Drywall Cracks in Texas Homes: Which Ones Are Cosmetic and Which Mean Foundation Trouble
Published on 9/11/2026
Most of the drywall cracks we get called about in Leander, Cedar Park and Georgetown are cosmetic. They look alarming, they show up overnight, and they cost a few hundred dollars to make disappear.
A small number are not cosmetic, and patching those is throwing money away. The crack comes back, because the crack was never the problem.
This post is about telling the two apart before you pay anyone — including us.
Why Central Texas cracks more than most places
The soil under Williamson and Travis County is largely expansive clay. It swells when it takes on water and shrinks when it dries out. The movement is not subtle: badly drained clay can move several inches vertically across a wet winter and a dry August.
Your slab rides on that soil. When one part of the slab lifts or drops relative to another, the house frame racks slightly, and drywall — which is gypsum, a rigid and brittle material — relieves that stress by cracking at its weakest points.
This is why cracks in Texas homes cluster in August and September after a long dry spell, and again after the first heavy soaking rain. Your house is not falling apart. It is breathing with the season.
That seasonal movement causes cosmetic cracking. It becomes a structural concern when movement is large, uneven, and permanent.
The cracks that are almost always cosmetic
Hairline cracks at corners of doors and windows
Openings are the weak points in any framed wall. The drywall above a door corner has less material holding it together, so seasonal movement finds it first.
A thin crack running diagonally up from a door or window corner, under about 1/8 inch wide, is the single most common crack in Texas homes. It is a finish problem, not a frame problem.
Straight seams along the ceiling or wall
A crack running dead straight for several feet, often the full length of a room, is a taped joint that has failed. Two sheets of drywall meet there, covered by paper tape and joint compound. When the tape loses its bond — usually from a poor mud bed during the original install, or from attic humidity — the seam opens.
Straight, consistent width, follows the geometry of the sheets. That is a finishing failure from the day the house was built, not the ground moving.
Cracks where the ceiling meets the wall
Common in homes with trusses. Attic trusses lift slightly in winter when the top chord is colder and drier than the bottom chord — called truss uplift. The ceiling literally rises a fraction of an inch away from the wall, then settles back in summer.
The giveaway is that the gap changes with the season and often closes on its own. Crown moulding fixed to the wall only, not the ceiling, hides it permanently.
Nail pops and screw pops
Small round bumps or flaking circles, usually in rows. This is framing lumber drying and shrinking away from the fastener. Extremely common in houses two to five years old in Leander's newer subdivisions.
Cosmetic, and worth doing properly — see our full write-up on nail pops in new construction.
The five patterns that mean call someone else first
If you see any of these, do not start by calling a drywall contractor. Call a structural engineer — not a foundation repair company, which sells foundation repair, but an independent licensed PE who sells an opinion.
1. Stair-step cracking in masonry
If the brick or stone outside has cracks that step diagonally along the mortar joints, that is the foundation talking. Interior drywall cracks that line up with exterior stair-step cracking are a matched pair of symptoms.
2. Cracks wider than about a quarter inch
A crack you can fit a nickel's edge into is not seasonal movement. Width matters more than length.
3. Cracks that are wider at one end
A crack that tapers — tight at the bottom, open at the top, or the reverse — indicates rotation. Something is tilting, not just flexing.
4. Doors and windows that stopped closing
Drywall cracking plus a door that suddenly sticks, a window that will not latch, or visible gaps at the top of a door frame is the combination that matters most. Drywall alone can be nothing. Drywall plus binding doors means the openings themselves have gone out of square.
5. Cracks that come back within a year of a proper repair
A correctly taped and floated repair should hold. If the same line reopens in the same place, the house is still moving. Patching it again is a subscription, not a fix.
A floor that is out of level is also worth measuring. A marble that rolls consistently in one direction across a room is worth a conversation, though slabs are rarely poured perfectly flat and some variation is normal.
What a proper cosmetic repair actually involves
The reason patches show later is almost never the compound. It is the two steps people skip.
- Open the crack. A crack is a moving joint. Skimming mud over the top of it puts a rigid film across a gap that is still working, and it will telegraph through by the next season. The crack gets cut out into a V, cleaned, and re-bridged.
- Re-tape it. Mesh or paper tape goes across the joint so the repair has tensile strength of its own.
- Three coats, wide. Each coat feathers wider than the last — the final pass often 12 to 16 inches across. This is what stops the shadow you see when afternoon light rakes down the wall.
