate the source, and thoroughly clean the affected areas using industry-leading tools and certified safety methods.
Here’s what to expect when you book mould remediation with us:
- In-depth inspection to locate hidden mould and prevent it from spreading
- We carefully get rid of any material that has mould
- Do a deep dive cleaning with HEPA vacuums and industry-grade disinfectants
- Final walkthrough and air quality check to make sure your home is mould-free
Flood & Water Damage Repair
Emergency Basement Flood Cleanup When You Need It Most
Flooding can come out of nowhere, whether it’s because of heavy storm or a pipe that burst. You need to act fast since it can mean the difference between minor cleanup and major repairs. That’s why DGI Waterproofing offers 24/7 emergency flood repair services in Whitby, removing water quickly and restoring your basement before damage sets in.
We’re ready with the equipment and expertise to tackle the full scope of water damage restoration, from cleaning up sewage in your basement to complete drying and repairs.
If flooding has started, here’s what to do while you wait for our team:
- Shut off the water and power only if it’s safe to do so
- Call us immediately to minimize flood damage
- Call your insurance to let them know what happened
- Take photos or video of the damage for documentation
- Do not enter the flooded area until our team says you can safely do so
A flooded basement is a problem no one wants. so don’t let water damage take over your home. Contact us now to get rid of that flooded basement quickly!
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Watch Our Team Work
How Our Waterproofing Systems Keep Basements Dry
Basement water problems often start quietly, through hairline cracks, poor exterior grading, or hidden drainage issues. By the time damp spots or a musty smell show up, the damage may already be growing. At DGI Waterproofing, we offer proven basement waterproofing solutions that stop water before it gets a chance to enter. Our systems are designed to protect your basement from the ground up, keeping your home dry and structurally sound in every season.
Here’s how we help prevent water damage before it starts:
- Advanced Drainage Installations: Our team installs durable French drain systems that direct water away from your foundation, helping to prevent leaks and pooling.
- Crawl Space Waterproofing: We expertly waterproof your crawl spaces with commercial-grade vapor barriers and moisture containment solutions to block dampness at the source.
- Foundation Crack Repairs: From hairline fractures to larger gaps, we fix all basement cracks to stop water from creeping into your home’s structure.
Basement Waterproofing in Whitby: FAQ
Clear answers to the questions homeowners ask before choosing a repair.
How do you waterproof a basement in Whitby?
Effective basement waterproofing starts by identifying the entry point and pressure source. Depending on the inspection, DGI may recommend sealing foundation cracks, installing an interior drainage system and sump pump, or excavating to install an exterior membrane and new drainage. The right system depends on access and conditions.
How much does basement waterproofing cost in Whitby?
The cost depends on the method, wall depth, access, linear footage and damage already present. This page lists planning ranges, but a site inspection is needed for a written quote because a crack repair and a full exterior excavation involve very different scopes.
Is interior or exterior waterproofing better?
Interior drainage manages water that reaches the foundation and is often practical when exterior access is limited. Exterior waterproofing stops water at the outside wall but requires excavation. DGI recommends the least disruptive system that addresses the diagnosed source, not a one-size-fits-all method.
Can a leaking foundation crack be repaired from inside?
Many poured-concrete foundation cracks can be repaired from inside using polyurethane or epoxy injection, depending on whether the crack is actively leaking and whether structural movement is present. Wide, shifting or recurring cracks require further assessment before a repair method is selected.
Does Durham Region offer help for basement flooding upgrades?
Durham Region currently links to a Basement Flooding Loan Program for eligible property owners who have experienced a sanitary sewer backup. The Region says approved work can include a backwater valve and sump pump. Confirm current eligibility and terms with Durham Region before arranging work.
Which Whitby neighbourhoods does DGI serve?
DGI serves homeowners throughout Whitby, including Brooklin, Port Whitby, Whitby Shores, Downtown Whitby, Pringle Creek, Williamsburg, Rolling Acres, Blue Grass Meadows and Taunton North, as well as nearby Durham Region communities.
For municipal guidance, review the Region of Durham basement flooding page. For a property-specific plan, book a free DGI inspection.
Your Trusted Partner for Basement Waterproofing
Small signs like musty smells, peeling paint, or damp basement walls may seem harmless, but they often point to deeper water intrusion problems. At DGI Waterproofing, we deliver reliable basement waterproofing services in Whitby that help you stay ahead of the damage. Whether you’re worried about foundation cracks, persistent humidity, or seasonal flooding, we create tailored waterproofing solutions to protect your home or commercial space, rain or shine.