Every slab cracks eventually. That's not a contractor dodging blame, concrete is strong in compression and weak in tension, and it shrinks as it cures. The question was never whether your patio would crack. It's whether the crack you're looking at is cosmetic or a warning.
Out here, that question comes up sooner than it does most places. West Texas is genuinely hard on concrete, and it's hard on it in three different ways at once.
Reason one: what's underneath it
Concrete is only as stable as the ground holding it up. On the South Plains, that ground is complicated.
We're working over sandy loam sitting on a hard caliche layer, mixed with clay loams that respond to moisture by changing size. When it's dry, and it's dry here a lot, those clays shrink and pull away, leaving voids. Then we get a wet stretch, they swell back up, and everything moves again.
A slab poured over soil that's cycling between shrunk and swollen is a slab that's being slowly flexed. It has no choice but to crack somewhere.
Add the things people do to their own subgrade without realizing it: a sprinkler head running against the edge of a patio, a downspout dumping in one spot, pool splash-out saturating one corner while the other three stay bone dry. Now the soil under one section is moving and the rest isn't. That's a differential movement problem, and it's the single most common cause of the serious cracks we get called out to look at.
Reason two: we freeze and thaw almost daily all winter
This one surprises people who moved here from somewhere colder.
Lubbock's average January high runs right around 55 degrees. The average January low runs around 27. Look at those two numbers together and you're looking at a slab that freezes overnight and thaws by lunch, over and over, for months, starting with our average first freeze right at the end of October.
Here's why that matters more than one hard freeze would. Concrete is porous. It takes on water. When that water freezes it expands roughly nine percent, pushing outward on the pore walls from the inside. Thaw it, let it soak in again, refreeze it tomorrow.
Northern states get deep, sustained freezes, the slab freezes in December and mostly stays frozen. We get the version that's actually worse for the material: dozens upon dozens of cycles a season. That's what produces spalling, the flaking, pitting, exposed-aggregate look that turns a smooth deck into sandpaper. It's the most common concrete complaint we see in Lubbock, and it's almost entirely a freeze-thaw story.
Anywhere that stays wet going into a freeze gets it worst. Pool decks. The low spot in the patio that never drains. Shaded north sides that don't dry out.
Reason three: sun and grit
Lubbock gets roughly 3,200 hours of sunshine a year. Your slab expands in that heat and contracts at night, every single day, which works cracks wider over time. In July, a bare concrete deck can get hot enough that nobody's walking it barefoot, which is its own problem if it's around a pool.
And then there's the wind. Blowing dust and sand on the High Plains is a mild abrasive, working on the surface paste year after year. It's slow, but it's relentless, and it's part of why a fifteen-year-old deck here looks older than a fifteen-year-old deck in Dallas.
How to read your cracks
Get out there with a tape measure and look honestly. Five things to sort out:
Hairline and shrinkage cracks. Thin, often showing up in the first year, wandering with no pattern. This is the slab drying out. Cosmetic. Not a structural problem.
Cracks along control joints. Those tooled or saw-cut lines are there specifically to tell the slab where to crack. If it cracked in the joint, the joint did its job. That's a win.
Crazing. A fine network of shallow surface cracks, like a dry lake bed. A finishing or curing issue, purely cosmetic, but it does make the surface look rough and it holds dirt.
Spalling and popouts. Flaking, pitting, exposed aggregate. Freeze-thaw, as covered above. Not structural on day one, but it's a surface that now holds water more easily, which accelerates the next round.
Settlement and displacement cracks. This is the one to take seriously. The tells: the crack is wider than a quarter inch, one side sits higher than the other, it's grown measurably over a year, it runs the full width of the slab, or you can feel the lip with your foot. That's the subgrade moving, not the concrete curing.
Quick field test: mark each end of a crack with a pencil, write the date, and measure the width. Check it in three months and again in six. A crack that hasn't moved is a crack you can work with. A crack that's still opening needs the cause fixed before anything gets put on top of it.
