Ceilings
Ceiling Drywall Repair
Ceiling cracks, sagging panels and stained board cut out, replaced and refinished.
- Pricing
- Estimated after an on-site measure
- Timeline
- Scope set at the measure; staining is traced to source first
What ceiling drywall repair covers
Ceilings fail differently than walls. They carry their own weight across a span, they sit directly under the attic and everything in it, and they are lit in a way that exposes every imperfection. A repair that would pass without comment on a wall is visible from the doorway on a ceiling.
Three problems account for most ceiling work: cracking along panel joints, sagging between joists, and staining from above. Each has a different cause and a different fix, and treating all three as patching jobs is why so many ceiling repairs come back.
Why is the crack a straight line?
Because it is following a joint. Panel joints are the weakest line in a ceiling, so when the structure moves, that is where it opens. The crack looks manufactured because it is tracing something manufactured.
Two things drive that movement here. The first is seasonal slab movement: Montgomery County’s expansive clay swells through wet months and shrinks through dry ones, and a slab-on-grade foundation carries that motion up through the framing. The second is truss uplift, where attic trusses flex with humidity and temperature swings and lift slightly at the centre, opening a crack along the line where the ceiling meets the wall.
Truss uplift has a distinctive signature: the gap appears in one season and partly closes in another. It is a structural behaviour rather than a defect, and the durable fix is usually to let that joint move rather than to lock it rigid.
Sagging between the joists
Sag is nearly always one of three things. Half-inch board was used where 5/8 inch belonged. Fasteners were spaced too widely. Or the gypsum core took on moisture and deformed.
Gulf Coast humidity makes all three worse, and attic heat above an uninsulated ceiling accelerates the third. Once a panel has visibly sagged, the core has already deformed and it does not recover, so the section is replaced rather than re-screwed. Screwing a sagged panel back up flattens it temporarily and leaves a wave that catches light forever after.
What each symptom points to
| What you see | Usual cause | What it needs |
|---|---|---|
| Straight crack along a line | Panel joint opening under movement | Cut out, reinforce, bed in setting compound |
| Crack where wall meets ceiling | Truss uplift, seasonal | Joint allowed to move rather than locked |
| Wave or dip between joists | Undersized board or wide fastener spacing | Section replaced with 5/8 inch |
| Brown ring or halo | Historic leak above | Source traced, then stain-blocking primer |
| Soft or crumbling area | Active or recent moisture | Cut back past the last wet meter reading |
Staining, and why paint will not cover it
A brown ring on a ceiling is mineral deposit left behind as water evaporated. It is still chemically present after everything dries, and latex paint does not stop it migrating back through the film. Roll white over it and the ring returns over the following weeks.
The area needs sealing with an oil-based or shellac-based stain-blocking primer before any finish coat. And the source needs tracing first, because a stain that is still growing is an active leak. Around here the usual culprit is attic HVAC condensation rather than the roof, since air handlers sit in hot attics across most of the county and a blocked condensate line overflows onto whatever is below. That work is covered under water damage drywall repair.
How the repair runs
- Identify whether the cause is movement, fastener failure or moisture, and trace any leak to source first
- Contain the room and protect floors
- Remove compromised panel back to sound framing
- Verify joists are level and correctly spaced before new board goes up
- Hang 5/8 inch ceiling-rated board, tape and float
- Seal any staining, then re-texture and blend past the repair edge
Compound builds more slowly on a ceiling than on a wall, because gravity is working against every coat. Thin passes with proper drying time between them are the only way to get a flat result, and rushing that stage produces the ridges that raking light then advertises.
Textured ceilings
Where the ceiling is textured, the texture comes off across the repair zone first so the structural fix can be made against clean board, then goes back on and is feathered past the edge. Done properly the transition falls outside normal viewing angles.
Matching an aged texture is harder than matching a new one, because paint layers soften the profile over the years. A sample gets worked up before the full application on anything hand-applied. If the ceiling is coming smooth instead, that is popcorn ceiling removal territory, and it is often the better call once a ceiling needs significant repair anyway.
Homes across The Woodlands and Panorama-area Conroe built in the 1980s and 1990s tend to show all of these at once: textured ceilings, half-inch board, and thirty years of slab movement behind the cracks.
Materials and specifications
What we work with
- Five-eighths-inch ceiling-rated gypsum board
- Ceiling-rated screws and back clip systems
- Setting-type joint compound
- Oil-based or shellac stain-blocking primer
What it has to meet
- Joist spacing and framing checked for level before new board goes up
- Five-eighths panel to resist sag across the span
- Stain-blocking primer over any discolouration so it cannot bleed through
- Compound built in thinner passes than a wall, because gravity works against every coat
- Texture re-sprayed and feathered past the repair edge
How this work is usually covered
- Workmanship cover on ceiling repair across the trade commonly runs one to two years on seam integrity and finish.
- Where the underlying cause is roofing, plumbing or HVAC, that trade's own cover governs the source repair rather than the drywall work.
That describes the trade generally. For what applies to your job specifically, ask for it in writing before work starts — from us or from anyone else quoting.