• High Quality

  • Fast Service

  • 50 Year Guarantee

  • Financing Available

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Best time to contact you:

514 900 0910 (24/7)

About us

Since 1975, Delta Waterproofing has undertaken numerous household and property repair projects across the Montreal – Ottawa – Toronto corridor, as well as across Canada. We specialize in home waterproofing, crawlspace repair, foundation crack repair, mold removal, insulation and radon reduction.

We pride ourselves on customer satisfaction. When our clients call us to request an estimate or assessment, we do our best to meet the agreed-upon budget and to complete the work in a timely manner. Our highly-trained technicians use only the highest-quality tools and materials to ensure full customer satisfaction, and we guarantee our results will look as good as new.

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Years of experience


Projects completed

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Customer satisfaction

Our services


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Crawlspace Repair

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Foundation Crack Repair

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Mold Removal

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Foundation Stabilization

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Crawlspace Vapor Barrier

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These guys are amazing! They knew exactly what they needed to do to fix our leaking basement. Quick and easy process that we would recommend them to anyone in a heart beat. Professional and cleaned up after themselves- something that most tradies out there lack. Thank you

Dany, Ottawa

Excellent work! Guys are very professional and courteous. We had a drainage system installed. No hesitation to recommend. Don’t shop around, go directly to them.

James, Toronto

Delta Waterproofing’s personnel were very professional, very conscientious. They did an excellent job for us. I would recommend them to any owner. It was a pleasure to work with Armand and his staff. Thank’s a lot guys.

Julie, Montreal
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Our service area

Up to 100 km from Montreal, Ottawa and Toronto


  • Laval
  • Mirabel
  • Saint Jerome
  • Terrebonne
  • Vaudreuil-Dorion
  • Longueuil


  • Lanark
  • Leeds & Grenvile
  • Stormont, Dundas & Glengarry
  • Prescott & Russell