# Foundation Waterproofing Toronto | Free In-Home Inspection

URL: https://foundationwaterproofingtoronto.ca/

verified 25+ Years GTA Experience · Up to $3,400 CAD Subsidy Filed · Ontario Building Code Part 9 Compliant

# Foundation Waterproofing in Toronto: Crack, Leak and Wet Basement Repair

25+ years fixing wet basements across Toronto and the GTA with crack injection, weeping tile, and sump systems, published CAD pricing, and a free in-home inspection.

![Foundation Waterproofing Toronto crew installing Delta-MS membrane and weeping tile on an excavated Toronto foundation](/images/maps/two-crew-members-in-branded-shirts-and-safety-glas-2.webp)

engineering Delta-MS membrane and weeping tile spec OBC PART 9

Foundation Waterproofing Toronto provides foundation waterproofing, 

basement waterproofing

[/basement-waterproofing-toronto/ →](/basement-waterproofing-toronto/)

, 

foundation crack repair

[/foundation-crack-repair-toronto/ →](/foundation-crack-repair-toronto/)

, and 

wet basement solutions

[/wet-basement-repair-toronto/ →](/wet-basement-repair-toronto/)

 throughout Toronto, ON, backed by 25+ years of experience. Our crew installs 

interior weeping tile

[/interior-weeping-tile-toronto/ →](/interior-weeping-tile-toronto/)

, 

exterior foundation membrane

[/exterior-weeping-tile-toronto/ →](/exterior-weeping-tile-toronto/)

, polyurethane and epoxy crack injection, cove joint sealing, Delta-MS drainage board, and 

sump pump

[/sump-pump-installation-toronto/ →](/sump-pump-installation-toronto/)

 plus 

backwater valve

[/backwater-valve-installation-toronto/ →](/backwater-valve-installation-toronto/)

 systems under Ontario Building Code Part 9 for older Toronto homes with hydrostatic pressure, foundation cracks, or basement flooding history.

payments Scope CAD cost anchor

Foundation crack injection runs $500 to $1,800 CAD per crack. Interior weeping tile is $110 to $220 CAD per linear foot, or $8,000 to $18,000 for a full perimeter. Exterior foundation waterproofing ranges $4,500 to $35,000 CAD depending on excavation scope. Toronto Basement Flooding Protection Subsidy of up to $3,400 CAD is filed on your behalf for eligible sump pump and backwater valve work.

-   check\_circle 25+ Years Foundation Waterproofing Experience
-   check\_circle Ontario Building Code Part 9 Compliant
-   check\_circle Written Workmanship Warranty Available
-   check\_circle Toronto Basement Flooding Subsidy Coordinated
-   check\_circle Free In-Home Basement Inspection
-   check\_circle Same-Day GTA Emergency Response

calendar\_month Book Free In-Home Inspection

[/contact/ →](/contact/)

 

call Call (647) 254-5110

[tel:+16472545110 →](tel:+16472545110)

assignment

## Diagnostic Inspection Request

Free in-home inspection with a written diagnostic, anywhere in the Toronto GTA.

**Thanks, we have your request.** A Toronto dispatcher will call you to confirm the inspection slot.

-   workspace\_premium 25+ Years Experience
-   bolt Same-Day GTA Emergency Response
-   verified\_user Written Workmanship Warranty
-   gavel OBC Part 9 Compliant
-   savings Up to $3,400 CAD Subsidy Filed

Common problems

## 4 Ways Basement Water Shows Up, and What Causes Each

Four patterns account for most of the calls we take across the GTA, from century semi-detached homes in Leslieville, Riverdale, and The Annex to post-war bungalows in East York and on Humber River and Don Valley ravine lots. Each one has a different cause, and each one has a different CAD number attached to fixing it.

water\_damage

### Water on the floor every spring

Melt water saturates clay soil, hydrostatic pressure builds at the footing, and the cove joint or a clogged window well lets it through. It arrives on the same weekend every year.

healing

### Foundation cracks and efflorescence you cannot read

A crack in a foundation wall could be harmless curing shrinkage or a structural warning, and a hydraulic cement patch from a previous owner usually hides it rather than seals it. Nobody has measured it and told you which.

help

### Interior or exterior, and nobody will say

Two contractors, two answers, a $20,000 CAD gap between them, and no written reasoning attached to either recommendation.

price\_check

### The feeling of being over-quoted

Some quotes are $18,000 CAD for work that needs $2,500. Without a diagnostic naming the water source, there is no way to check.

