Concrete Repair Services › Expansion Joint Repair
Expansion Joint Repair in Ann Arbor, MI
Expansion joints are the full-depth gaps that let concrete slabs grow and shrink against buildings, curbs, and other fixed structures without forcing a crack. When the filler dries out, gets compressed flat, or falls apart, the joint stops doing its job and the concrete has nowhere to go. We remove the old material down to the bottom of the gap, install proper backer rod, and apply a sealant rated for the movement range that joint will actually see. Getting the sealant depth-to-width ratio right is what separates a repair that lasts from one that pops out in two winters.
Ann Arbor Concrete Repair Pros provides expansion joint repair for homeowners across Ann Arbor, MI. Call for a free inspection and a written quote before any work begins.
When to Call
When You Need Expansion Joint Repair
- The expansion joint between your driveway apron and garage foundation is completely hollow
- Patio slab is pushing against the house foundation because the joint compressed flat years ago
- Concrete steps have separated from the porch slab and the gap is now open to groundwater
- Pool deck expansion joint has cracked through and water is migrating under the deck surface
How It Works
Our Process for Expansion Joint Repair
- 1
Gap Assessment
We measure joint width and depth at multiple points to confirm the gap is still functional and the concrete edges are intact.
- 2
Full Removal
Old foam, rubber, or dried sealant gets pulled out completely. Partial removal is the main reason these repairs fail early.
- 3
Backer Rod Sizing
We select backer rod diameter larger than the gap width so it seats firmly and gives the sealant the correct backing depth.
- 4
Sealant Application
Sealant is tooled to a slight concave profile so it can stretch during expansion without pulling away from joint walls.
Ann Arbor Context
Why this matters in Ann Arbor
In Ann Arbor, concrete placed against brick foundations common in older Kerrytown and Burns Park homes moves constantly with seasonal temperature swings. Those brick-to-concrete transitions fail more often and sooner than slab-to-slab joints.
Straight Talk
About pricing & scope
Price is driven by gap depth, total linear footage, and whether the concrete edges need grinding or patching before sealant will adhere. Joints adjacent to structures that have shifted require extra time to evaluate.
What This Fixes
Problems We See in Ann Arbor
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