Cracks in a Dry Year

Tuesday, September 22nd, 2026 — In 2011 Texas recorded its driest year in the instrumental record. The drought killed trees, emptied stock tanks, and shrank the clay soils that a large share of the state's houses sit on. Foundation repair companies in Dallas-Fort Worth and Houston stayed booked for months. Claims followed, and a lot of them arrived with the same two photographs: a stair-step crack in the brick, and a door that no longer latched. The photographs did not say what moved the soil. The policy's answer depended entirely on that.

Dry years have kept arriving. So have wet years that swell the same clay back. Adjusters in any region with expansive soil, the Blackland Prairie, the Gulf Coast, parts of the Front Range, the Central Valley, see a wave of foundation calls a season or two after the weather swings hard. The calls sound alike. The causes do not, and treating them as one kind of claim is how a covered plumbing loss gets denied, or how an excluded shrinkage claim gets paid because the insured hired a plumber who found a damp spot.

Why the soil moves

Expansive clay takes on water and gains volume. It gives water up and loses volume. A slab or a pier foundation built on that clay moves with it. The movement is slow, it is worse at the edges of the slab where the soil dries and wets fastest, and it shows up in the building as cracks at openings, brick separations at the mortar, floors out of level, and doors that rub. Engineers measure it. Homeowners feel it when a bedroom door starts sticking in August.

A plumbing leak under the slab does something that looks identical from the living room and is physically different. Water leaves the pipe, wets a pocket of soil, and that pocket swells or, once the water stops, shrinks as it dries back out. The slab bends over the soft spot. The crack pattern can be the same stair-step in the brick. The cause is a sudden discharge from a plumbing system, which is a named covered peril on a standard homeowners form, sitting right next to an earth-movement exclusion that was written to keep drought, settlement, and soil expansion out of the policy.

Those two sentences are the whole claim. Everything else is how you tell them apart, and what the form does with each answer.

Where the form draws the line

The earth-movement exclusion on the standard homeowners form lists earthquake, landslide, mine subsidence, mudflow, and the sinking, rising, shifting, expanding, and contracting of earth. Drought shrinkage is that last pair of words. Seasonal heave is too. Neither is sudden in the sense the policy uses elsewhere, and neither involves a break in the plumbing system. A claim that is only "the clay dried out and the slab moved" is an excluded claim, and the denial should say so by quoting the exclusion and describing the engineer's cause, not by calling it wear and tear or maintenance. Those are different exclusions. Use the one that fits.

A sudden and accidental discharge from a plumbing system is covered. The water damage that follows is covered. The cost to tear out and replace the part of the building needed to reach the break is covered on most current forms. The argument starts at the foundation repair itself. If the slab cracked because the leaked water swelled or softened the soil, carriers and their engineers often treat the slab movement as earth movement set in motion by the leak, and the earth-movement exclusion plus the anti-concurrent causation clause is the basis for paying the pipe and the access and the water-damaged finishes while declining the foundation piers. Other forms, and some states' case law, treat the foundation damage as ensuing loss from a covered discharge and pay it. The form edition and the state decide. Read both before you tell the insured that foundation work is included or that it is not. Promising either one from habit is the error.

A third pattern sits between them and fools both sides. The house has been cracking for years from ordinary soil movement. Last month a supply line under the slab finally broke, either because the movement stressed it or because it corroded. There is a real leak, and there is real, older foundation distress. The leak is covered. The old movement is not. Paying to relevel the whole house because a pipe broke is an upgrade. Denying the access and the broken pipe because the house also has old cracks is an underpayment. The scope has to be split, and the split has to be written down in sentences a reviewer can follow.

Four files that look the same from the curb

Drought only. The summer was extreme, the lawn pulled away from the foundation, the cracks are wider at the top, and they are worse on the south and west elevations. No one has noticed a drop in water pressure. The water bill is normal. A floor-level survey shows the edges down relative to the center, which is the usual shape of perimeter drying. A plumber's test finds no leak. This is earth movement. Explain it, deny it under the exclusion, and do not let a foundation company's proposal convert it into a plumbing claim by describing the watering-of-the-foundation plan as a repair of covered damage. Maintenance the insured can do to slow further movement is not a covered cost.

A leak, then movement. The water bill jumped, or a hot-water line has been losing pressure, and there is a warm spot on the floor. Leak detection, acoustic or infrared or both, locates an active leak. The floor survey shows a localized high spot or a dish right above the wet soil, not a uniform edge drop. When the plumber opens the slab, the bed is wet in a limited area and the pipe has a split, a failed coupling, or a hole. Scope the pipe, the access, the finish repairs, and the drying. Ask for an engineer on the slab before you add piers. If the engineer ties the elevation change to the wetted zone and the form in that state pays ensuing structural damage, include it. If the engineer says the slab movement matches long-term edge drying and the leak is incidental, pay the leak and say why the piers are not part of this occurrence.

