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What Makes Our Warranty So Dependable?

We’re pioneers in the industry with over 40 years of experience and 10,000+ issued waterproofing warranties to date. We dont just issue a document but truly provide the most reliable and time-tested waterproofing warranty available today in the GTA.
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We Are The Originals

We’re home of the original transferable warranty. Beware of imitators and empty warranty promises.
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A 40+ Year History

We are a four-decade family business and no one has been waterproofing and underpinning in the GTA longer.
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Truly Family Owned

GJ MacRae is truly a family owned and operated waterproofing and foundation repair company.
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10,000+ Warranties

With over 10,000+ warranties issued to date no other company can match our degree of waterproofing dependability.
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Our Only Specialty

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

With four decades in the trenches you can trust our specialized knowledge. Let our longevity work for you!
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Industry Pioneers

We were the first contractors in the GTA to introduce the distinctive overflow underpinning method.
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Customer Service

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

Nearly half a century in business, were in it for the long run. No quick fixes here, only lasting results.
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We Love What We Do!

Yes, we truly love what we do! Basement waterproofing, foundation repair and underpinning are our forté!

SINCE 1975

Our Awards

A warranty is only as meaningful as the company that issues it. We don’t simply issue a document, we issue a true guarantee.
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