To avoid cracking the plaster and creating an even bigger repair job don t pull the plaster tight to the lath in a single motion.
My plaster ceiling is sagging.
I prefer using a product called big wally s plaster magic to reattach sagging plaster in my projects and i ll walk you through the steps below.
Left untreated ceiling cracks will enlarge or the weight of a sagging plaster ceiling can pull the surrounding ceiling down with it.
Flaking and cracking plaster are relatively minor repair items but when the plaster starts to sag or belly out from a wall or ceiling it indicates deeper problems.
Plaster is heavy and it needs a solid well anchored base to support its weight.
If the plaster goes back into place with no more than one half inch of play and without any crunching sounds you can fix your ceiling rather than replacing it.
Using plaster magic prevents having to skim the entire ceiling because it uses a very effective adhesive to reattach the plaster to the lathe meaning no permanent plaster washers.
Plasterboard is normally fixed.
If your ceiling drywall is.
Ceiling cracks and droops occur for a variety of reasons including improper installation moisture damage and a slipped foundation.
However the ceiling will need to be replaced if the entire section is sagging.
Cracks and sags in your ceiling can be a result of a multitude of cosmetic or structural issues.
To reattach the sagging plaster to the lath drive the washer with a power screwdriver or drill so that it penetrates the wood lath wall studs or ceiling joists.
Use a chisel or utility knife to gently remove loose or damaged plaster in the area.
Or add furring strips and a second layer of 5 8 in.
You either have to replace 1 2 in.
Work carefully to avoid damaging the surrounding ceiling.
Sagging in a ceiling may be caused by undersized drywall.
Ceiling drywall that sags between joists or trusses is sometimes called pillowed drywall.
Five reasons your ceiling is sagging whether the cracks appeared overnight or it has gradually crept in a sagging or cracked ceiling is not something to be taken lightly.
Inspect the sagging plaster.
Again this is a situation where an early repair is much cheaper than repairing a collapsed ceiling.
How to fix sagging plaster.
If insulation is the culprit you may eventually see uniform sagging across the entire ceiling.
To learn if your own sagging ceiling is a candidate for this sort of repair start by checking to see how far the plaster layer has sagged.
Small spidery cracks can become large cavernous holes if left untreated.