Our Services
Exterior Crack Repair
Exterior crack repair addresses the foundation wall from outside — the right call in specific situations, and a core service CrackStop performs regularly.
How Exterior Crack Repair Works
Exterior crack repair involves excavating alongside the foundation wall to expose the crack from the outside. The crack is cleaned, filled, and a waterproofing membrane is applied directly to the exterior face of the wall to prevent water infiltration.
This approach addresses both the structural crack and the waterproofing layer on the outside of the wall simultaneously. In situations where the exterior membrane has failed — or where interior access would require significant disruption to a finished basement — exterior repair is often the more practical route.
Exterior repair is not a fallback or a secondary option. It is a core service that CrackStop recommends when it is the right fit for the home and the problem.
Exterior Repair
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When Exterior Repair Often Makes Sense
- Heavily finished basement — interior access requires drywall or flooring removal
- The exterior waterproofing membrane has failed and needs replacement
- Exterior access is clear — no decks, patios, or obstructions
- Crack location or type is better addressed from outside
- Homeowner prefers no interior disruption
- Multiple issues on the exterior wall face
- Wall condition warrants external inspection and treatment
- Permit or site conditions favour exterior approach
When Interior Repair May Be the Better Fit
- Exterior access is restricted — decks, patios, fences, or tight clearances make excavation impractical
- Unfinished basement where interior access is straightforward and low-cost
- Budget constraints where interior injection is significantly less expensive
- Crack type and location respond well to interior injection approach
We'll assess your specific situation and tell you honestly which approach makes more sense for your home.
The Exterior Repair Process
Site Assessment
We assess the exterior access conditions, confirm excavation is feasible, and identify the full extent of the crack and membrane condition.
Excavation
We excavate alongside the foundation wall to expose the exterior face of the wall at the crack location.
Crack Cleaning & Repair
The crack is cleaned, prepared, and filled to close the structural gap in the wall.
Waterproofing Membrane
A waterproofing membrane is applied to the exterior wall face to prevent future water penetration through the repaired and surrounding areas.
Backfill & Restoration
The excavated area is backfilled and the site is restored to as close to its original condition as possible.
Exterior repair performed alongside drainage improvements may fall within RainWise program criteria in some cases — subject to how the project is structured and submitted for approval before work begins. Learn how RainWise-aligned projects are structured.
Wondering if interior repair is a better fit?
Compare the two methods and see when each makes more sense.
Related Pages
Not sure if exterior repair is right for your home?
We'll assess your situation, check access conditions, and give you a straight recommendation — free, no pressure.
Our Customers Love Us
What People are Saying…
Extremely Knowledgeable!
"Great experience! Darren was the most experienced and professional person we met out of 5 quotes. He explained everything in easy to understand terms and took the time to answer our questions. There work was first class and I definitely recommend them to anyone with a leak issue."
H. Deweerd
Edmonton Home Owner
Saved Almost 50%
"Had four quotes and Crack Stop was by far the best deal considering the materials, warranty and the knowledge of my foundation. The work was started in less than week and took one day to complete. You'd be crazy to go with anyone else in my opinion."
K. Ludwick
Edmonton Home Owner
Best Decision We Made
"After getting several quotes, we chose Crack Stop and couldn't be happier. Professional, honest, and the work quality was outstanding. Our basement has been bone dry ever since. Highly recommend to any Edmonton homeowner."
R. Morrison
Edmonton Home Owner