Engineered scope

## 13 Specialised Waterproofing Scopes, From Crack Injection to Weeping Tile

Built to withstand Toronto clay soil hydrostatic expansion and severe freeze-thaw cycling, from interior weeping tile and crack injection to exterior waterproofing with full excavation. We install Blueskin and Aqua Bloc membranes, Delta-MS and Platon drainage board, Emecole injection resins, and Zoeller and Liberty Pumps sump pumps. Every scope below is priced in CAD on its own page, with the free in-home inspection confirming which one your basement actually needs.

 

![Foundation Waterproofing Toronto crew applying exterior membrane to an excavated Toronto basement wall](/images/maps/two-crew-members-in-branded-shirts-and-safety-glas.webp) Most Requested Scope

water\_damage OBC 9.13 / 9.14

### Basement Waterproofing Toronto

Interior and exterior basement waterproofing in Toronto and the GTA for homes with hydrostatic pressure, efflorescence, or spring-thaw seepage, with a free inspection and published CAD pricing.

Interior $8,000 to $18,000 CAD, exterior $4,500 to $35,000 CAD

View details arrow\_forward

[Basement Waterproofing Toronto →](/basement-waterproofing-toronto/)

 

![Foundation Waterproofing Toronto crew injecting polyurethane into a vertical foundation crack in a Toronto basement](/images/maps/two-crew-members-in-branded-shirts-injecting-polyu.webp) Same-Visit Repair

healing 3000 PSI INJECTION

### Foundation Crack Repair Toronto

Foundation crack repair in Toronto and the GTA: polyurethane and structural epoxy injection for poured concrete foundation cracks, structural versus non-structural triage, published per-crack CAD pricing, and a 10-year written workmanship warranty.

From $500 CAD per crack

View details arrow\_forward

[Foundation Crack Repair Toronto →](/foundation-crack-repair-toronto/)

 

![Foundation Waterproofing Toronto crew laying perforated PVC weeping tile in a sub-slab trench in a Toronto basement](/images/maps/two-crew-members-in-branded-shirts-laying-perforat-2.webp) Written Workmanship Warranty

tune SUB-SLAB DRAINAGE

### Interior Weeping Tile Toronto

Interior weeping tile in Toronto and the GTA: a sub-slab perimeter drain and air-gap membrane tied to a sump pump, $110 to $220 CAD per linear foot, installed in 3 to 5 days with a written workmanship warranty.

$110 to $220 CAD per linear foot

View details arrow\_forward

[Interior Weeping Tile Toronto →](/interior-weeping-tile-toronto/)

 

![Foundation Waterproofing Toronto crew fastening Delta-MS drainage board to an excavated Toronto foundation wall](/images/maps/two-crew-members-in-branded-shirts-fastening-dimpl.webp) Source Water Control

construction DELTA-MS SYSTEM

### Exterior Weeping Tile Toronto

Exterior weeping tile replacement: footing-level excavation, Delta-MS drainage board, and membrane to control water at the source.

$4,500 to $35,000 CAD by excavation scope

View details arrow\_forward

[Exterior Weeping Tile Toronto →](/exterior-weeping-tile-toronto/)

 

![Foundation Waterproofing Toronto crew lowering a cast-iron submersible sump pump into a sealed basin](/images/maps/two-crew-members-in-branded-shirts-lowering-a-subm.webp) CSA Certified

water\_pump CSA CERTIFIED

### Sump Pump Installation Toronto

CSA-certified submersible sump pump installation in Toronto and the GTA with a sealed basin, silent check valve, high-water alarm, and optional battery backup.

