Sagging Plaster Ceiling Screws

Or add furring strips and a second layer of 5 8 in.

Sagging plaster ceiling screws.

Thickness of the plaster varies so be sure the screws are long enough to go through the plaster and lath. Insert a 1 5 8 inch drywall screw through the center of a plaster washer. Drill 1 8 inch pilot holes for the new screws. Remove loose plaster from any holes in the ceiling.

Ceiling drywall that sags between joists or trusses is sometimes called pillowed drywall. What old house owner doesn t have a cracking or sagging plaster ceiling in need of repair somewhere. The adhesive will seep out through the drywall screw holes. You can use plywood 1 4 in.

Allow the glue to cure for the time specified on the label directions. Use your drill to drive the screw into the sagging plaster a few inches from the edge of any holes you created in step 1. This means that the plaster keys have come loose from the wood or wire lath that supports it which is a big problem for ceilings. Now the ceiling needs to be pressed upward until the plaster is back against the lath just where it belongs.

Secure sagging plaster to the lath above by using screws and plastic washers. Plaster is 3 8 lath is 1 2. Don t forget to cover the plywood facing the ceiling with polyethylene plastic so it doesn t bond to the glue. 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.

Or 1 1 4 long is sufficient. You either have to replace 1 2 in. Should i use 6 or 8 thickness. Besides the normal wear and tear of living plaster and lath ceilings are at the mercy of gravity and they can take only so many water leaks and structural movements before they pull away from the framing.

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. And regular drywall screws or deck screws to prevent corrosion emanating from plaster. Fixing a sagging plaster ceiling. Sagging in a ceiling may be caused by undersized drywall.

Use a utility knife to create a smooth edge. What screws to use with plaster washers in a sagging plaster ceiling. Laths are the wood slats that run perpendicular to the joists. Thick and either screw it to the ceiling or prop it up with wooden supports from below.

If your ceiling drywall is.