How much does basement waterproofing cost in Toronto?

The cost depends on the method, area size, and severity. Interior crack injection starts at $500–$800 per crack. Full interior perimeter drainage systems range from $5,000–$15,000. Exterior waterproofing can range from $8,000–$25,000+. We provide free written estimates.

Do you offer a warranty on waterproofing work?

Yes. All projects are backed by a lifetime transferable warranty on workmanship. The warranty stays with the home if you sell it.

How long does a waterproofing project take?

Most interior projects take 2–4 days. A single crack injection can be done in one visit. Exterior waterproofing typically requires 3–5 days.

Interior vs. exterior waterproofing — which do I need?

Interior systems manage water that has entered through the floor-wall joint or slab. Exterior waterproofing stops water before it reaches the foundation. Many Toronto homes benefit from a combination of both.

Will waterproofing increase my home's resale value?

Yes. A dry basement with a documented waterproofing system and transferable warranty is a strong selling point in the Toronto housing market.

What areas in Toronto do you serve?

We serve Toronto and the GTA including Etobicoke, Scarborough, North York, Mississauga, Brampton, Oakville, Burlington, Vaughan, Richmond Hill, Markham, and Pickering.

Do I need a permit for basement waterproofing?

Interior waterproofing typically does not require a permit. Exterior excavation may require one depending on scope. We handle all permit requirements and ensure compliance with the Ontario Building Code.

Basement Waterproofing Toronto | Foundation Repair & Sump Pumps

Early Warning Signs

Signs Your Basement Has a Water Problem

Small warning signs often point to bigger drainage, foundation crack, or moisture issues in Toronto homes. If you notice any of these, it's worth booking a free basement inspection before the damage spreads.

Basement inspector examining wall with callouts showing vertical crack, white staining, damp at joint, and sump pump area

Water at the Floor-Wall Joint

Often linked to hydrostatic pressure or failed drainage at the footing.

Vertical Foundation Cracks

Most vertical cracks can often be injected, but widening or horizontal cracks may need further review.

Efflorescence / White Staining

Mineral deposits can mean moisture is moving through concrete or block.

Musty Smell or Damp Air

Persistent humidity may point to hidden seepage and can contribute to mold growth.

Peeling Paint or Damp Drywall

Finished basements often hide water damage until it spreads and becomes costly to repair.

Sump Pump Running Often

Frequent cycling can signal high groundwater, a drainage issue, or a failing check valve.

Free on-site inspection

Clear written recommendations

No-pressure estimate valid for 30 days

Recent Waterproofing Projects

Real Basement Problems.
Real Solutions.

Every home is different, but the goal is always the same: find the source and protect your basement for the long term.

Exterior Foundation Waterproofing

Problem

Water entering through foundation walls from saturated soil and failed exterior coating.

What's Completed

Excavation, waterproofing membrane, dimple board, footing drain, and backfill.

Best For

Chronic wall seepage, high water exposure, or no existing exterior waterproofing.

View Exterior Waterproofing

Interior drainage system and sump pump installation in Toronto basement

Interior Drainage & Sump Pump

Problem

Water at the floor-wall joint or cove joint, recurring seepage, and hydrostatic pressure under the slab.

What's Completed

Interior perimeter drainage, sealed sump basin, pump discharge correction.

Best For

Floor-level water entry, recurring basement flooding, or high water table areas.

View Sump Pump Systems

Sump pump replacement with battery backup in Toronto home

Sump Pump Replacement & Backup

Problem

Old or failing pump, power outage risk, high water table, or pre-renovation upgrade needed.

What's Completed

New pump, check valve, battery backup, sealed lid option, discharge correction.

Best For

Aging sump pumps, storm protection, or homes without battery backup systems.

View Sump Pump Projects

Foundation Crack Injection

Problem

Vertical or diagonal foundation wall crack leaking water into the basement.

What's Completed

Polyurethane crack injection for most leaks, epoxy for structural cracks, interior crack sealing.

Best For

Water entering through a visible wall crack in poured concrete foundations.

Fix a Foundation Crack

Drainage Correction

Problem

Water pooling near the foundation from poor grading, downspout discharge, or failed weeping tile.

What's Completed

Grading correction, downspout extensions, weeping tile replacement, or surface drainage solutions.

Best For

Properties with standing water near walls, failed weeping tile, or inadequate surface drainage.

Stop Floor Seepage

Interior Foundation Waterproofing

Problem

Moisture seeping through basement walls causing efflorescence, damp drywall, or mold concerns.

What's Completed

Interior membrane application, vapor barrier, wall drainage channels, and dehumidification.

Best For

Block or stone foundations, damp walls without active leaks, or pre-finishing waterproofing.

Waterproof From Inside

40+

Homes waterproofed
this season

15+

Years of waterproofing
experience

25+

Licensed, certified
team members

Toronto & GTA

Serving the Greater
Toronto Area

Frequently Asked Questions

Basement Waterproofing Questions — Answered

Common questions Toronto homeowners ask before booking a waterproofing inspection.

The cost of basement waterproofing in Toronto depends on the method, the size of the affected area, and the severity of the issue. Interior crack injection starts at around $500–$800 per crack. Full interior perimeter drainage systems typically range from $5,000–$15,000. Exterior waterproofing is more involved and can range from $8,000–$25,000+. We provide free written estimates so you know the exact cost before any work begins.

Yes. All Barrier Waterproofing projects are backed by a lifetime transferable warranty on workmanship. This means the warranty stays with the home if you sell it, giving both you and future buyers confidence in the repair. Specific product warranties vary by manufacturer.

Most interior waterproofing projects in Toronto take 2–4 days to complete. A single crack injection can often be done in one visit. Exterior waterproofing typically requires 3–5 days depending on excavation depth and access. We'll provide a clear timeline in your written estimate.

It depends on the source of water entry. Interior systems manage water that has already entered through the floor-wall joint or slab, directing it to a sump pump. Exterior waterproofing stops water before it reaches the foundation wall. Many Toronto homes benefit from a combination of both. Our free inspection determines the right approach for your situation.

Yes. A dry basement with a documented waterproofing system and a transferable warranty is a strong selling point. Buyers in the Toronto housing market look for this, and a waterproofed basement can remove a major objection during home inspections.

Yes — completely free with no obligation. Our inspector will examine your basement walls, floor joints, cracks, sump system, grading, and downspouts. You'll receive a clear explanation of the problem, recommended repair options, and a written estimate valid for 30 days. No pressure, no sales tactics.

Barrier Waterproofing serves Toronto and the Greater Toronto Area including Etobicoke, Scarborough, North York, East York, Mississauga, Brampton, Oakville, Burlington, Vaughan, Richmond Hill, Markham, and Pickering. Contact us to confirm service availability in your area.

Interior waterproofing work in Toronto typically does not require a building permit. Exterior excavation may require a permit depending on the scope and proximity to property lines. We handle all permit requirements on your behalf and ensure all work complies with the Ontario Building Code.

Book Your Free Inspection

Get a Free Written Estimate for Your Basement

Fill out the form or call us directly. We'll schedule a free on-site inspection at a time that works for you — no obligation, no pressure.

+1 (437) 545-0067

info@barrierwaterproofing.ca

Serving Toronto & the Greater Toronto Area

Office Hours

Monday – Friday: 8:00 AM – 6:00 PM
Saturday: 9:00 AM – 3:00 PM
Sunday: Closed
Emergency calls accepted 24/7

Request a Free Inspection

We'll get back to you within one business day.

Basement Waterproofing
& Foundation Repair

Signs Your Basement Has a Water Problem