$1,500 to $3,500 CAD installed

View details arrow\_forward

[Sump Pump Installation Toronto →](/sump-pump-installation-toronto/)

 

![Foundation Waterproofing Toronto crew setting a mainline fullport backwater valve in an opened basement floor trench](/images/maps/two-crew-members-in-branded-shirts-setting-a-mainl.webp) Up to $3,400 CAD Subsidy

gpp\_good MAINLINE FULLPORT

### Backwater Valve Installation Toronto

Mainline backwater valve installation in Toronto and the GTA to prevent sewer backup and basement flooding, with plumbing permit, Toronto Water pre-inspection, and up to $3,400 CAD subsidy filing.

$2,000 to $4,500 CAD, up to $3,400 CAD subsidy available

View details arrow\_forward

[Backwater Valve Installation Toronto →](/backwater-valve-installation-toronto/)

 

![Foundation Waterproofing Toronto crew pumping standing water from a flooded Toronto basement under work lights](/images/maps/two-crew-members-in-branded-shirts-and-boots-pumpi.webp) Same-Day GTA Dispatch

emergency\_home 24/7 DISPATCH

### Emergency Basement Flooding Toronto

Emergency basement flooding response in Toronto and the GTA: same-day dispatch, water extraction, sewer backup vs hydrostatic pressure diagnosis, moisture readings, and a permanent backwater valve, sump pump, or weeping tile fix under Ontario Building Code Part 9.

Diagnostic from $299 CAD, permanent fixes scoped by cause

View details arrow\_forward

[Emergency Basement Flooding Toronto →](/emergency-basement-flooding-toronto/)

 

![Foundation Waterproofing Toronto crew bonding carbon fibre straps to a bowing foundation wall in a Toronto basement](/images/maps/two-crew-members-in-branded-shirts-bonding-carbon-.webp) Engineering Coordinated

foundation STRUCTURAL REPAIR

### Concrete Foundation Repair Toronto

Concrete foundation repair in Toronto and the GTA: structural crack repair, carbon fibre or steel bowing wall stabilization, rubble stone repointing, and foundation rebuilds, with structural engineer coordination and City of Toronto Building Division permits under Ontario Building Code Part 9.

From $700 CAD per crack, rebuild $30,000 to $80,000 CAD

View details arrow\_forward

[Concrete Foundation Repair Toronto →](/concrete-foundation-repair-toronto/)

 

![Foundation Waterproofing Toronto crew excavating a window well and installing a vertical gravity drain](/images/maps/two-crew-members-in-branded-shirts-excavating-a-co.webp) Fast Targeted Fix

window GRAVITY DRAIN

### Window Well Drainage Toronto

Window well drainage across Toronto and the GTA: vertical gravity drain tied to the foundation weeping tile, clear drainage gravel, window well installation and polycarbonate safety covers, plus grading and downspout diversion around the well to stop basement window leaks.

$850 to $2,500 CAD per window well

View details arrow\_forward

[Window Well Drainage Toronto →](/window-well-drainage-toronto/)

 

![Foundation Waterproofing Toronto crew laying perforated drainage tubing in a gravel trench across a Toronto back yard](/images/maps/two-crew-members-in-branded-shirts-laying-perforat.webp) Surface Water Control

waves PER LINEAR FOOT

### French Drain Installation Toronto

French drain installation: perforated pipe in a clear gravel trench, downspout integration, grading correction, and discharge to lot line under Ontario Building Code Part 9, relieving hydrostatic pressure at the foundation before it reaches the basement.

$85 to $175 CAD per linear foot

View details arrow\_forward

[French Drain Installation Toronto →](/french-drain-installation-toronto/)

 

![Foundation Waterproofing Toronto crew applying positive-side membrane to a commercial foundation wall in Toronto](/images/maps/two-crew-members-in-branded-shirts-applying-positi.webp) Scoped Contract

apartment COMMERCIAL SCOPE

### Commercial Foundation Waterproofing Toronto

Commercial foundation waterproofing in Toronto and the GTA for buildings under 15,000 sq ft: parkade slabs, elevator pits, blindside and positive-side membrane, $2M commercial general liability, and WSIB coverage on a scoped per-project contract.

