Katy TX sits on expansive clay soil that swells in rain and shrinks in drought, causing concrete slabs to crack, heave, and settle. Add freeze-thaw cycles and summer heat, and virtually every slab in the Houston area develops cracks over time. The question is how to repair them correctly before coating.
What Is A Concrete Crack?
Concrete cracks fall into two categories: cosmetic (hairline, shrinkage, and surface cracks that don't affect structural integrity) and structural (wider cracks, step cracks, or cracks caused by settlement or heaving that indicate movement). Both types must be addressed before epoxy — but the repair method differs. Cosmetic cracks get filled with semi-rigid polyurea; structural cracks may require grinding, underfill, or engineer evaluation.
Why It Matters Before Epoxy
Epoxy bridged over an unfilled crack will eventually reflect that crack through to the surface — especially in a high-traffic garage. Worse, an unfilled crack is an open channel for moisture and radon. Proper crack repair before coating is the difference between a floor that lasts 10+ years and one that fails in 18 months.
Our Process
- Crack assessment — map all cracks, classify cosmetic vs. structural
- Routing (if needed) — widen hairline cracks to ensure proper filler penetration
- Polyurea injection — semi-rigid filler with 350% elongation to flex with the slab
- Feather grinding — grind flush after cure for a flat surface profile
- Full epoxy system — primer, body coat, broadcast, topcoat applied over repaired slab
Our Floor Problem Services
We classify and map every crack before recommending repairs.
Semi-rigid filler that bonds to concrete and flexes with the slab.
For settlement and heave cracks requiring more than filler.
Full coating system applied over a properly prepped surface.
Get a Free Assessment
Not sure what you're dealing with? We'll evaluate your floor and give you a written quote. No obligation.
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