Mobile Home Pier Repair and Replacement

How the pier system works

A manufactured home's weight travels a short and very concentrated path. The floor loads into the steel I beams of the chassis, the beams load into piers spaced along their length, and each pier loads into a footing pad sitting on soil. There is no continuous foundation spreading that weight out. Every pier is a point load, and each one depends on the small patch of ground directly under its pad.

Because the loads are concentrated, small problems have outsized effects. A pad that sinks half an inch drops a section of the frame half an inch. A shim that rots or compresses leaves a pier standing in place while carrying nothing, which quietly transfers its share of the load to neighboring piers that were never sized for it.

What fails, and what it looks like

Sunken or tilted pads

The most common failure in this part of Texas is not the pier itself, it is the ground under it. Clay soils lose bearing capacity when saturated. A pad set on fill that was not fully compacted, or on soil that stays wet because water drains toward the home, slowly presses down and often tips as it goes. A tilted pad puts the block column out of plumb, which is when block starts to crack.

Crushed or cracked block

Concrete block is strong in straight compression and weak when loaded off center. Once a column leans, the load concentrates on one edge and the block spalls or splits. You can often spot this from the crawlspace opening: look for stair step cracking, a chalky white residue, or blocks whose corners have broken away.

Failed shims and caps

Wood shims sit between the pier cap and the frame. In a humid crawlspace with a torn or missing vapor barrier, they absorb moisture, compress, and eventually rot. A shim gap you can slide a finger into means that pier is not doing its job. Contractors check this by tapping the shim pack: a loose or hollow response means no contact.

Piers that were never right

Some problems date back to installation. Piers spaced too far apart, columns stacked too tall without proper interlocking, pads that are undersized for the load, or piers set directly on topsoil rather than on prepared bearing all show up as premature settlement. Homes placed quickly during periods of rapid development are worth checking on this point specifically.

What repair involves

The home is supported temporarily on jacks near the pier being worked on, so the pier itself carries nothing during the repair. The old column comes out. If the pad is the problem, the contractor excavates, rebuilds a bearing surface, and sets a properly sized pad, sometimes larger than the original if the soil is soft. The column is rebuilt to the correct height, capped, and shimmed tight to the beam. Then the jack comes down and the load transfers back.

Where soil bearing is poor across a whole area of the home, a contractor may recommend larger pads to spread load, or adjustable steel piers so the home can be fine tuned later without dismantling block. They may also raise drainage, since a pier repair under standing water is a repair with a short life.

When to have piers looked at

Any time a home is being releveled, piers should be inspected as part of that work. Beyond that, it is worth a look after a very wet season, after a long drought breaks, after any severe wind event, and before you buy a used manufactured home. If you can get a flashlight into the crawlspace safely, you can do a first pass yourself by looking for leaning columns, cracked block, gaps at the top of any pier, and water lines on the block that show how high standing water has reached.

Reaching a contractor

Send the details of your home through the form and a local contractor who does manufactured home pier work in and around Cleveland will follow up. Note anything you already saw underneath, since it helps them judge how much material to bring.