- Match the texture. Orange peel and knockdown are sprayed, not brushed. Getting the nozzle, pressure and knockdown timing right is the actual skill. See matching drywall texture.
- Prime the patch, then paint corner to corner. New compound absorbs paint differently to the surrounding wall. Priming stops flashing. Painting the full wall — not just the repair — stops the visible rectangle.
Skip step 5 and you get a patch that is technically invisible in texture and completely obvious in sheen.
What it costs
Rough Central Texas ranges, for planning only — an accurate number needs eyes on it:
| Job | Typical range | |---|---| | Single hairline crack, texture matched and painted | $250 – $450 | | Several cracks in one room | $400 – $800 | | Long ceiling seam re-taped and retextured | $450 – $900 | | Nail pops, per room | $200 – $400 | | Whole-house crack repair after foundation work | $2,000 – $6,000+ |
Most contractors have a minimum service call, generally $200 to $350, because a one-hour job still costs a half day once you count travel, materials, texture matching and the return trip to paint. If a single small crack is all you have, it is often worth waiting until you have a list.
Full detail in our drywall repair cost guide.
The order of operations that saves money
If you suspect foundation movement, the sequence matters:
- Engineer's report first. A few hundred dollars for an independent opinion, and you find out whether you have a problem at all.
- Foundation work, if the report calls for it.
- Wait out a full wet-dry cycle. The house will settle into its new position.
- Drywall and paint last.
Repairing drywall before foundation work is money spent twice. We would rather tell you that than take the job.
Drainage is the cheapest foundation work there is
Most seasonal movement in Central Texas is a water management problem. Before anyone sells you piers:
- Gutters and downspouts that discharge at least five feet from the slab. Discharging at the foundation is the single most common cause of localised heave.
- Grade that falls away from the house — roughly six inches over the first ten feet.
- Consistent watering in drought. Soaker hose 12 to 18 inches out from the slab keeps the clay from shrinking away in August. Consistency matters more than volume; soaking dry clay hard after months of neglect causes its own movement.
- Large trees within about 20 feet draw serious moisture out of clay. Not a reason to remove a mature oak, but worth knowing when cracks appear on that side of the house.
Frequently asked questions
Are hairline cracks in drywall normal in a new house? Yes. Framing lumber dries and shrinks for the first two to three years, and nearly every new build in Central Texas shows some hairline cracking and nail pops in that window. Most builders cover one drywall touch-up visit in the first-year warranty — check yours before paying anyone.
How wide does a crack have to be before I worry? About a quarter inch is the common rule of thumb, but width alone is not the test. A narrow crack that is widening month over month, or that comes with sticking doors, matters more than a wider crack that has not moved in years. Pencil a date at each end and check in three months.
Should I call a foundation company or a structural engineer? An engineer. A foundation repair company assesses for free because it sells the repair. An independent licensed engineer charges a few hundred dollars and has nothing to sell you. If the report says you need piers, you will have documentation for the bid and for resale.
Will the crack come back after repair? A properly cut, taped and floated cosmetic crack in a house with normal seasonal movement should hold for years. A crack in a house that is actively moving will return, which is why diagnosis comes before repair.
Can I just use spackle from the hardware store? For a hairline in a flat-painted wall you are willing to repaint, sometimes. On a textured wall the filler will not match, and the repair will be more visible than the crack was. Most of the jobs we are called in to fix started as a tube of filler.
Does homeowners insurance cover foundation cracks? Almost never for soil movement, which is typically excluded. Sudden damage from a covered event — a plumbing leak under the slab, for example — may be covered. Read your policy's earth movement exclusion before assuming either way.
The honest summary
Nine times in ten, a drywall crack in a Central Texas home is your house doing what houses here do, and a few hundred dollars makes it go away for years.
The tenth time, the crack is a message. Wide, tapering, stair-stepped in the brick, or paired with doors that stopped closing — that one needs an engineer before it needs a contractor.
If you are not sure which you have, text a photo to 512-663-8867. Include a shot of the full wall and a close-up with something for scale. We will tell you straight which of the two it looks like, and if the answer is "call an engineer," that is what we will say.
Need this fixed?
Sanches Group handles drywall, texture, painting and the rest of the punch list across Leander, Cedar Park, Georgetown and greater Austin. Free estimates — send a photo and we will tell you straight whether it is a patch or a bigger job.