Repairing Foundation Cracks

Wednesday, May 8th, 2019 by Ben Bates


Crack repair options Foundations London Windsor Chatham SarniaFoundation cracks are a common problem in homes across all of southwestern Ontario. While some cracks may be a telltale sign of a structural problem, small cracks are often a result of settlement and the natural concrete curing process.

However, even tiny foundation cracks can be a serious problem as they are an easy way for water to enter your home!

Do you have cracks in your foundation? Do you have water entering your basement from a crack in your foundation? If the crack does not pose a structural threat, we recommend our patented, warrantied and permanent solution: The FlexiSpan® Foundation Crack Repair System.

Here’s how it works:

Installation of a Drainage System Or Drywell: If you're waterproofing your basement with our WaterGuard® or another interior drainage system, the FlexiSpan® can be integrated with it to direct any potential leaks to your sump pump. Otherwise, a small dry well about 5-10 gallons in size is created at the base of the crack.

The Polyurethane Sealant: We start by sealing the crack with a high-viscosity polyurethane material. This gets deep in the cracks to form a durable, flexible seal.

Secondary Drainage Strategy: The sealant should never fail if it ever does, and to ensure a proper repair, we install a secondary layer of drainage on the basement wall -- one that will direct water to your basement drainage system or dry well.

Finish the Repair: To keep your foundation walls looking great and depending on your needs, we either overlay your sealed wall crack with a polyurethane sealant, which is light gray in colour, matching your foundation walls, or we install a vapour barrier as an additional layer of protection.

Restore the Floor: After the wall crack has been repaired, the concrete floor is restored flush, with no gaps or openings. We pride ourselves in leaving our workplace clean and neat. The end result of the FlexiSpan® installation is a professional-looking, top-performing basement wall crack repair that includes a written warranty.

Check out this video to see the entire process of installing FlexiSpan®.


To arrange for your complimentary inspection and estimate for repair, please reach out to us at: 1-866-277-1277 or click here to submit your information to us online.

About the author
Ben Bates lives in the Chatham-Kent area and has been involved in the basement, crawl space and foundation industry since 2008. He has a passion for improving homes the right way and knows what it takes to waterproof, encapsulate or stabilize homes in Ontario. He assists with over 900 projects per year.

our service area

We serve the following areas

  • Aylmer
  • Beachville
  • Bright
  • Burford
  • Burgessville
  • Cathcart
  • Clear Creek
  • Courtland
  • Delhi
  • Eden
  • Embro
  • Erieau
  • Fingal
  • Harley
  • Harrietsville
  • Hickson
  • Innerkip
  • La Salette
  • Langton
  • Morpeth
  • Mossley
  • Mount Elgin
  • Mount Pleasant
  • Norwich
  • Oakland
  • Otterville
  • Plattsville
  • Port Burwell
  • Port Rowan
  • Port Stanley
  • Princeton
  • Salford
  • Scotland
  • Springford
  • St George Brant
  • St Thomas
  • St Williams
  • Straffordville
  • Teeterville
  • Tillsonburg
  • Turkey Point
  • Union
  • Vanessa
  • Vienna
  • Vittoria
  • Wallacetown
  • Walsingham
  • Waterford
  • Wilsonville
  • Windham Centre
Our Locations:

Advanced Basement Systems
23576 Prince Albert Road
Chatham, ON N7M 5J7
1-226-706-2439


Advanced Basement Systems
199 Exeter Rd Unit E
London, On N6L 1A4
1-226-270-8565
Coverage Area: Southwestern Ontario