Foundation Crack Repair · Roanoke, VA
Foundation Crack Repair in Roanoke
Some foundation cracks are cosmetic. Others mean the wall is moving. Knowing the difference saves money and keeps small problems from becoming big ones.
- Free on-site inspection
- Local Roanoke Valley pros
- Fast callbacks, often same day
Foundation crack repair seals and, when needed, structurally bonds cracks in basement and foundation walls. Poured concrete cracks are usually injected with epoxy or polyurethane. Cracks in block walls or cracks caused by movement need the movement fixed first. We connect Roanoke homeowners with local pros for an inspection.
Types of foundation cracks
Vertical hairline cracks in poured concrete are the most common and usually come from shrinkage. Diagonal cracks from corners or above windows can signal settling. Horizontal cracks in block walls usually mean pressure from outside soil. Stair-step cracks along the mortar joints of block walls can come from settling or bowing. Width, direction and whether the crack is changing all matter.
How cracks are repaired
For poured walls, the pro cleans the crack, installs small injection ports along it, seals the surface, then pumps in epoxy or polyurethane from the bottom up. Epoxy restores strength; polyurethane stays flexible and is great for stopping leaks. Block wall cracks are a different job. If the wall is moving, it needs bracing or anchoring, and the cracks are tuckpointed or sealed afterward.
What to expect
A typical crack injection takes a few hours. The ports are removed and the surface ground smooth once the material cures. If the basement is finished, the contractor may need access through a section of drywall. Ask whether exterior water management is also recommended to keep the crack from reopening.
Questions to ask
Ask whether the crack is structural or cosmetic and why. Ask which material they'll use. Ask about the warranty against leaks. If it's a block wall, ask whether the wall is moving and how they measured that.
Cracks that need a pro
- Wider than about 1/4 inch
- Horizontal in a block wall
- Stair-step and growing
- One side shifted past the other
- Leaking during rain
Crack repair cost
Most crack repairs are priced per crack.
| Job | Typical range |
|---|---|
| Polyurethane leak injection | $400 to $800 per crack |
| Epoxy structural injection | $500 to $1,000 per crack |
| Block wall crack sealing (no movement) | $300 to $900 |
General ranges. Your provider will quote after seeing the crack.
Frequently asked questions
Can I seal a foundation crack myself?
DIY kits can work on small leaking cracks in poured concrete. They won't fix structural movement, and bad prep leads to leaks. If unsure, get it looked at.
How do I know if a crack is getting bigger?
Mark the ends of the crack with a pencil and the date, and measure the width. Check every month or two. Growth means movement.
Do vertical cracks mean my foundation is failing?
Usually not. Thin vertical cracks in poured walls are common. They matter if they leak, widen or show offset.
Epoxy or polyurethane?
Epoxy for structural bonding of a stable crack, polyurethane for flexible leak sealing. The contractor picks based on the crack.
Will a sealed crack come back?
If the wall is stable and the crack was injected correctly, it shouldn't. If the wall is still moving, it can reopen, which is why the cause matters.
Other services
Foundation Repair
Diagnosis and repair of settling, sinking and cracked foundations.
Learn moreBowing Basement Wall Repair
Wall anchors, steel or carbon-fiber bracing for leaning and bowing walls.
Learn morePier Installation & Underpinning
Push piers and helical piers to stabilize and lift settling foundations.
Learn moreCrawl Space Repair & Encapsulation
Sagging floor supports, moisture control, vapor barriers and encapsulation.
Learn moreBasement Waterproofing
Interior drains, sump pumps and exterior grading for wet basements.
Learn moreAreas we serve
We connect homeowners across the Roanoke Valley with local pros.
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