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Why Choose Our Warranty?

A warranty is only as valuable as the paper it’s printed on. With over half a century of combined experience, we carry the most valuable warranty in the business; no one has stood the test of time longer than GJ MacRae.

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We Are The Originals

Home of the original 15 year transferable warranty. Beware of imitators and empty-warranty promises.
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A True 40 Year Legacy

A true four-decade legacy, no one has been waterproofing and underpinning in the GTA longer than us.
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Family Owned and Operated

A truly family-owned and operated waterproofing and underpinning service in the GTA. Often imitated never duplicated.
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Over 10,000+ Warranties Issued

Yes, you read that right. Surpassing over 10,000 certified warranties issued, no other company has our level of expertise.
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Our First and Only Specialty

This is all we do! We started in 1975 and continue to lead the industry with quality work and guaranteed results.
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Knowledge and Longevity

Four decades and 10,000+ warranties later… trust our specialized knowledge and let our longevity work for you!
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Industry Pioneers

We were the first to introduce and develop the residential ‘overflow’ Vibro-Pak underpinning process.
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Exceptional Customer Service

Award winning customer service, quick response times and free estimates make us the perfect fit for your project.
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We’re Here For The Long Run

After decades in the business, we are in it for the long run! We don’t provide quick fixes, we provide lasting results.
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We Love What We Do!

Yes, we truly love what we do. Heritage restoration, waterproofing, underpinning and structural repairs are our forte.

SINCE 1975

40 YEARS AND COUNTING

Our Awards

A warranty is only as meaningful (and valuable) as the company that issues it. We don’t issue a document, we issue a guarantee. We’re the longest active waterproofing and structural foundation repair company in the GTA, it’s really that simple.
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Underpinning a Century Home

Complete underpinning detail with combined structural I-BEAM replacement and installation within a heritage structure in west-end Toronto. more

Interior Weeping Tile System Installation

The complete installation of a 4″ interior weeping tile system combined with a sump box and sump pump. more

Sump Pump Installation

1/3hp cast iron oil-cooled sump basin and pump installation with a 12VDC battery-backup system (with combined current alarm). more

Garage Floor Installation

Installation of a fresh concrete garage floor at 32MPA with exterior expansion joint integration at a dimension of approximately 30ft x 25ft. more

Addition vs Underpinning?

What is the difference between building an addition vs underpinning? Why is underpinning more advantageous? more

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WE ARE THE ORIGINAL

full service basement waterproofing and structural foundation repair specialists in the gta.

OR CALL US AT
(905) 824-2557