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Waterproofing & Foundation Repair – Keep Your Home Dry, Safe, and Stable
Water around your foundation can quietly damage your home—causing cracks, leaks, mold, and even structural movement. Waterproofing & Foundation Repair from Cornerstones Roofing and Foundation is designed to stop water at the source, fix existing damage, and protect your property for the long term.
Why Waterproofing & Foundation Repair Matter
When water collects around your home, it seeps into tiny openings in the foundation. Over time this leads to:Cracks in walls and floorsDamp, musty basements and mold growthBowing or shifting foundation wallsUneven floors and stuck doors/windowsLoss of structural strength and property valueProper waterproofing and timely foundation repair stop these problems before they become major, expensive issues
Our Waterproofing Services
Exterior Waterproofing
The most complete method to keep water out of your basement and foundation.
Excavation around the foundation walls
Cleaning and inspecting exposed walls
Applying waterproof membranes and protective coatings
Installing drainage board and new weeping tiles (drain pipes)
Backfilling with proper drainage material
This creates a barrier on the outside so water is stopped before it reaches your foundation.
Interior Waterproofing
Ideal when exterior excavation isn’t practical or as an added layer of protection.
Interior perimeter drainage channels along the basement floor
Sump pit and sump pump installation or upgrades
Floor and wall crack sealing from the inside
Vapor barriers and moisture control solutions
This system captures water that enters and redirects it safely away.
Crack Injection & Sealing
For specific leaks or visible cracks:
Injection of polyurethane or epoxy resins into foundation cracks
Seals the full depth of the crack to block water paths
Suitable for both poured concrete and block foundations
Our Foundation Repair Services
Structural Crack Repair
We repair vertical, diagonal, and horizontal cracks in foundation walls and floors.
Assess whether cracks are cosmetic or structural
Use proper materials and techniques to restore strength
Monitor and address the cause—soil movement, water pressure, or settling
Wall Reinforcement & Straightening
For bowing, leaning, or bulging foundation walls:
Reinforcement using steel beams or carbon fiber straps
In some cases, gradual wall straightening techniques
Designed to resist ongoing soil pressure and keep walls stable
Underpinning & Stabilization
When a foundation is settling or sinking:
Underpinning methods to support and, in some cases, lift the structure
Additional footings or piers can be used to carry the load to stable ground
Signs You May Need Waterproofing or Foundation Repair
Water on the basement floor after rain or snowmelt
Damp spots, peeling paint, or white “powdery” deposits on walls
Musty odours, mold growth, or high humidity in the basement
Cracks in foundation walls or concrete floors
Bowed, leaning, or bulging basement walls
Doors and windows that suddenly stick or go out of alignment
If you notice any of these, it’s best to have a professional inspection rather than waiting for the problem to get worse.
Our Step-by-Step Approach
Inspection & Diagnosis
We carefully examine your foundation, basement, grading, and drainage to find the true cause of water or structural issues.Clear Explanation & Options
You receive a simple, honest explanation of the problem with repair and waterproofing options tailored to your home and budget.Professional Repair & Installation
Our team uses proven methods, quality materials, and proper safety practices to complete the work.Cleanup & Final Check
We leave your property tidy and walk you through the completed work, so you know exactly what has been done.