Originally published on doityourself.
You wake up, go to open a window for some fresh air, and it won't budge. The bedroom door won't stay shut; it drifts back open on its own. There's a hairline crack creeping up the wall that wasn't there last spring. The floor creaks in a spot it never used to.
Your mobile home has gone unlevel, and it's telling you in every way it can.
The good news is that releveling a mobile home is a well-understood job. Some homeowners can handle a minor adjustment themselves with the right tools and a healthy respect for what they're working under. Others will be better off calling a professional - and part of doing this right is knowing which situation you're in.
What "Releveling" Actually Means
A mobile home doesn't sit on a poured slab the way a site-built house does. It rests on a series of piers (stacks of blocks, and sometimes adjustable steel or concrete stands) positioned under the steel I-beams that run the length of the home. Those piers carry the load down to the ground, and thin wedges called shims fill the small gaps to keep everything tight and level.
Over time, the ground underneath shifts, the piers settle unevenly, and the home starts to tilt. Releveling simply means getting the home sitting flat and evenly supported on those piers again.
Why Mobile Homes Go Unlevel
Homes settle for a handful of common reasons. Knowing yours helps you judge whether it's a quick fix or a bigger issue:
- Soil movement and erosion: Rain, drainage problems, and the natural freeze-thaw cycle move the earth under your piers. This is the most common culprit.
- Excess moisture: Water pooling under the home softens the soil and lets piers sink.
- Improper blocking or setup: If the home wasn't blocked correctly when it was set, it'll drift out of level faster.
- Loose or slipped wedges: The shims that fill the gaps can work loose over time, dropping a section of the home.
- A sudden extreme storm or event: High winds or saturating rain might shift a home in a single weekend.
- Time, plainly: Even a well-set home needs periodic attention.
Most manufacturers recommend checking your home's level every three to five years. If your home is older or sits on soft/sloping ground, lean toward the shorter end.
Signs Your Mobile Home Is Unlevel
You rarely notice the tilt itself. Instead, you’ll notice the symptoms. Watch for:
- Doors and windows that stick, swing, or won't latch: The most common early sign. A door that won't stay shut, or a window that suddenly fights you, usually means the frame has racked slightly out of square.
- Cracks in walls and ceilings: They start as hairlines, widening over months. Cracks over doorways and at corners are especially telling.
- Creaking or soft, springy floors: A floor that's lost even support under it starts to flex and creak.
- Gaps opening around trim, siding, or where walls meet ceilings.
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Furniture that rocks, or objects that roll: If a marble or ball consistently rolls to one corner of a room, that's gravity pointing at your low spot.
Any one of these can have another explanation. But several of them together are a strong signal that it's time to get under the home and check.
Tools You'll Need
If you're going to check and adjust the level yourself, gather these before you start:
📏 Long level (4-foot carpenter's level is ideal)
🔧 Hydraulic bottle jack or scissor jack rated well above the load you're lifting
🪵 Solid wood blocking to set the jack on (never jack off bare, soft ground)
🔺 Shims - hardwood or manufactured pier shims sized for the gap
🔨 A hammer or small sledge to seat the shims
🥽 Protective eyewear and work gloves
🔦 A flashlight or headlamp
🧱 Replacement pier blocks or pads, in case any have cracked or crumbled
How to Level a Mobile Home, Step by Step
Work slowly and never put any part of your body under the home while it's supported only by a jack. The jack lifts; the piers and shims hold.
Step 1: Put Safety First
Wear protective eyewear and work gloves when working under the mobile home. Be sure there is someone nearby in the event that there is an emergency.
Step 2: Remove the Skirting & Loosen the Tie-downs
Take off enough skirting panels around the base to reach the piers you'll be working on, and loosen the tie-down straps so the home can move freely as you adjust it.
Step 3: Check the Level, Starting from the Center
Begin at the center of the home and place your level on an I-beam right next to the nearest pier. Check whether the bubble sits centered.
Then, move outward pier by pier toward one end of the beam, checking at each support. Return to the center and work toward the other end, then repeat on the second beam. Note every spot where the bubble isn't centered - those are your low points.
Step 4: Raise the Low Spots
At a low pier, set your jack on a piece of solid wood blocking and slowly raise the beam. Lift only until the bubble centers, but no higher. You'll see a gap open between the top of the pier and the beam.
Step 5: Set the Shims
Slide shims into that gap until it's snug, tapping them home with the hammer if needed. Then lower the jack so the beam settles its weight onto the shims.
Recheck the level. Move along the beam and repeat anywhere the bubble wasn't centered, making small adjustments rather than big ones.
Step 6: Check Plumbing & Gas Lines
Shifting (and the act of releveling) can strain or disconnect water, drain, and gas lines running under the home. Inspect them. If anything looks pinched, cracked, or disconnected, stop and have it repaired before buttoning up. Gas issues in particular are a job for a professional!
Step 7: Retighten the Tie-downs & Reattach Skirting
Snug the straps back up and put the skirting panels back in place. Give the doors and windows inside a test - they should move more freely than before.
DIY vs. Calling a Professional
Whether you should tackle this yourself comes down to why the home is unlevel and how far out it's gone.
A DIY adjustment can make sense when:
- The home is only slightly out at one or two piers
- The cause is obvious and minor (i.e., a slipped shim, a single settled pier on otherwise firm ground)
- You have the tools, a helper, and you're comfortable working under the home
Call a professional when:
- Multiple piers have sunk, or the home is significantly out of level across its length
- Piers are cracked, leaning, or have punched into soft ground
- You find gas-line involvement, major plumbing problems, or structural damage
- The ground itself is the problem - persistent water, erosion, or a failing foundation
- You simply aren't certain
Unfortunately, there's a real cost to getting this wrong. An improperly leveled home keeps straining its own structure, and in extreme cases, an unstable home may shift dangerously or collapse.
Paying a pro for a proper releveling is far cheaper than replacing damaged framing, siding, and windows (or, in the worst case, the whole home). Saving a few hundred dollars isn't worth that risk if the job is beyond a simple shim adjustment.
When Releveling Won't Solve the Problem
Sometimes an unlevel home is a symptom, not the disease. If the underlying cause is the ground or the foundation system, the home will drift right back out of level, no matter how carefully you shim it.
Watch for these signs that you're dealing with a foundation or soil problem rather than a simple releveling job:
- Piers that keep sinking after you've reset them
- Standing water, chronic moisture, or visible erosion under the home
- Footings that have cracked, shifted, or sunk into the soil
- The home going noticeably out of level again shortly after a releveling
- Widespread, worsening cracks that return after repair
When the foundation is the real issue, the fix isn't more shims; it's stabilizing what the home sits on. That can mean improving drainage and grading, installing proper footing pads, or moving to an engineered foundation and anchoring system built to hold a home steady on the ground you have.
Options like the XI2 foundation system are designed to give a manufactured home a stable, code-compliant base, and a proper anchoring setup - including cross-drive anchors - keeps the home resistant to soil movement.
Seeing the foundation-level warning signs above? Bring in a professional who can assess the ground and the foundation system, not just the piers. Chasing the level over and over without fixing the base wastes money, all while structural strain keeps building.
Keep it Steady with Star Mobile
An unlevel home often leaves damage in its wake: warped doors that never sit right again, cracked siding, windows that won't seal. If you're repairing that damage, Star Mobile Home Supplies has one of the largest mobile home parts inventories in the country, from doors and windows to skirting, tie-downs, and the hardware that keeps your home solid.
