Exterior Waterproofing

We excavate, seal, and protect your home with proven foundation drainage systems—backed by 15+ years of Southern Ontario expertise.

What Is Exterior Waterproofing?

Your first line of defense against water intrusion. Exterior waterproofing is a permanent solution that blocks water from the outside of your foundation. What we do:
  • Carefully excavate around your foundation down to the footing
  • Clean and repair the foundation wall and cracks
  • Apply a professional waterproof membrane and protective drainage board
  • Install exterior drainage (weeping tile/French drain) to redirect water away
  • Backfill with drainage-friendly materials and restore grading/landscaping
Exterior Waterproofing

Best for homes with:

Persistent basement leaks or dampness
High water tables and hydrostatic pressure
Deteriorating waterproofing
Water pooling near the foundation

Why Homeowners Choose Exterior Waterproofing

Permanent exterior barrier that protects the structure
Reduces hydrostatic pressure on walls
Keeps basements dry, healthier, and mold-resistant
Protects finished basements and storage
Increases home value and peace of mind

Signs You Need Exterior Waterproofing

Outside Water Issues Lead to Inside Damage
If you notice these signs, your foundation’s exterior seal has likely failed.
Water seeps through foundation pores when the soil surrounding your home becomes saturated. Delaying the fix can lead to structural decay. Watch for:
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Foundation cracks visible from the outside

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Wet basement corners or walls

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Mold or mildew near exterior walls

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Peeling paint, efflorescence, or white residue inside

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Standing water or consistently damp areas

Our Exterior Waterproofing Process

A 5-step engineering-led process to seal your foundation and drain water safely.
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Foundation Inspection & Planning

We use advanced moisture-detection tools to map the leak source and assess your home's unique soil and drainage conditions.
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Excavation to Footing Level

Our crew carefully excavates down to the footing of your foundation, ensuring a clear workspace while protecting your property’s perimeter.
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Wall Cleaning and Crack Sealing

We strip the walls of debris and use high-pressure injections to seal every structural crack, restoring the concrete's original integrity.
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Waterproof Membrane and Protection

We apply a seamless, flexible rubberized membrane followed by a dimpled drainage board to create an impenetrable shield against groundwater.
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Weeping Tile & Proper Backfill

We install new, high-capacity weeping tiles (French drains) covered in clear stone, then backfill with native soil to ensure perfect water redirection.

Insurance Support When You Need It Most

Insurance
We work with your insurance company to simplify claims related to exterior foundation issues or basement water damage. If your basement has flooded due to outside water pressure, your policy may help cover restoration and repairs. ABC Company can provide:
Detailed inspection reports for claims
Written repair estimates
Photo and video documentation
Coordination with adjusters
Fast execution once approved

Frequently Asked Questions

Can't find the answer? Explore our comprehensive FAQ section or contact us directly
What is exterior foundation waterproofing and how does it protect my basement?
Exterior foundation waterproofing is a permanent system that stops water before it touches your foundation by creating an outside barrier and drainage path. We excavate to the footing, repair cracks, apply an elastomeric waterproof membrane plus dimple drainage board, and install French drain/weeping tile to redirect water away. DrySeal’s trained team brings 15+ years of expertise and includes a written warranty.
Is exterior waterproofing better than interior basement waterproofing?
Exterior waterproofing protects the structure by blocking groundwater and reducing hydrostatic pressure on the walls, keeping basements drier and healthier. Interior systems manage water after it enters via channels and a sump pump; they help with symptoms but don’t shield the foundation. For long‑term prevention, DrySeal recommends exterior as the gold standard.
How long does the project take, and will you restore my yard?
Most homes take 3–7 days depending on foundation length, soil, access, and weather. We protect utilities and landscaping, backfill with drainage‑friendly materials, restore grading, and replace soil/sod in the work area. You’ll get a clear timeline during your free exterior assessment.
How long does exterior waterproofing last, and what warranty do you offer?
With professional membranes, drainage boards, and proper drainage, exterior systems are designed to last for decades. DrySeal provides a written warranty on workmanship and materials and uses products tested for long‑term performance.
What are the signs I need exterior waterproofing at my home?
Look for foundation cracks, wet corners after rain, efflorescence, musty odors, peeling paint, or recurring mold. Standing water near the foundation or a sump pump running during light rain also signal hydrostatic pressure issues. Schedule a free exterior assessment to confirm the cause and options.
Do I need a permit for exterior waterproofing, and can you handle it?
Many municipalities require permits for exterior foundation waterproofing and drainage connections. DrySeal is licensed, insured, and permit‑ready, and we handle the paperwork and inspections where required to keep your project compliant and on schedule.
How much does exterior waterproofing cost, and do you work with insurance for floods?
Pricing depends on linear footage, depth, access, and repairs; we provide a detailed, written estimate after inspection with transparent pricing. If your basement flooded due to outside water pressure or a sudden event, parts may be covered by your policy—DrySeal documents the loss and coordinates with your adjuster. For urgent leaks or flooding, our on‑call team responds fast to stabilize and protect your home.

Let’s Fix It. Let’s Waterproof 
It. Let’s Restore It.

Schedule a free, no-pressure inspection today and see why ABC Company is one of Ontario’s most trusted basement waterproofing and restoration teams.
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We protect homes across Southern Ontario with expert basement waterproofing, leak repair, and restoration — backed by 15+ years of experience and a lifetime warranty.

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