Toronto · GTA · Since 2010

Permanent Waterproofing & Concrete Restoration

Joint Seal is a Toronto-based company specializing in concrete rehabilitation and waterproofing. Tested to Ministry of Transportation Ontario standards, our applications are rated to last 25 years — more than doubling the useful life of repaired structures.

Get a Free Quote Call (647) 479-4069

Our Services

Concrete repair & waterproofing for any structure

We specialize in commercial and high-rise residential applications and provide lasting solutions for any concrete surface — including expansion joints and ledge beams.

Our Clients

Trusted by property managers, builders & institutions

A selection of the organizations we've delivered waterproofing and concrete restoration for across Toronto and the GTA.

Why Joint Seal

Built to last, installed from the inside

25-Year Materials

Industrial-strength, MTO-rated applications built to survive harsh Ontario conditions.

No Excavation

High-strength adhesives let us repair from inside pits and garages — saving cost and disruption.

Polyurea Membranes

Fast-curing, seamless waterproofing that restores full water impermeability.

Commercial & High-Rise

Trusted on parking garages, condo towers, hospitals, and airports across the GTA.

Repair Types

Specialized methods & materials

Cold Joint Repair & Waterproofing | Joint Seal Waterproofing

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Concrete Repair & Restoration Toronto | Joint Seal

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Concrete Crack Repair Toronto & GTA | Joint Seal

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Expansion Joint Repair & Injection Toronto | Joint Seal

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Industrial Floor Coatings Toronto & GTA | Joint Seal

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Industrial & Plant Concrete Repair Toronto | Joint Seal

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Overhead & Ceiling Concrete Repair Toronto | Joint Seal

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Concrete Patching & Thin-Patch Repair Toronto | Joint Seal

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Pipe & Cable Penetration Waterproofing | Joint Seal Waterproofing

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Polyurea Waterproofing Membranes Toronto | Joint Seal

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Testimonials

What clients say

“Joint Seal is our only elevator pit water-prevention specialist — a one-stop shop with excellent results for any type of pit. Great team, great communication. I'd recommend JSW any day of the week.”

John L.March Elevator, Toronto (ON)

“As the owner of multiple 100+ year-old homes in Toronto's west end, I've had more than one leaky basement. Joint Seal always comes up with the right solution — and their waterproofing actually works. I've never had a leak come back.”

Ryan Y.Toronto (ON)

From the field