$25,000 to $150,000 CAD per project

View details arrow\_forward

[Commercial Foundation Waterproofing Toronto →](/commercial-foundation-waterproofing-toronto/)

 

![Foundation Waterproofing Toronto crew tracing a basement leak source along a damp foundation wall](/images/maps/two-crew-members-in-branded-shirts-tracing-a-basem.webp) Source-First Diagnosis

water\_drop LEAK SOURCE TRIAGE

### Basement Leak Repair Toronto

Basement leak triage: wall crack, cove joint, window well, or floor slab source diagnosed via moisture meter reading and camera inspection, matched to targeted polyurethane injection, sealing, or drainage fix.

$500 to $6,500 CAD, scoped by leak source

View details arrow\_forward

[Basement Leak Repair Toronto →](/basement-leak-repair-toronto/)

 

![Foundation Waterproofing Toronto crew assessing a chronically damp basement wall with moisture meters in a Toronto home](/images/maps/two-crew-members-in-branded-shirts-assessing-a-chr.webp) Cause-Based Scoping

rainy CAUSE TO SCOPE

### Wet Basement Repair Toronto

Wet basement diagnosis: efflorescence, chronic dampness, vapour control, crawl space encapsulation, or a full interior and exterior weeping tile system, routed to the correct scope by written moisture reading and camera inspection.

$500 to $18,000 CAD, scoped by cause

View details arrow\_forward

[Wet Basement Repair Toronto →](/wet-basement-repair-toronto/)

![Two crew members injecting polyurethane resin into a foundation crack in an older Toronto basement](/images/misc/two-crew-members-injecting-polyurethane-resin-into.webp) ![Two crew members connecting a new sump pump and sealed basin to interior weeping tile in a North York bungalow](/images/misc/two-crew-members-connecting-a-new-sump-pump-and-se.webp)

Why choose us

## Six Reasons GTA Homeowners Call Us First

Foundation Waterproofing Toronto is WSIB registered, carries $2M liability insurance, and installs CSA-certified sump pumps and backwater valves to the Ontario Plumbing Code. Every claim here is checkable against this page or provable on request, which is the standard we hold ourselves to on quotes as well.

engineering

### 25+ Years of Foundation Waterproofing Experience

Two and a half decades of interior weeping tile, exterior membrane, polyurethane and epoxy crack injection, and sump and backwater valve installation across Toronto and the GTA. That range is why our diagnosis is quick and our recommendation is narrow.

schedule

### Same-Day GTA Emergency Response

Toronto, Vaughan, Mississauga, Brampton, Markham, Richmond Hill, North York, Scarborough, Etobicoke, and Oakville. Spring thaw and storm flooding is prioritised within 24 hours and triaged by water depth.

receipt\_long

### Transparent CAD Pricing Published

Free in-home inspection, crack injection from $500 CAD, sump pump $1,500 to $3,500 CAD, backwater valve $2,000 to $4,500 CAD, interior weeping tile $110 to $220 CAD per linear foot. Every number is on the page before you call.

gpp\_good

### Ontario Building Code Part 9 Compliant

Every project meets OBC 9.13 dampproofing and 9.14 waterproofing requirements, with City of Toronto Building Division permit administration on major projects and plumbing permits filed for us to close out.

savings

### Toronto Subsidy Coordination

Registered Basement Flooding Protection Subsidy contractor. We file the paperwork so eligible homeowners recover up to $3,400 CAD toward sump pump, backwater valve, and pipe severance work.

workspace\_premium

### Written Workmanship Warranty

Every project ships with a written workmanship warranty and a written CAD scope, backed by 25+ years of GTA foundation waterproofing experience under Ontario Building Code Part 9.

Straight answers

## What Actually Stops Toronto Homeowners From Fixing a Wet Basement

### The estimate feels like a fishing expedition.

Some contractors quote $18,000 CAD for a job that needs $2,500. Our free in-home inspection identifies the actual cause and quotes only the scope needed, with the written diagnostic included so you can hold every other quote against it.

