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Can I fix my foundation crack by injecting it with epoxy, urethane or other compound?

Vertical Foundation cracks are the most common cause of leaks in your basement. They are generally a result of structural shifting or something done after the fact causing pressure on the wall from the exterior like a tree (or simply improper rebar installation, bad concrete mix, bad weather when pouring etc.).  A crack in your foundation can be from a number of reasons, that’s why it’s important to have it properly inspected by a trained professional.  If your foundation has a horizontal crack, it could signify something structurally wrong and may need proper attention from a structural professional.

Cracks are most common on the bottom corner of basement windows formed into the concrete or on new homes (under 2 years when all the settlement happens). Of all the types of walls; concrete walls are the only type of wall that can be injected to stop the water. However there are many drawbacks to installing this type of system and after many years in the business, we have seen plenty of failed injections.

When it comes to injecting your foundation with any sort of resin/epoxy/urethane type kit you should understand a few things:

  1.       You cannot inject any other type of wall other than a concrete wall limiting you if you have a stone, block or brick wall (you cannot inject these types of walls)
  2.      Injections without proper protective masks and personal protection can be harmful to you, most installers may not take proper precautions (mixing resins or using products on the interior of your home to form an expanding compound can produce harmful fumes)
  3.      Epoxy is a mix between a resin and a hardener this can lead to a few issues like:
  •   This liquid, if not hardened fast enough, can seep into surrounding areas and leave voids in the crack being repaired (especially at the top of a crack as like anything, gravity will play its course)
  •  This may lead to an irregular application causing your problem to recur even though it looks perfect from the inside
  •     Re-injecting a previously injected crack is borderline impossible as the voids, gaps cracks and pockets in the previous resin may not be filled properly and we cannot see them
  •     If the crack is actively leaking, the water entering may not allow the product to work properly (just like we cannot apply waterproofing materials to wet walls)
  •     The foundation shift causing the crack may move further, more often than not creating a crack in the crack injection (the most common reason for it to fail)
  •   Most products can only handle a gap no greater than 1/16th of an inch
  •   If the crack expands once injected, only a proper exterior solution will stay flexible and move with the wall shift keeping a seamless membrane in tact (ie. The Aqublock and Yellow-Jacket process we use)

 Even with the best polyurethane polymer compounds that promise to stay flexible and work with the shift, they cannot guarantee 100% success. Most injection companies will up sell a secondary barrier channeling water under the floor “in-case” the injection fails (that shows true confidence in the product!)

 WE LIVE IN CANADA, IT SNOWS AND FROST DESTROYS EVERYTHING, WITHOUT FROST PROTECTION THE PRODUCTS ARE BOUND TO FAIL, EVERYTHING IN YOUR HOME ENVELOPE NEEDS FROST PROTECTION!

 Everything in construction is frost protected, Yes, even the exterior waterproofing has a drainage board giving the ground something to freeze to protect the wall, tar, and mesh system in place!

What is important with foundation cracks is to determine if it is a major structural issue. Is there already an injection there that has failed? What type of product are they injecting? Most exterior solutions and products applied are not that much more costly than an interior injection and come with a proven track record and warranty. To speak with a representative about injecting versus any other method we would be happy to explain this to you in a free consultation. Contact us here to set an appointment.

Posted in: Waterproofing

Why choose nusite for your next waterproofing project

FULLY INSURED AND CERTIFIED. FULLY COVERD BY WSIB

A+ BBB RATING FOR OVER 20 YEARS

FREE,NO OBLIGATION ESTIMATES
WRITTEN GUARANTEE ON ALL WORK PERFORMED
ON TIME AND ON BUDGET, EVERYTIME

FLEXIBLE FINANCING AVAILABLE, INCLUDING 0% FINANCING

Customer Testimonials

Interested in working with us? Check out some of our customer testimonials below and find more on Homestars. We are one of the highest rated basement waterproofing companies in Toronto

Mark Lipton - Homestars Review

Basement Waterproofing

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.

Sara Jack - Homestars Review

Foundation and Waterproofing Repairs

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

Joshua Persaud - Yellowpages Review

Basement Waterproofing

Had several cracks in my basement wall and they would leak whenever we had a heavy rain. It started about a year and a half ago and seems to have gotten worse over the past 6 months. I tried having my neighbor seal it, but it started leaking again within a few weeks. Called several waterproofing companies and got several quotes. Finally went with Nusite contractors for the job. They gave a reasonable quote and I liked the guy that came by for the estimate. They stayed within budget and cleaned up before they left. It's been almost 3 months now and it seems to be working great.

Why choose nusite for your next waterproofing project

FULLY INSURED AND CERTIFIED. FULLY COVERD BY WSIB

A+ BBB RATING FOR OVER 20 YEARS

FREE,NO OBLIGATION ESTIMATES
WRITTEN GUARANTEE ON ALL WORK PERFORMED
ON TIME AND ON BUDGET, EVERYTIME

FLEXIBLE FINANCING AVAILABLE, INCLUDING 0% FINANCING

Customer Testimonials

Interested in working with us? Check out some of our customer testimonials below and find more on Homestars. We are one of the highest rated basement waterproofing companies in Toronto

Mark Lipton - Homestars Review

Basement Waterproofing

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.

Sara Jack - Homestars Review

Foundation and Waterproofing Repairs

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

Joshua Persaud - Yellowpages Review

Basement Waterproofing

Had several cracks in my basement wall and they would leak whenever we had a heavy rain. It started about a year and a half ago and seems to have gotten worse over the past 6 months. I tried having my neighbor seal it, but it started leaking again within a few weeks. Called several waterproofing companies and got several quotes. Finally went with Nusite contractors for the job. They gave a reasonable quote and I liked the guy that came by for the estimate. They stayed within budget and cleaned up before they left. It's been almost 3 months now and it seems to be working great.