Sinking Foundation Repair Burnet, TX.

A sinking foundation in Burnet rarely announces itself with a dramatic collapse. It shows up as one low corner, a door that suddenly drags against its threshold, or a hairline that creeps a little wider each season. The reason traces straight to what's under the slab: in much of Burnet there isn't deep, uniform clay to blame. There are only a few inches to a few feet of decomposed granite or residual soil sitting directly on bedrock whose surface rises and falls unpredictably.

That thin, irregular bearing layer is exactly why two foundation points a few feet apart can settle at completely different rates. One side rests on dense rock; the other bridges a soft seam of weathered granite. When that mismatch reaches even a quarter inch, brick mortar cracks, interior doors bind, and gaps open where the wall meets the ceiling. Fixing it well in Burnet means understanding the rock, not just the symptom on the surface.

Why shallow bedrock fools so many foundations here

It's tempting to assume that bedrock close to the surface makes for a stable foundation. In Burnet, the opposite is often true. Granite weathers into a fine, sandy, low-cohesion material called grus that compresses steadily under the sustained weight of a house, so a slab can keep settling even though it's resting only inches above solid-looking rock.

Limestone brings its own trap. The Edwards shelves around Burnet are riddled with solution cavities, fracture planes, and pinnacled surfaces, which means an original construction crew that bored to apparent refusal may have landed on a thin ledge overhanging a void rather than on continuous rock. Rainwater works into those fractures, slowly dissolves the carbonate, and lets the bearing point give way years after the home was built.

Because the rock surface is so uneven, the only reliable way to tell genuine bearing from a false refusal is to measure the slab itself. A contour map of elevation across the perimeter and interior shows where the structure has actually deflected, and that map, not a guess from where cracks happen to appear, is what a pier plan should be built on.

How a Burnet repair actually goes

What to watch for before you call

A few notes give an engineer a real head start, and a few habits keep the problem from getting worse:

• Photograph each crack with a ruler in frame, and note which way a sticky door drifts over a couple of weeks, direction of movement is useful baseline data.
• Grade soil and mulch beds to fall at least six inches across the first ten feet from the house; thin soils over rock can funnel runoff straight to the slab edge.
• Keep drip and soaker lines back from the foundation, water within eighteen inches feeds the fractures that connect to your bearing layer.
• Treat interior grid cracking as its own signal, not just perimeter settlement. It often means the slab has flexed and needs interior pier points.
• Ask for the elevation survey and engineer-backed plan in writing before any work starts; on Burnet's variable rock, deciding pier depths on the fly leads to sections that settle again.

Burnet sinking foundation questions