Floor sloping or uneven: the frame is low on one side

A floor that leans, a hallway you feel yourself walking downhill in, a marble that rolls the same way in every room: the frame is low on one side because the piers on that side have dropped. The fix is a relevel at $450 to $800 for a singlewide or $750 to $1,400 for a doublewide, and the survey that measures the slope pier by pier is free.

What is actually happening

A manufactured home’s floor is built on a steel chassis, two I-beams the length of the home, and the chassis rests on a row of block piers under each beam. When the piers under one beam settle more than the piers under the other, the whole floor tilts across the home. When the piers at one end settle more than the other, it tilts along it. When a few piers in the middle drop, it dips.

The floor is telling you which. A consistent lean in every room is a whole-side drop. A dip in one area is a few piers. A slope that changes direction from room to room on a doublewide usually means the two halves are sitting at different heights, which is the marriage-line problem.

Check this first

The marble test, in three rooms. Same direction every time means the frame is low on that side. One room going its own way means a local pier or a soft subfloor.

Look at the doors. A racked frame sticks doors, so sticking doors on the low side confirm it.

Look outside. Walk the low side of the home. Is the skirting jammed into the ground or bowed out on that side? Is there a downspout dumping there, a low spot in the lot, a shaded side that stays damp? That is usually the cause, and it is usually fixable.

Look under, if you can. A pier you can rattle by hand is carrying nothing, and the ones next to it are carrying its load.

Then run the settling self-check, which scores twelve signs including this one.

Cause, fix, and cost

What you see	Likely cause	Fix	Cost
Even lean, whole side	Piers under one beam settled	Relevel, reshim that row	$450 to $800 single, $750 to $1,400 double
Lean plus a dropped corner	Piers at one end sunk into wet ground	Relevel with pier rebuilds on bigger pads	Relevel plus $150 to $400 per pier
Dip in one area	Two or three piers lost	Reset or rebuild those piers	$75 to $150 or $150 to $400 each
Slope changes direction, doublewide	Halves at different heights	Relevel with the center row matched	Doublewide range
Lean returns within a year	Water problem under the home not fixed	Drainage, gutters, pad grading	Varies, often small

Why it happens around Wildwood

Sumter County is sand over limestone, and the soil survey maps the ground under Wildwood and Oxford in Candler, Arredondo, Kendrick, and Tavares sands: loose, well-drained, and poor at holding a point load. On the lower ground the survey maps Sparr and Adamsville with a seasonal water table at 23 to 33 inches through the summer, and Sumterville soils with clay in them that swells and shrinks with the season.

Loose sand under a pier footing rearranges itself every time water moves through it. The Lisbon climate station normals put 27.79 of the year’s 50.03 inches of rain into June through September, most of it in afternoon storms, and the side of the home that gets the most of that water through its sand drops the most. On the wet units the pad yields into saturated ground instead, faster and less evenly. On the clay it moves up and down with the season. All three show up as a slope, and the survey reads all three the same way, pier by pier.

Three to five years is the honest maintenance interval here. What lengthens it is what happens to water around the home: gutters that carry roof water past the piers, a pad graded so the low side does not stay wet, vents that let the underside dry.

What the work involves

The crew shoots every pier with a water level off a datum pier and writes the reading on a frame map, so the slope becomes numbers: this pier a quarter inch low, that one an inch and a half. Then the low side comes up on hydraulic jacks carried by cribbing, in small increments across several stations so the frame returns to plane as a unit rather than being cranked at one point. Each low pier gets new hardwood shims driven tight in pairs, inside the one-inch federal limit; any pier that has dropped further than shims can honestly fill gets rebuilt at the right height on a pad sized for the ground. The whole frame is re-shot afterward, and the anchor straps, which went slack as the home dropped, are re-tensioned.

When to call

When you can feel it, when the marble rolls, or when the doors on the low side have started to stick. A slope that has been there for years is not an emergency, but every wet season it runs unwatched adds piers to the rebuild list. Tell us which side, whether the doors stick, and roughly when the home was last leveled. The level check is free, and the cost calculator puts a range on it now from the published prices.

We cover Wildwood, Oxford, Lady Lake, Bushnell, Coleman, Webster, and Leesburg.

Frequently Asked Questions

How much slope is too much?

If you can feel it walking, or a marble travels on its own, the piers have moved enough to be racking the frame, and that is enough. A quarter inch over ten feet is invisible to walk on and obvious to a marble. The number that matters is the pier-by-pier reading from the survey, which is free.

Is a sloping floor dangerous?

Not immediately. The home is not going to fall over. What it is doing is grinding the caps and shims on the low piers, stressing the marriage-line seal on a doublewide, and pulling the anchor straps slack. Every wet season it runs unwatched costs more to correct, which is the argument for doing it this year rather than in three.

What does it cost to fix?

A relevel is $450 to $800 for a singlewide and $750 to $1,400 for a doublewide, which includes new shims on every low pier. Piers that have dropped past the federal shim limit are rebuilt at $150 to $400 each. The survey counts them before anything is quoted.

Why is it always the same side?

Because that is the wet side. The side of the home under a roof valley, a downspout, the shade that never dries, or the low corner of the lot gets more water through the sand under its piers, and sand compacts a little every time water moves through it. The crew will point at the downspout while they are under there.