Truss Uplift Ceiling Crack Repair — The Corner Crack That Comes Back
The crack along the top of the hallway wall opens in January, closes by May, and splits again after every patch — because the ceiling is moving and the tape is fighting it.
Truss uplift ceiling crack repair means stopping the re-mudding. The crack where an interior wall meets the ceiling opens every winter because the roof trusses bow up a little in the cold and settle back in spring. JMB Builders frees the ceiling drywall from the wall top plate, holds it on drywall clips or covers the corner with flexible bead or ceiling-only trim, and refinishes. Twin Cities metro, priced per wall or per room.
- Priced per wall or per room
- Ceiling floated, not re-taped
- Clips, flexible bead or ceiling-only trim
- Quote from photos in 1 business day
- Licensed MN contractor BC809005
Truss uplift is seasonal movement of the roof trusses, not a structural failure. The bottom chord of each truss sits down in the warm attic insulation while the top chords sit up in cold, damp winter air. The top chords take on moisture and grow a hair longer, the truss bows upward a little in the middle, and it lifts the ceiling drywall off the top of the interior walls. In spring it settles back down. It shows up in a lot of Minnesota houses built with trusses, most often on a center hallway or a wall near the middle of the span.
Taping that corner again does not work. The tape joins a ceiling that moves to a wall that does not, so it tears along the same line the next winter. The fix is to let the ceiling move: take the ceiling fasteners out near the wall, hold the ceiling edge on drywall clips attached to the top plate so it can float, and finish the corner so the movement has somewhere to go.
There are three ways to finish that corner. A flexible corner bead that is mudded to the wall and flexes as the ceiling rises. A plain ceiling edge with a small gap hidden by trim. Or a crown or cove trim fastened to the ceiling only, so it rides up and down over the wall paint. We look at your photos and the season and tell you which one fits the room. Movement is different in every attic, so we do not promise a corner that never shows a line again.
What you supply
- Photos of the crack in winter, and in summer if you have them, with the length of the wall
- Which rooms and walls crack, and whether it is the same walls every year
- Your trim choice if you want a crown or cove on the ceiling
- Your paint color if we are painting — quoted as its own line
What JMB supplies
- Drop cloths and masking of floors, trim and furniture
- Old tape and mud cut out of the corner along the whole wall
- Ceiling fasteners near the wall pulled so the ceiling edge is free
- Drywall clips on the wall top plate to hold the ceiling edge without pinning it
- Flexible corner bead mudded to the wall, or a ceiling-only crown or cove, per the quote
- Primer on the new mud, ready for paint
- A look in the attic at the wall connection when there is access, with photos
- Photos of the finished corners in your job folder
- Painting of the ceiling and walls when you want it, quoted as its own line
How it is priced: per wall
Quoted in writing from your photos within one business day. What moves the number:
- How many walls and how long each run is
- Flexible bead and mud vs. a ceiling-only crown or cove trim
- Ceiling texture that has to be matched along the repair
- Whether the crack has been re-taped many times and is built up
- Attic access to check the wall-to-truss connection
- Painting the ceiling and walls after, quoted as its own line
Send photos of the whole wall and a close-up of the crack with the light from the side, plus the length of each wall.
How long it takes
One hallway: a day to open the corner and float the ceiling, then a short return to finish coats and prime. A whole house of cracked corners: two to three days.
How your project works
- 1
Send photos, get a written quote
Send three photos of the space and a sentence about what you want. You get a clear, itemized quote within one business day. We only come out to measure first when the job needs a tape measure — no pressure, no games.
- 2
Pick materials, or bring your own
We help you choose profiles and materials that fit the house and the budget, or match your existing millwork exactly — or you buy the door or trim yourself and we install it. Everything is confirmed before the crew is scheduled.
- 3
Clean, precise installation
The crew shows up on time, protects floors and furniture, and installs with tight joints and consistent reveals. Photos of the finished work go in your job folder.
- 4
Walkthrough and invoice
We walk the finished work with you. If anything is not right, we fix it before we call the job done. Then one invoice, paid by check or direct deposit — no card fees, no payment links.
Situations and options
Flexible corner bead
The ceiling edge is freed and held on clips, and a flexible bead is set in the corner. It is mudded to the wall side and bends as the ceiling moves, so the tape is not torn every winter. Primed and painted like any other corner.
Ceiling-only crown or cove
A crown or cove trim nailed to the ceiling only, not the wall. When the ceiling rises in winter, the trim rises with it and slides up the wall paint instead of cracking. Good in rooms that would suit a crown anyway.
Whole-house corner pass
Every wall that cracks, done in one visit. Common in split levels and ramblers where the same center wall and the hallway walls open every winter.
Truss Uplift Ceiling Crack Repair — The Corner Crack That Comes Back: questions, answered
What is truss uplift?
Truss uplift is seasonal movement of the roof trusses. In winter the top chords in the cold attic air take on moisture and lengthen a little, while the bottom chord stays warm and dry under the insulation, so the truss bows up in the middle. It lifts the ceiling off the interior walls and leaves a crack at the corner. In spring it settles back down.
Is truss uplift a structural problem?
Truss uplift on its own is normal seasonal movement, not a structural failure. The trusses are moving the way wood moves with moisture and temperature. What it damages is the finish: the tape and paint at the wall-to-ceiling corner. If there are other signs, such as a sagging ceiling, cracked framing or a truss that was cut, that is a different problem and is looked at by an engineer.
Why does the crack where the wall meets the ceiling come back every winter?
Because the ceiling is attached to trusses that rise in winter, and the tape joins that moving ceiling to a wall that does not move. Every winter the ceiling lifts and tears the tape along the same line. More mud does not change that. The fix is to free the ceiling edge and finish the corner so it can move.
How do you fix truss uplift cracks for good?
We cut out the old tape, pull the ceiling fasteners near the wall, and hold the ceiling edge on drywall clips on the wall top plate so it floats. Then the corner is finished with a flexible bead or covered with a trim nailed to the ceiling only. It lets the ceiling move without tearing the finish. Every attic moves differently, so we do not promise the corner will never show a line.
What time of year should truss uplift cracks be repaired?
It can be done any time of year once the ceiling is floated, because the new corner is built to move. If the crack is only taped again, timing matters, and it will crack again the next season. We look at whether it is open or closed on the day we start and set the clips and bead to suit.
Can crown molding hide truss uplift?
Yes, if it is fastened to the ceiling only. A crown or cove nailed to the ceiling and not the wall rides up in winter and slides down in spring, and the gap it leaves on the wall paint is small and hidden in its shadow. Crown nailed to both the wall and the ceiling will crack its caulk the same way the tape did.
Recent JMB work, from our job log
59 installs recorded across 30 Twin Cities communities since Dec 2025. Window and door installs for homeowners and for the builders and dealers we sub for. Counts come straight from our job log; no customer names.
Get a written quote for this job
Three photos and a sentence is enough. You hear back within one business day. Or text the photos to 763-204-2099.
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Read morePage reviewed September 26, 2026 · JMB Builders LLC, MN license BC809005 · All drywall pages
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