• Toronto’s Basement Waterproofing and Foundation Repair Professionals

    As a family-owned waterproofing and foundation repair business with over 30 years of experience in Toronto, we are proud of our work and stand by it with a full warranty. We’re a service company, working for you. We make sure our customers understand the entire building and repair process, and ensure that our work is done properly and made to last.

Schedule a Free Estimate


Welcome to Nusite

With Over 50 years of combined experience in Waterproofing, Underpinning and Commercial Foundation Services in Toronto, we have the knowledge, skills and experience to handle every aspect of your project.

As a locally owned, family run business, we offer a wide array of experience and knowledge in waterproofing and foundation projects to deliver top quality workmanship and guarantee it is done correctly and to building code.

Why Choose Nusite

As a family owned business with over 30 years of experience providing basement waterproofing in Toronto, we are proud of our work and stand by it with a full warranty. We’re a service company, working for you. We make sure our customers understand the entire building and repair process and ensure that our work is done properly and made to last.

  • Fully insured and certified. Fully covered by WISB
  • Free, no obligation estimates
  • On time and on budget, every time
  • Long Standing A+ Rated BBB Accredited Business
  • Written guarantee on all work preformed
  • Flexible financing available, including 0% financing


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Latest From Our Blog

Finished Basement After Digging out Basement

Are Foundation Cracks Dangerous?

Foundation cracks in Toronto are common due to the age of the housing in the GTA, as well as the weather (rain-snow-freezing-thawing).  Foundation cracks develop over time for a variety of reasons and leads to basement water leaks as water…
Exterior Basement Waterproofing Project in Toronto-Scarborough

What is the Best Basement Waterproofing System?

When it comes to waterproofing your basement in Toronto, there are three common methods. These are exterior waterproofing, interior weeping tile, and crack injection.  Which one you use will depend on your home, any surrounding obstacles as…
Interior Weeping Tile Systsems Toronto

Does Interior Basement Waterproofing Work?

When it comes to waterproofing your basement there are two ways to go which are interior and exterior methods. Interior waterproofing works, particularly the weeping tile method but exterior waterproofing is still the best option available as…
Old stone foundation in Toronto home

Can I Waterproof an Older Foundation?

Do you have an old foundation that is leaking water?  Due to the age of many Toronto homes, leaking basements are a common problem, especially in homes with older foundations. Foundations really only become a waterproofing problem if there’s…
Creating a window well as a means of egress

Why Your Window Well Is Causing Basement Leaks

Is your window well causing your basement to leak? Window wells are a common cause of a leaking basement.  Over the years, we've responded to thousands of leaky basement calls in Toronto and many of them had the window well to blame.  From…
Finished Basement After Digging out Basement

What You Need To Know Before Digging Out Your Basement

Digging out a basement (also known an Underpinning or Basement Lowering) can be an ideal way to add some room or additional living space to your home and can often be less expensive than adding room by going upward or outward, which usually…


Jeffrey Leal of Nusite Waterproofing found my problem within minutes of examination my basement; a broken drain pipe leading from my kitchen above. No foundation problem. No charge.

A previous Company was talking about the possibility of groundwater coming up through my concrete floor; major costs discussed.

Thank you Jeffrey.

Homestars Review-Basement Waterproofing

Cecil Lindo

I had recently purchased an older home in Toronto. The basement had a running leak from the cold room into the basement. After receiving quotes from many other Waterproofing companies, I found David and Ryan to be honest, fair and trustworthy for the job. Everything explained very clearly, work done on time and the crew cleaned up the area very well on their way out. Happy to refer to Nusite.

Homestars Review-Basement Waterproofing

Michael Oziel

Our basement leaked! Of course . . . we bought a 100 year old house! But my office needed to be in the basement permanently. I interviewed 10 different companies until we decided on the Steinbergs and their crew at Nu-Site! They are professional, reliable, courteous, honest, and they really make an effort to communicate with the client about every step of the process.

Homestars Review-Basement Waterproofing

Mark Lipton

After several years of chronic leaks, we decided to have our basement waterproofed once and for all. The team over at Nusite was professional, answered my questions during the project and stayed within their quoted price….which is always a concern for me when working with contractors. Great job overall

Homestars Review-Basement Waterproofing

Sara Jack

Basement Waterproofing in Toronto & GTA

Nusite Waterproofing has been providing basement waterproofing services in Toronto for over 30 years.  We specialize in foundation work for both residential and commercial applications. We provide free in-home estimates and multiple payment options for any budget.  We are a professional team that strives to provide the best service to our customers.  Contact Nusite Waterproofing today to schedule a no obligation free estimate.

  • Basement Waterproofing
  • Basement Lowering / Underpinning
  • Foundation Repairs
  • New Foundations
  • Commercial Waterproofing
  • Professional Foundation Packages For New Construction


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