Professional Service

Foundation Wall Construction Toronto & GTA

New poured concrete and block foundation walls — from rebuilds to new construction. Engineered, waterproofed, and built to OBC standards.

$8,000-$100,000+ 1-6 weeks 25-Year Warranty

Get Free Inspection Emergency: 437-545-0067

25-Year Warranty

Trusted Since 1999

BBB A+ Rated

$5M Insurance

WSIB Compliant

HomeStars Verified

Foundation wall construction in Toronto costs $150–$300 per linear foot for poured concrete walls (8–10 inch thickness), including footings, formwork, rebar, waterproofing membrane, and drainage tile.

Project Types

When You Need New Foundation Walls

Six common scenarios for foundation wall construction

FULL WALL REPLACEMENT

Existing wall severely deteriorated, bowed beyond repair, or crumbling. Must be rebuilt from footing up.

check_circle Wall bowed more than 2 inches
check_circle Structural cracks throughout
check_circle Severe concrete spalling
check_circle Failed waterproofing beyond repair

Typical Use

Common in 100+ year old homes with rubble foundations

NEW CONSTRUCTION

Building a home addition, garage, or accessory structure that needs below-grade walls.

check_circle Home additions with basements
check_circle Detached or attached garages
check_circle Workshop or studio buildings
check_circle Pool houses with storage below

Typical Use

New structural foundations for expansions

UNDERPINNING EXTENSION

When underpinning lowers the floor, new wall sections are poured below the existing footing level.

check_circle Lower basement floor for ceiling height
check_circle New wall from old footing to new footing
check_circle Tied into existing structure
check_circle Often combined with full underpinning

Typical Use

Extends walls downward during basement lowering

GARAGE FOUNDATION

New detached or attached garage needs frost-protected foundation walls.

check_circle Single or double car garages
check_circle Frost footings required (4 feet deep)
check_circle Walls to support slab and framing
check_circle Waterproofing for below-grade portions

Typical Use

Most common new foundation project

RETAINING WALLS

Grade changes, walkout terracing, or slope retention requiring structural concrete walls.

check_circle Sloped lot terracing
check_circle Walkout basement construction
check_circle Driveway grade retention
check_circle Landscaping structural support

Typical Use

Engineered for lateral earth pressure

COLD CELLAR / ROOT CELLAR REBUILD

Old stone or rubble foundations replaced with modern poured or block walls.

check_circle Replace deteriorated stone walls
check_circle Improve insulation and waterproofing
check_circle Increase headroom for storage
check_circle Modernize for safety and code

Typical Use

Common in century homes with crawl spaces

Construction Methods

Poured Concrete vs. Block vs. ICF

Understanding your foundation wall options

RECOMMENDED

POURED CONCRETE WALLS

Concrete poured into plywood or aluminum forms

$45-70/sq ft

Thickness

8" residential standard, 10" for deep basements

Strength

STRONGEST - monolithic structure

Water Resistance

BEST - fewest joints

Installation Speed

FASTEST - one pour operation

Best For

Most residential new construction and rebuilds

add_circle Pros

check Strongest against lateral soil pressure
check Most water-resistant (monolithic)
check Faster to pour than laying block
check Fewest potential leak points
check Rebar reinforced vertically and horizontally

remove_circle Cons

close Requires crane for forms
close More expensive than block
close Weather dependent for pouring
close Specialized equipment needed

CONCRETE BLOCK (CMU) WALLS

8" or 10" concrete masonry units laid with mortar

$35-55/sq ft

Thickness

8" standard, 10" for deeper basements

Strength

STRONG - when reinforced properly

Water Resistance

GOOD - requires proper waterproofing

Installation Speed

SLOWER - laid by hand course by course

Best For

Additions, garages, shorter walls, tight budgets

add_circle Pros

check No crane or forms needed
check Easier in tight access situations
check Lower material cost than poured
check Can work in stages
check Good for DIY-savvy homeowners

remove_circle Cons

close More joints = more potential leak points
close Slower to build than poured
close Weaker in lateral pressure than poured
close Requires skilled mason for quality

