We classify every crack before injecting it — structural cracks get epoxy, active leaks get flexible polyurethane, and both get a written scope before we start.

Not every Irwin, SC foundation crack needs the same material or approach. A vertical settlement crack behaves differently than a stair-step block crack, and we adjust injection technique and material to match what's actually happening in the wall.
Misclassifying a crack is the most common mistake in this trade, and it's the first thing we check on every Irwin, SC job.
An actively leaking crack rarely waits for a convenient afternoon — we prioritize dispatch for Irwin, SC cracks that are currently letting water in.
A single crack repair is one of the most predictably priced jobs we do — no surprise scope creep.
Polyurethane expands to fill voids behind an actively weeping wall; epoxy is reserved for cracks that need structural bonding.

We scope every Foundation Crack Repair job in person before quoting it, since two properties with the same symptom rarely need the same fix.
Structural cracks that aren't actively leaking get epoxy injection, which bonds the concrete back together rather than just sealing the surface.
Polyurethane cures even in the presence of water, which makes it the right call for a crack that's actively letting water through.
Stair-step cracking in block foundation walls needs a different injection port pattern than a vertical crack in poured concrete, and we adjust technique accordingly.
Vertical cracks are usually settlement-related and often isolated; horizontal cracks can indicate hydrostatic pressure pushing on the wall and get flagged for further evaluation.
Selling a Irwin, SC home with a flagged foundation crack? We can inspect, repair, and provide documentation for the buyer's lender or inspector.

Photos texted ahead of time help us prep for the visit and sometimes speed up scheduling.
A technician measures crack width, checks for wall bowing, and determines whether it's structural, cosmetic, or actively leaking.
We explain why we're recommending one material over the other so the choice isn't a black box.
We check the injection ports after curing to confirm the material fully filled the crack before we consider the job done.

"Crack in our basement wall had been leaking for a year before we finally called. Injection took less than an afternoon and it's been dry since."
— Irwin Seller
"They explained why our crack was structural and not just cosmetic, which the previous contractor never bothered to check."
— Irwin Homeowner
"Appreciated the before-and-after photos for our records in case we ever need them for a future sale."
— Irwin Customer
"Fast, clean work — no mess left behind after the injection ports were patched."
— Irwin Homeowner
Crack classification is separate from water contamination — we assess whether the crack is structural or cosmetic based on width, pattern, and any wall bowing.
Catching a crack early with injection usually costs less than waiting until it's actively leaking.
We make the call on-site after inspecting the crack, not before we've seen it.
Most single-crack injections are completed in a few hours during one visit.
A properly injected crack is unlikely to reopen at the same spot, and our work comes with a written warranty covering exactly that.
Yes — we provide before-and-after photos and a repair summary that Irwin, SC buyers, sellers, and lenders commonly request.
We handle foundation crack injection throughout Irwin and the surrounding Irwin, SC service area, including the zip codes listed below.



Zip codes we serve in Irwin, SC: 29720
One call gets you a licensed specialist, a written quote, and a same-day time window.
Call +1-866-476-1348© SGP Waterproofing. All rights reserved.