Why ceilings sag
A ceiling bows downward for one of a few reasons, and the fix depends on which one you have:
Water. The most common cause. A slow leak from above soaks the board, and wet drywall gets heavy and soft. The board sags between the joists. If you also see stains, this is almost certainly your answer — see our roof leak and plumbing leak pages.
Too few fasteners. Drywall ceilings need screws every 12 inches along the joists. Somebody who spaced them wider — or used nails that worked loose over the years — ends up with board pulling away and sagging between attachment points. Common in older homes around Waldorf and in quick flip jobs.
Wrong board. Half-inch drywall on 24-inch joist spacing sags under its own weight over time, especially with heavy texture on it. Ceilings on wide joist spacing need 5/8-inch board. If your ceiling was hung with the wrong thickness, the sag will keep coming back until it is re-hung right.
Heavy texture or extra layers. Multiple layers of texture, or a second layer of drywall hung over the first, adds weight the fasteners were never sized for.
Is it dangerous?
Honest answer: a mildly sagging ceiling is usually stable in the short term, but it does not fix itself and it does not stop getting worse. A ceiling that is visibly bowing, with seams cracking open or tape peeling away in strips, should be looked at soon — wet, heavy board can let go. Do not push up on it to "test" it. If it looks alarming, call us and describe what you see; we will tell you whether it can wait for a scheduled visit.
How we fix it
1. Find the cause. We look above the ceiling — water source, fastener pattern, board thickness, joist spacing. The cause decides the fix.
2. Take down what failed. Sagging board comes out. If water caused it, the source gets fixed first (roof, plumbing) and everything dries before we rebuild.
3. Re-hang it right. Correct board thickness for your joist spacing, screws at proper spacing into every joist, seams taped, three coats, sanded, texture matched. A ceiling rebuilt this way does not sag again.
Sometimes the fix is smaller: if the board is solid and just pulling away from a few fasteners, we can re-fasten it with screws and refinish the area. We do the small fix when the small fix is the right fix.
A note on prices: every job needs different work, and material and labor costs move around. Treat any numbers here as starting points, not quotes. The written price we give you after our free visit is the real number for your project.
Re-fastening and refinishing a solid-but-sagging section typically starts in the low-to-mid hundreds as a rough starting range. Full tear-out and re-hang of a room runs higher. Your free written estimate is the real number.
Get your free estimate
Call (240) 213-2890 or send the form. We come look, measure, and give you a written price — free, no pressure.