PREMIUM OPTION

ICF (INSULATED CONCRETE FORMS)

Foam forms that stay in place after concrete pour

$55-85/sq ft

Thickness

6-8" concrete core with 2-3" foam each side

Strength

STRONGEST - poured concrete with permanent bracing

Water Resistance

EXCELLENT - monolithic pour with insulation

Installation Speed

FAST - forms stay, no stripping

Best For

New construction focused on energy efficiency

add_circle Pros

check Superior insulation (R-22 to R-32)
check Built-in insulation - no separate step
check Strong as poured concrete
check Quiet basement - sound dampening
check Energy code compliance built-in

remove_circle Cons

close Most expensive option
close Specialized contractors needed
close Harder to modify after installation
close Foam must be protected above grade

10-Step Process

Our Foundation Wall Construction Process

Engineering & Design

Structural engineer (P.Eng) designs wall thickness, rebar spacing, and footing size based on soil bearing capacity and lateral earth pressure calculations. Engineering drawings are prepared and submitted for building permit application. This ensures the wall meets OBC structural requirements and will safely support the loads above.

Building Permit Application

Building permit is required for all foundation wall work in Ontario. DrySpace handles the complete permit application process, including submission of engineering drawings, site plans, and OBC compliance documentation. Typical processing time is 2-4 weeks depending on municipality workload.

Excavation

Excavate to footing depth - must be below frost line (4 feet in Toronto). Shore adjacent structures if close to property line or existing foundation. Install dewatering system if high water table is present. Remove all unsuitable soil and prepare base for footings.

Footing Pour

Strip footings are typically 20" wide x 8" deep for residential walls. Continuous rebar is placed in footing with vertical dowels that will tie into wall reinforcement. Footing must be level and square - accuracy here determines wall quality. Concrete cures 24-48 hours before wall construction begins.

Wall Construction

POURED: Set forms, place rebar cage, pour concrete, vibrate to consolidate and remove air pockets, strip forms after 24 hours. BLOCK: Lay block courses with Type S mortar, install rebar in cells vertically, place bond beams with horizontal rebar every 4th course, grout all cells. ICF: Stack interlocking foam forms, brace securely, pour concrete, vibrate.

Waterproofing Application

This is where DrySpace's waterproofing expertise makes the difference. We apply rubberized membrane (NOT just tar damp-proofing) to all exterior below-grade surfaces. Drainage board (dimpled membrane) is installed over waterproofing to protect it and channel water down to weeping tile. This is a permanent waterproofing system, not a temporary moisture barrier.

Drainage System Installation

Weeping tile (4" perforated pipe) is installed at footing level around entire perimeter. Filter fabric sock prevents clogging from sediment. Pipe is connected to sump pit or storm drain with positive slope for gravity drainage. Clear gravel backfill (3/4" stone) surrounds drain for water collection.

Backfill & Grading

Granular backfill (clear stone) is placed against wall for first 12 inches to facilitate drainage. Native soil backfill is compacted in 12-inch lifts to prevent settlement. Final grade is sloped away from wall at minimum 2% slope to direct surface water away from foundation.

Above-Grade Finishing

PARGING: Two coats of parging cement applied to exposed above-grade foundation for protection and appearance. CAPPING: Flashing or concrete cap on top of wall prevents water entry. SILL PLATE: Pressure-treated lumber anchored with J-bolts embedded in concrete for framing connection above.

Municipal Inspections

Three inspections required: 1) Footing inspection before pouring wall, 2) Pre-pour/pre-backfill inspection of wall reinforcement and waterproofing, 3) Final inspection after backfill and grading complete. DrySpace coordinates all inspection scheduling and ensures work meets inspector requirements.

Exterior Finishing

Parging & Above-Grade Finishing

Protecting and beautifying your foundation walls

What Is Parging?