### I do not know if exterior or interior waterproofing is right.

Exterior addresses water at the source but requires excavation, at $15,000 to $35,000 CAD. Interior weeping tile manages water at the wall, at $8,000 to $18,000 CAD. We recommend based on foundation type, water source, and grading, in writing, with both numbers shown.

### Every waterproofer promises a warranty that is meaningless if they close.

Every project is documented in writing with a workmanship warranty and a written CAD scope, backed by 25+ years of continuous GTA foundation waterproofing experience under Ontario Building Code Part 9. The paperwork is what a buyer inspector will ask for later.

### The $3,400 subsidy sounds too good to be true.

The Toronto Basement Flooding Protection Subsidy is real: up to $3,400 CAD across a sump pump, a backwater valve, and pipe severance. We are a registered contractor and we file the paperwork with the permit and inspection records attached.

Our framework

## How Our Toronto Foundation Waterproofing Assessment Works, 5 Steps

The same five steps run on every job, from a single crack injection in a High Park rowhouse to a full perimeter system with City permits under a Willowdale detached home.

1.  1 calendar\_month
    
    ### Booking
    
    Postal code, symptom, and photos. A same-day slot where one is open. The in-home inspection is free.
    
2.  2 search
    
    ### On-site inspection
    
    Foundation walls, floor slab, cove joint, weeping tile, downspouts and grading, moisture readings, and camera inspection.
    
3.  3 description
    
    ### Written diagnostic
    
    Fault identified, scope required, CAD cost, and an interior versus exterior recommendation with the numbers beside it.
    
4.  4 build
    
    ### Scheduled
    
    Crack injection often same-visit. Interior weeping tile within 5 to 10 business days. Exterior with excavation and City permits.
    
5.  5 verified
    
    ### Verification
    
    Water test, moisture re-check, permit close-out, and the written workmanship warranty issued in writing.
    

## Not Sure Whether You Need a Repair or a Full System?

The free in-home inspection tells you which, in writing, with the CAD number beside it.

call (647) 254-5110

[tel:+16472545110 →](tel:+16472545110)

 

Book Free Inspection

[/contact/ →](/contact/)

Published CAD Pricing

## How Much Foundation Waterproofing Costs in Toronto (2026 CAD Bands)

Foundation waterproofing is not a packaged-tier product. It is scope-of-work priced by problem severity and system size. These are the four bands we quote from, published as 2026 CAD ranges so you can compare before you call.

### Diagnostic Band

$0 to $499 CAD

Find and quote the problem before anything is sold.

-   check Free in-home basement inspection: $0
-   check Foundation assessment with written report: $199 to $349 CAD
-   check Moisture diagnostic with camera inspection: $299 to $499 CAD

Most requested

### Standard Repair Band

$500 to $4,500 CAD

Targeted crack, joint, and component fixes.

-   check Polyurethane crack injection: $500 to $1,200 CAD per crack
-   check Cove joint repair: $95 to $185 CAD per linear foot
-   check Sump pump installation: $1,500 to $3,500 CAD
-   check Backwater valve: $2,000 to $4,500 CAD

### Major Repair Band

$4,500 to $18,000 CAD

Full-side or partial-perimeter systems.

-   check Interior weeping tile: $110 to $220 CAD per linear foot
-   check Interior full perimeter: $8,000 to $18,000 CAD
-   check Exterior partial wall: $4,500 to $12,000 CAD
-   check French drain: $85 to $175 CAD per linear foot

### Full System Band

$15,000 to $150,000 CAD

Complete foundation waterproofing and structural work.

-   check Exterior full perimeter: $15,000 to $35,000 CAD
-   check Interior and exterior combined: $20,000 to $45,000 CAD
-   check Foundation rebuild with waterproofing: $30,000 to $80,000 CAD
-   check Commercial projects: $25,000 to $150,000 CAD

Every quote itemises the diagnostic fee, materials, labour, permit, and disposal separately. The in-home inspection is free, and the Toronto Basement Flooding Protection Subsidy of up to $3,400 CAD is filed on your behalf for eligible sump pump and backwater valve work.