Movement, then a leak. The cracks are old. Paint from two remodels sits in them. The door has been planed more than once. The leak, when you find it, is at a fitting that was pulled apart as the slab bent, or it is a corrosion failure that has nothing to do with the cracks. Ask the engineer which came first, and ask for the reason, not a vote. Prior listings, old inspection reports, and the seller's disclosure from the last sale are often the best evidence in the file. A crack that was photographed in a listing three years ago was not caused by last month's leak.

The tree and the gutter. A mature tree against the foundation pulls water out of the clay in a dry year and produces a local drop that looks like a plumbing dish. A gutter that has discharged against the slab for a decade keeps one corner wet and produces heave. Neither is a sudden discharge from a plumbing system. The tree is a maintenance and earth-movement fact. The gutter may be a repeated seepage or a surface-water fact, both commonly excluded, and it is worth describing accurately because a broken gutter joint that suddenly dumps water can occasionally be a discharge from a plumbing or household appliance system if the form's definition reaches it. Most of the time it does not. Say which system failed, in the policy's words.

The investigation, in an order that saves money

Foundation claims get expensive when the adjuster orders a $4,000 engineering report before anyone has checked for a leak, or pays a plumber to jackhammer a slab that a water bill and a pressure test would have cleared. A sequence that works:

1. Interview and history. When did the doors start sticking. Has the house been repaired before, and by whom. Any prior claim. Any recent plumbing work. How is the yard watered. Is there a tree within a few feet of the cracked wall.

2. The water bill, a year of it, and a static pressure test. A bill that doubled is not proof of a slab leak, and a flat bill is strong evidence against an active one.

3. A walk of the finishes. Photograph cracks with a ruler, inside and out, and note whether they have paint in them, caulk in them, or sharp clean edges. Photograph the gap between soil and slab.

4. Leak detection before demolition. The insured's plumber can do it, or a firm you hire. Get the report, not a verbal "we found something."

5. An engineer when there is either a confirmed leak near structural damage, or a demand for foundation repair on a file you expect to deny. The engineer should be asked a narrow question. What moved, what most likely caused it, and what evidence would change that opinion. An open-ended "please evaluate the foundation" comes back as a repair proposal.

6. The form, read against those facts, with a coverage referral if the ensuing-loss question is close. Close questions belong upstream of the denial letter.

Write the cause in one paragraph that does not use the word "settlement" as a substitute for a mechanism. Settlement means too many things. "Perimeter clay shrinkage following the 2023 drought, no plumbing leak found, crack pattern and level survey consistent with edge drying" is a cause. "Settlement" is a shrug.

Talking to the homeowner and the repair company

The homeowner wants the doors to close and is afraid the house is unsafe. Most of these houses are not unsafe. They are out of level, and out of level is miserable without being dangerous. Say so if the engineer said so. Do not announce that the house is unsound because a door sticks, and do not announce that it is fine if you have not had anyone qualified look at a large displacement. Refer the safety question. Answer the coverage question yourself.

Foundation repair companies do a lot of competent work and they are also paid to install piers. Their proposal will describe the damage in language chosen to fit a claim. Read it for facts, the elevations, the crack map, the photos, and set aside the paragraph that says the damage is "consistent with a plumbing leak" unless it encloses the test that found one. Ask them for the leak-detection report. If they did not do one, you are not required to treat the proposal as evidence of a leak.

Where the loss is excluded, the denial letter has to be specific enough that the insured can hand it to the next person they hire. Quote the exclusion. State the facts you relied on, including the tests that came back negative. Tell them they can send you a leak-detection report if one has not been done, and that you will review it. A denial that reads as "foundation claims are never covered" is both inaccurate and the kind of letter that generates a complaint with merit. A denial that reads as "we tested for a plumbing leak, did not find one, and the engineer's cause is drought shrinkage of the supporting soil, which the policy excludes" is the claim, correctly handled.

Where the leak is covered and the piers are not, pay the covered part on the normal timeline and put the pier decision in writing beside it. Holding the whole file until someone blinks on the foundation is how a $2,800 pipe repair sits unpaid for three months. The insured can pursue the pier dispute without living with an open supply line.

The next dry year

Nothing in the building code is going to stop clay from shrinking the next time a summer breaks records. Newer slabs are stiffer, some are on piers already, and watering guidance published by foundation engineers, including the Foundation Performance Association in Houston, reduces the movement. None of that puts drought shrinkage back into the policy. What it changes for the adjuster is volume. After the next bad summer in an expansive-soil city, these files will show up in a cluster, and the ones that get handled well will be the ones where somebody checked the water bill before they argued about the brick.