Definition: Cement-based coating applied to exterior foundation walls above grade

Why Parge?

check_circle Protects concrete/block from freeze-thaw cycles
check_circle Hides imperfections and creates uniform appearance
check_circle Acts as waterproofing barrier for above-grade exposure
check_circle Improves curb appeal

$8-15/sq ft

Above-grade parging

Lifespan: 15-25 years before requiring re-parging

Parging Process

1 Clean wall surface of dirt, oil, loose material
2 Apply bonding agent (concrete primer)
3 First coat (scratch coat) 3/8" thick with horizontal scratches
4 Cure 24-48 hours keeping damp
5 Second coat (finish coat) 1/4" thick, trowel smooth or texture
6 Cure minimum 7 days before painting

When Do You Need Re-Parging?

arrow_forward

Existing parging cracking and falling off

arrow_forward

New foundation walls above grade

arrow_forward

After foundation repair or replacement

arrow_forward

Before selling home (curb appeal)

Transparent Pricing

Foundation Wall Construction Costs

All-inclusive pricing with engineering and permits

Project	Cost Range	Notes
Full wall replacement (one wall, 30 LF x 8'H)	$15,000 - $30,000	Demo, new footing if needed, wall pour, waterproofing, drainage
Full wall replacement (full perimeter)	$50,000 - $100,000+	Major project - often combined with underpinning
New garage foundation (single car)	$8,000 - $15,000	Walls + footing + slab
New garage foundation (double car)	$12,000 - $22,000	Walls + footing + slab
Addition foundation	$15,000 - $35,000	Size and depth dependent
Retaining wall (per linear foot)	$200 - $500/LF	Height and engineering dependent
Parging (above grade walls)	$8 - $15/sq ft	Two-coat application
ICF wall construction	$55 - $85/sq ft	Premium insulated option
Engineering drawings (P.Eng stamped)	$2,000 - $4,000	Structural calculations and permit drawings
Building permit	$500 - $1,500	Municipality and project size dependent

Single Wall Replacement

$15,000-$30,000

Most common repair scenario

One wall (30 LF x 8'H typical)
Structural engineering
New footing if needed
Poured concrete wall
Full waterproofing system
25-year warranty

Get Quote

New Garage Foundation

$8,000-$22,000

Single or double car garage

Complete foundation walls
Frost-protected footings
Concrete slab included
Permit and engineering
Waterproofing below grade
10-year warranty

Get Quote

Full Perimeter Replacement

$50,000-$100,000+

Major foundation rebuild

All four walls replaced
Often combined with underpinning
Complete waterproofing
New drainage system
Full engineering & permits
25-year warranty

Get Quote

GTA Coverage

Foundation Wall Service Areas

Professional foundation construction across the Greater Toronto Area

Toronto

Scarborough

Etobicoke

North York

Mississauga

Brampton

Vaughan

Markham

Oakville

Burlington

Richmond Hill

Ajax

Pickering

Oshawa

NEED A STRUCTURAL FOUNDATION ASSESSMENT?

Free on-site evaluations for wall replacement and new construction

437-545-0067 - FREE ASSESSMENT

Completed Projects

Real waterproofing solutions for Greater Toronto Area homes

NORTH YORK BASEMENT WATERPROOFING

NOVEMBER 2024 5 DAYS

BEFORE

AFTER

DRAG

Problem Identified

Severe water infiltration and mold growth

Solution Implemented

Complete exterior waterproofing with French drain

Project Cost

$12,500

Get Quote

SCARBOROUGH FOUNDATION REPAIR

OCTOBER 2024 3 DAYS

BEFORE

AFTER

DRAG

Problem Identified

Foundation cracks and basement flooding

Solution Implemented

Crack injection and interior waterproofing system

Project Cost

$8,200

Get Quote

MISSISSAUGA EMERGENCY WATER REMOVAL

SEPTEMBER 2024 24 HOURS + 4 DAYS

BEFORE

AFTER

DRAG

Problem Identified

Flooded basement after heavy rainfall

Solution Implemented

Emergency pumping and waterproofing installation

Project Cost

$15,000

Get Quote

Have a Similar Problem?