Customer Feedback

## What Homeowners Say After the Water Stops

Verified project feedback from Toronto and GTA homeowners. Names are shortened for privacy.

format\_quote

> Our basement in Leslieville took water through two foundation cracks every spring. The crew injected both with polyurethane and had us dry in one visit for about $1,600 CAD. The written diagnostic explained exactly what we were paying for.

Priya S.Leslieville

format\_quote

> We had interior weeping tile installed around the full perimeter of our North York bungalow. Three days of work, tied into a new sump pump, and the written workmanship warranty gave us confidence to finish the basement afterward.

Daniel R.North York

format\_quote

> They filed the Toronto Basement Flooding Protection Subsidy paperwork for our backwater valve and sump pump in Scarborough. We recovered a meaningful part of the cost and the plumbing permit was handled start to finish.

Grace O.Scarborough

![](/images/cta/two-crew-members-loading-drainage-pipe-and-tools-i.webp)

25+

Years waterproofing GTA foundations

13

Specialised waterproofing scopes

10

GTA service areas covered

$3,400

Maximum Toronto flooding subsidy filed, CAD

Our work

## Weeping Tile, Backwater Valves and Crack Injection, Mid-Job

Documentary photos from basements and foundation trenches across the GTA. Select any image to enlarge it.

 

 

Service coverage

## Serving Toronto and 9 More GTA Service Areas

Same-day dispatch across Toronto, York, and Peel, and next-day into Halton. Each area page covers the local foundation stock, from poured concrete and concrete block to the rubble stone walls under older Roncesvalles and Danforth homes, plus soil conditions and what that means for the scope you need.

Toronto Same-day arrow\_forward

[/service-areas/toronto/ →](/service-areas/toronto/)

 

North York Same-day arrow\_forward

[/service-areas/north-york/ →](/service-areas/north-york/)

 

Etobicoke Same-day arrow\_forward

[/service-areas/etobicoke/ →](/service-areas/etobicoke/)

 

Scarborough Same-day arrow\_forward

[/service-areas/scarborough/ →](/service-areas/scarborough/)

 

Vaughan Same-day arrow\_forward

[/service-areas/vaughan/ →](/service-areas/vaughan/)

 

Mississauga Same-day arrow\_forward

[/service-areas/mississauga/ →](/service-areas/mississauga/)

 

Brampton Same-day arrow\_forward

[/service-areas/brampton/ →](/service-areas/brampton/)

 

Markham Same-day arrow\_forward

[/service-areas/markham/ →](/service-areas/markham/)

 

Richmond Hill Same-day arrow\_forward

[/service-areas/richmond-hill/ →](/service-areas/richmond-hill/)

 

Oakville Same-day arrow\_forward

[/service-areas/oakville/ →](/service-areas/oakville/)

View all service areas

[/service-areas/ →](/service-areas/)

Find us Foundation Waterproofing Toronto Toronto, Ontario, Canada 

(647) 254-5110

[tel:+16472545110 →](tel:+16472545110)

-   Monday to Friday: 8:00 am to 6:00 pm
-   Saturday: 9:00 am to 4:00 pm
-   Sunday: Emergency calls only

Answers

## Foundation Waterproofing Questions Toronto Homeowners Ask

How much does foundation waterproofing cost in Toronto? expand\_more

Crack repair runs $500 to $1,800 CAD per crack. Interior weeping tile is $110 to $220 CAD per linear foot, or $8,000 to $18,000 for a full perimeter. Exterior waterproofing ranges $4,500 to $35,000 CAD by excavation scope. The in-home inspection is free.

What is the difference between interior and exterior waterproofing? expand\_more

Exterior uses a foundation membrane and drainage board installed after excavation, from $15,000 to $35,000 CAD, and is permanent. Interior weeping tile uses sub-slab drainage to a sump pump, from $8,000 to $18,000 CAD, is less invasive, and is warrantied.

