Concrete Repair Services › Control Joint Sealing Service
Control Joint Sealing Service in Wilmington, NC
Control joint sealing fills the intentional saw cuts in a concrete slab that guide where cracks form during shrinkage. The joint itself is working correctly when you see a hairline crack at the bottom — the problem is when the open groove lets water in, softens the subbase, and starts breaking down the edges. Sealing these joints is not cosmetic; it directly extends the life of the slab underneath.
Wilmington Concrete Repair Pros provides control joint sealing service for homeowners across Wilmington, NC. Call for a free inspection and a written quote before any work begins.
When to Call
When You Need Control Joint Sealing Service
- Your Wilmington driveway control joints are open and collecting pine straw and debris
- Ant colonies are nesting in unsealed joints across your backyard concrete pad
- Water is pooling in open control joint grooves after every rain and not draining
- Edge spalling has started along the joint lines on your newly poured flatwork
How It Works
Our Process for Control Joint Sealing Service
- 1
Joint Routing
Narrow or irregular joints get routed to a consistent width and depth for proper sealant performance.
- 2
Cleaning and Drying
All dust, debris, and moisture are removed — sealant applied to a dirty joint will debond quickly.
- 3
Backer Rod Placement
Rod is installed where joint depth exceeds the recommended sealant thickness to prevent three-sided adhesion.
- 4
Sealant Application and Tooling
Sealant is applied slightly below flush and tooled to create a concave surface that sheds water.
Wilmington Context
Why this matters in Wilmington
Wilmington gets around 55 inches of rain annually, and unsealed control joints are a direct path for that water into your subbase. Once the subbase softens and erodes, the slab loses support and settling follows — sealing early is far cheaper than fixing the result.
Straight Talk
About pricing & scope
The number of linear feet and current joint condition drive the scope. Joints that were never sealed and have been open for years often need routing first, which adds prep time before any sealant goes down.
What This Fixes
Problems We See in Wilmington
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