Get your free inspection and professional quote today

Schedule Free Inspection Call: 437-545-0067

Why Choose Dryspace

Compare our services to other waterproofing contractors

Service Features	DRYSPACE RECOMMENDED	Other Companies
Lifetime Transferable Warranty	YES	Limited
24/7 Emergency Response	YES	NO
Free Detailed Inspection	YES	YES
Price Match Guarantee	YES	NO
Insurance Claim Assistance	YES	Extra Fee
Licensed & Insured	YES	YES
Response Time	< 60 MIN	2-4 hours
Years in Business	25+ YEARS	Varies
Financing Options	YES	Limited
Follow-up Service	YES	NO

Lifetime Protection

Our warranty transfers to new homeowners, protecting your investment

Rapid Response

Emergency team on standby 24/7 with less than 60 minute response time

5-Star Service

Delivering 5-star service since 1999

Guaranteed Work

We stand behind our work with comprehensive guarantees

Our Promise to You

We protect homes and families with transparent pricing, expert technicians, and a commitment to excellence. Your basement stays dry for life - guaranteed.

Testimonials

Customer Reviews

Verified testimonials from Greater Toronto Area homeowners

Google Verified

GTA Homeowners

Emergency Waterproofing

Verified

"After spring flooding, Dryspace responded within 2 hours. Their team was professional, thorough, and the 25-year warranty gives us peace of mind."

Sarah Chen

Toronto November 2024

Exterior Waterproofing

Verified

"They helped us get the maximum government rebate and handled all the paperwork. Saved us over $3,400 on our exterior waterproofing project!"

Michael Rodriguez

Mississauga October 2024

Foundation Repair

Verified

"Professional from start to finish. The crew was respectful of our property, cleaned up daily, and finished on schedule. Highly recommend!"

Jennifer Park

Vaughan October 2024

Sump Pump Installation

Verified

"Our basement has been dry for 3 years now. The sump pump system they installed works flawlessly, even during heavy storms."

David Thompson

Markham September 2024

Interior Waterproofing

Verified

"Best decision we made for our home. The interior waterproofing solution was less invasive than expected and works perfectly."

Lisa Anderson

Brampton September 2024

Foundation Crack Repair

Verified

"Fair pricing, excellent communication, and quality work. They fixed foundation cracks that two other companies said needed major work."

Robert Kim

North York August 2024

Get Free Inspection Read More Reviews

Technical Drawings & CAD Details

Professional construction details for contractors and engineers

4 AutoCAD Files

2 PDF Documents

2 SketchUp Models

DWG

FOUNDATION SYSTEMS

EXTERIOR WATERPROOFING DETAIL

Complete exterior membrane application with drainage board

Includes:

• Foundation wall detail
• Membrane application layers
• Drainage board installation
• Gravel bed specifications

Download DWG (2.4 MB)

DWG

DRAINAGE SOLUTIONS

INTERIOR DRAINAGE SYSTEM

Weeping tile and sump pump configuration

Includes:

• Weeping tile placement
• Sump pit dimensions
• Discharge piping layout
• Backfill requirements

Download DWG (1.8 MB)

PDF

REPAIR METHODS

FOUNDATION CRACK REPAIR

Injection repair methodology and specifications

Includes:

• Crack preparation steps
• Injection port spacing
• Material specifications
• Quality control checklist

Download PDF (856 KB)

SKP

MECHANICAL SYSTEMS

SUMP PUMP INSTALLATION

3D model of complete sump pump system

Includes:

• 3D sump pit model
• Pump placement options
• Battery backup configuration
• Discharge line routing

Download SKP (3.2 MB)

DWG

DRAINAGE SOLUTIONS

FRENCH DRAIN ASSEMBLY

French drain installation with grading details

Includes:

• Trench dimensions
• Pipe specifications
• Filter fabric placement
• Grading requirements

