Flat ground, heavy clay, long dry spells, and tropical rain. Houston-area foundations move with the soil under them. Here is what to watch for and how to request an inspection.
Most of the Houston area sits on clay-rich coastal-plain soil that swells when wet and shrinks when dry. The land is nearly flat, so water drains slowly and soil moisture can swing hard between a wet spring, a hot dry summer, and a tropical storm. A slab resting on that soil rises and falls a little with each cycle, and the movement is rarely even across the whole house.
Other local factors add to it: thirsty trees planted close to the slab, under-slab plumbing leaks in older homes, and long-term ground subsidence in parts of the region.
Most Houston homes built in recent decades are slab-on-grade, many with post-tensioned slabs. Older neighborhoods closer to the city center still have plenty of pier and beam houses with a crawlspace. The two foundation types show different symptoms and need different repairs. See slab vs. pier and beam.
Elevation readings and a written explanation of what the house is doing.
Pier-based repair for slab-on-grade homes, including post-tension slabs.
Shimming, pier and beam replacement, and crawlspace moisture fixes.
Lifting low areas back toward level where the structure allows it.
Grading, gutters, and drainage that keep soil moisture more even.
What changes the scope of a repair. Every quote follows an inspection.
Inner-loop pier and beam homes to newer slab neighborhoods across the city.
Older homes on expansive clay east of Houston near the Ship Channel.
Fast-growing Brazoria County suburb on Gulf Coast clay.
Master-planned Fort Bend County neighborhoods on post-tension slabs.
Flat former prairie west of Houston with newer slab homes and drainage concerns.
Also serving: Friendswood · Alvin · Manvel · Missouri City · League City · Iowa Colony · Rosharon, plus Cypress, Spring, The Woodlands, Humble, Kingwood, Baytown, Richmond, Rosenberg, Fulshear, and Tomball.
Expansive clay soil, flat land that drains slowly, and big swings between drought and heavy rain all move the soil under a slab. The movement is usually uneven, which is what causes cracks and sticking doors.
Standing water is not usually what damages a slab directly. The bigger issue is soil that stays saturated and then dries out, which can lead to uneven movement. If you notice new cracks or sticking doors after a flood, request an inspection.
Keeping soil moisture more even around the house can help in long dry spells. A soaker hose a short distance from the slab is a common approach. Read how to water your foundation.
No. Some cracks are cosmetic shrinkage. Cracks that are widening, stair-stepping, or paired with sticking doors or sloping floors are worth an inspection. See cosmetic vs. structural cracks.
Use the inspection request form or call (346) 679-7687.
Request an inspection from Foundation First TX and get clear next steps.
