Wall Crack Repair in Montgomery, AL

Cracked walls are the most common visible sign of foundation distress in Montgomery,

Alabama homes. Some cracks are purely cosmetic, caused by normal concrete shrinkage or

temperature changes. Others indicate serious structural movement that requires immediate

attention. Wall crack repair in Montgomery requires an accurate diagnosis so you don’t waste

money fixing the wrong problem.

Diagnosing the Cause of Wall Cracks

Montgomery Foundation Repair Co first determines whether a crack is structural or

non‑structural. Non‑structural cracks are usually hairline (less than 1/8 inch wide), vertical, and

have no displacement (one side is not higher than the other). They can be filled with simple

sealant. Structural cracks are wider than 1/4 inch, diagonal or horizontal, and often have one

edge higher than the opposite edge. You may also see multiple parallel cracks, cracking

around door or window frames, or cracks that continue through brick veneer. Structural cracks

require foundation underpinning before any patching will hold.

Epoxy Injection for Load‑Bearing Walls

When a foundation wall or basement wall has a structural crack but the wall is not actively

moving, low‑pressure epoxy injection restores full strength. Montgomery Foundation Repair Co

cleans the crack, installs injection ports every few inches, and seals the face with epoxy paste.

Then we inject a two‑part epoxy that penetrates the full depth of the crack, bonding the two

sides together. Cured epoxy has a compressive strength greater than the original concrete.

This method works for cracks up to 1 inch wide and is approved by most structural engineers.

Polyurethane Foam for Waterproofing Non‑Structural Cracks

If a crack is non‑structural but leaks water into your basement or crawl space, polyurethane

foam injection is the best choice. Unlike epoxy, polyurethane expands as it cures, filling

irregular voids and creating a flexible seal that moves with minor temperature changes.

Montgomery Foundation Repair Co uses hydrophilic polyurethane that reacts with water to

form a rubbery plug. The foam remains flexible, so seasonal movement from Montgomery’s

clay soil won’t break the seal. This repair typically carries a 10‑year warranty against water

intrusion.

When Crack Repair Requires Foundation Underpinning First

Attempting to patch a crack while your foundation is still settling is futile. The crack will simply

reopen, often wider than before. Montgomery Foundation Repair Co always performs a

settlement inspection before any crack repair. If we find evidence of active settlement—such as

sloping floors, separated brick mortar, or crack monitors showing movement—we recommend

push piers or helical piers first. After the foundation is stabilized, we return to inject the cracks.

This two‑step approach costs more upfront but saves you from repeated crack repairs every

few years.

Frequently Asked Questions