Download DWG (1.5 MB)

PDF

PLUMBING SYSTEMS

BACKWATER VALVE DETAIL

City-compliant backwater valve installation

Includes:

• Valve placement requirements
• Access box specifications
• Permit requirements
• Inspection checklist

Download PDF (1.1 MB)

SKP

DRAINAGE SOLUTIONS

WINDOW WELL DRAINAGE

3D window well with drainage system

Includes:

• Well dimensions guide
• Drainage pipe connection
• Gravel bed depth
• Cover specifications

Download SKP (2.7 MB)

DWG

STRUCTURAL DETAILS

FOUNDATION WALL SECTIONS

Comprehensive foundation wall construction details

Includes:

• Concrete specifications
• Rebar placement
• Waterproofing layers
• Insulation options

Download DWG (4.1 MB)

Usage Rights

• Free for commercial and residential projects

• Modify as needed for specific applications

• Include in project submissions and permits

• Share with team members and subcontractors

Technical Support

Engineering Department

Monday - Friday: 8:00 AM - 5:00 PM

Email: p.vysotckii@gmail.com

Phone: 437-545-0067 ext. 200

Need Custom Drawings?

Our engineering team can create project-specific details and specifications

Request Custom CAD Details Call Engineering: 437-545-0067

Common Questions

Frequently Asked Questions

Everything you need to know about foundation wall construction

How long does it take to build a foundation wall? expand_more

A single wall replacement typically takes 1-2 weeks from excavation to backfill. A full perimeter foundation can take 3-6 weeks depending on complexity and weather. Add 2-4 weeks for permit processing before work begins. The timeline breaks down as: permit (2-4 weeks), excavation (1-2 days), footing pour and cure (2-3 days), wall construction (1-3 days depending on method), waterproofing (1 day), drainage and backfill (1-2 days).

Poured concrete or block - which is better? expand_more

Poured concrete is stronger and more water-resistant because it's monolithic (one piece) with fewer joints. Block is more affordable and works better in tight access situations where cranes can't reach. For basements and below-grade foundations, we strongly recommend poured concrete. For above-grade garages or additions where waterproofing is less critical, block can be a cost-effective choice. Poured concrete costs 20-30% more but provides superior performance long-term.

Can you replace just one wall of my foundation? expand_more

Yes. This is common for walls that are bowed or severely deteriorated while other walls remain sound. We install temporary shoring and bracing to support the structure above, carefully remove the failing wall section, and pour a new reinforced concrete wall tied into the existing footings and adjacent walls. The new section is engineered to match or exceed the strength of the original foundation. This selective replacement is often more cost-effective than full foundation replacement.

What's the frost depth in Toronto? expand_more

4 feet (1.2 meters) below grade. All footings must be below frost depth to prevent frost heaving, which can crack foundations and lift structures. This is why residential basement footings are typically 4-5 feet below finished grade. Shallow footings above the frost line will heave during winter freeze-thaw cycles, causing structural damage. The frost depth varies across Ontario - northern regions require deeper footings (up to 6 feet).

Do you do parging only? expand_more

Yes, we offer standalone parging services for above-grade foundation walls. This is common when existing parging is cracking, falling off, or homeowners want to improve curb appeal before selling. We charge $8-15 per square foot for a two-coat parging application, which includes surface preparation, bonding agent, scratch coat, and finish coat. Parging should be done every 15-25 years as preventative maintenance to protect the concrete from freeze-thaw damage.

How do I know if my foundation wall needs replacement vs repair? expand_more

If cracking is minor (hairline cracks, few in number) and walls are plumb (not bowed), repair is usually sufficient and cost-effective. Replacement is necessary when: walls are bowed more than 2 inches, concrete is crumbling or severely spalling, multiple large structural cracks exist, the wall is leaning, or it's an old stone/rubble foundation. A bowed wall indicates soil pressure has exceeded the wall's strength - repair won't fix the underlying structural deficiency. We offer free assessments and provide honest recommendations on repair vs replacement.