Is the Toronto Basement Flooding Protection Subsidy real? expand\_more

Yes. The City of Toronto pays up to $3,400 CAD toward a sump pump ($1,750), backwater valve ($1,250), and pipe severance ($400). We are a registered contractor and file the paperwork on your behalf.

How do I know if my foundation crack is structural or non-structural? expand\_more

Non-structural cracks are vertical, hairline to 1/4 inch, and come from concrete shrinkage. Structural cracks are horizontal, stair-step, or wider than 1/4 inch and require engineering. A free inspection identifies which type you have.

How long does interior weeping tile installation take? expand\_more

A full-perimeter interior weeping tile job takes 3 to 5 business days: concrete removal on day 1, weeping tile and drainage board on day 2, the sump pump on day 3, and restoration on days 4 to 5.

What warranty is included? expand\_more

Interior weeping tile carries a written workmanship warranty. Crack injection carries a written workmanship warranty. Sump pumps carry a manufacturer warranty plus written workmanship warranty. Backwater valves carry a written workmanship warranty. All in writing.

Do you need a permit for foundation waterproofing in Toronto? expand\_more

Structural foundation repair requires Building Division permits. Interior weeping tile requires a plumbing permit. A backwater valve requires a plumbing permit and a Toronto Water pre-inspection. We handle all permits.

When should I get a wet basement inspection? expand\_more

Get an inspection when you see efflorescence, damp smells, cracks wider than a business card, water pooling near the foundation, or after any flooding. Also before finishing a basement or after buying an older home.

What causes basement flooding in Toronto? expand\_more

There are three main causes: surface flooding from grading or downspouts, sanitary sewer backup prevented by a backwater valve, and hydrostatic pressure prevented by weeping tile. An inspection identifies the cause.

Do you repair foundation cracks from the outside or inside? expand\_more

Both. Polyurethane and epoxy inject the crack from the basement side, which is faster and cheaper. Exterior repair uses a membrane and drainage board after excavation, which is permanent but requires digging.

What areas do you serve around Toronto? expand\_more

We serve the Toronto core, North York, Etobicoke, Scarborough, Vaughan, Mississauga, Brampton, Markham, Richmond Hill, and Oakville, with same-day GTA dispatch.

How do I know if my sump pump is working? expand\_more

Pour a bucket of water into the sump pit. The float switch should activate, the pump should run, and water should discharge outside. Test it twice yearly. We service, replace, and add battery backup pumps.

What is the best way to waterproof a foundation? expand\_more

It depends on where the water comes from. Exterior waterproofing with a Blueskin or Delta-MS membrane and new weeping tile stops water at the source but needs excavation, from $15,000 to $35,000 CAD. Interior weeping tile and a sump pump relieve hydrostatic pressure from inside for $8,000 to $18,000 CAD, and a single leaking crack only needs polyurethane injection from $500 CAD. Code-minimum damp-proofing on its own does not hold back water under pressure.

Is there a basement waterproofing contractor near me in the GTA? expand\_more

Our crews cover Toronto, North York, Etobicoke, Scarborough, Vaughan, Mississauga, Brampton, Markham, Richmond Hill, and Oakville, with same-day dispatch across Toronto, York, and Peel and next-day service into Halton. Send your postal code and photos through the contact form or call (647) 254-5110 to book the free in-home inspection.

### Still have a question about your basement

Book a free in-home inspection and we will answer it in writing, with the scope and the CAD price on the same page.

Book Free In-Home Inspection

[/contact/ →](/contact/)

![](/images/misc/two-crew-members-handing-a-written-25-year-transfe.webp)

Same-Day GTA Emergency Response

## Book the free in-home inspection and get the water source in writing

A written diagnostic names the fault, the scope, and the CAD price before any work is scheduled, and the Toronto subsidy is filed on your behalf where the scope qualifies.

calendar\_month Book Free In-Home Inspection

[/contact/ →](/contact/)

 

call Call (647) 254-5110

[tel:+16472545110 →](tel:+16472545110)

-   check\_circle Free in-home inspection with a written diagnostic
-   check\_circle Published CAD pricing before any work starts
-   check\_circle OBC Part 9 compliant, WSIB registered, $2M insured