Repair, resurface, or replace?
Fix the water first, always. Redirect the sprinkler head, extend the downspout, correct the grade so runoff moves away from the slab and away from the house. Skip this and whatever you do next is on a clock.
Repair makes sense for isolated cracks in an otherwise sound slab that you can live with cosmetically.
Resurfacing is the right answer more often than people expect, when the slab is structurally sound and stable but the surface has failed. Spalled, crazed, stained, slick when wet, too hot to walk on. There's nothing wrong with the structure; the top of it is just worn out and ugly. Tearing out a sound slab to pour an identical one that will spall again in the same climate is an expensive way to reset the clock.
This is where a seamless poured rubber surface earns its keep in West Texas specifically: it goes down over the existing concrete, it flexes instead of spalling, it's not slick when it's wet, and it doesn't cook your feet the way bare concrete does in July. Our rubber surfacing page has the full spec comparison against pavers, tiles and concrete if you want the details.
Replacement is the honest answer when the slab has broken into sections that move independently of each other, when there's real vertical displacement, when the subgrade has failed, or when the slab is pitched to drain toward your foundation.
And here's the part we'd rather tell you up front than after we've cashed a check: resurfacing a slab that's still moving will telegraph. Put any overlay across an active crack and that crack will eventually show through, because the problem was never the surface. If a contractor offers to coat over displacement without addressing what's causing it, get a second opinion.
Why fall is the right time to sort this out
Two reasons.
First, anything you're going to fix, you want fixed before winter, not after. Every freeze-thaw cycle between now and March works on whatever damage is already there, and water sitting in an open crack through a Lubbock winter is the fastest way to turn a small problem into a big one.
Second, spring is when every deck and patio contractor in this county is booked solid. Decisions made in October get installed on your schedule. Decisions made in April get installed on somebody else's.
Talk to us before you tear anything out
We've looked at a lot of Lubbock concrete, and a good share of the slabs people assume are done have plenty of life left, they just need the surface addressed and the water redirected. We'll tell you which one you've got.
When you call TMB, you talk to the owner, not a call center. We'll come look at it, tell you honestly whether it's a repair, a resurface or a replacement, and we'll tell you if it's the one we can't help with.
Call (806) 696-2168 or request an estimate. We serve Lubbock, Wolfforth, Shallowater, Slaton, Idalou, New Deal, the Frenship area and Lubbock County.
FAQ
Are hairline cracks in concrete normal? Yes. Thin shrinkage cracks appear as concrete cures and dries, usually in the first year, and they're cosmetic. The cracks worth worrying about are wider than a quarter inch, show one side higher than the other, or keep growing.
Why does concrete flake and pit in Lubbock? Freeze-thaw damage. Lubbock's average January high is around 55 degrees and the average low around 27 degrees, so a slab freezes overnight and thaws by afternoon nearly every winter day. Water inside the concrete expands each time it freezes, breaking the surface apart from within.
Can you resurface cracked concrete? Often, yes, if the slab is structurally sound and the cracks are stable. If the slab is still moving or has vertical displacement, an overlay will eventually telegraph the crack through, and the underlying cause needs to be addressed first.
Should I repair or replace my patio? Replace when the slab has broken into independently moving sections, there's real displacement, the subgrade has failed, or it drains toward your house. Resurface when the structure is sound and only the surface has failed. Have someone measure it before you decide.
What causes concrete to crack in West Texas specifically? Three things stacked together: clay soils that shrink and swell with moisture, dozens of freeze-thaw cycles each winter, and intense year-round sun driving daily expansion and contraction.
How do I know if a crack is still moving? Mark both ends with a pencil, note the date, measure the width, and re-check in three and six months. Stable cracks can be worked with. Growing ones mean the subgrade needs attention first.
Does fixing drainage really matter that much? It's the most important step. Most serious slab cracking here traces back to uneven soil moisture, a sprinkler, a downspout or pool splash-out saturating one area while the rest stays dry. Fix that, or you'll be doing the work twice.