Sagging Plaster Ceiling Screws

Insert a 1 5 8 inch drywall screw through the center of a plaster washer.

Sagging plaster ceiling screws.

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. Secure sagging plaster to the lath above by using screws and plastic washers. Or 1 1 4 long is sufficient. Insert drywall screws with washers in the holes to draw the sagging plaster ceiling upward on the lath.

Or add furring strips and a second layer of 5 8 in. Laths are the wood slats that run perpendicular to the joists. 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. You can use plywood 1 4 in.

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. What old house owner doesn t have a cracking or sagging plaster ceiling in need of repair somewhere. 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. If your ceiling drywall is.

Should i use 6 or 8 thickness. Thick and either screw it to the ceiling or prop it up with wooden supports from below. And regular drywall screws or deck screws to prevent corrosion emanating from plaster. Allow the glue to cure for the time specified on the label directions.

Drill 1 8 inch pilot holes for the new screws. Sagging in a ceiling may be caused by undersized drywall. Thickness of the plaster varies so be sure the screws are long enough to go through the plaster and lath. What screws to use with plaster washers in a sagging plaster ceiling.

Now the ceiling needs to be pressed upward until the plaster is back against the lath just where it belongs. 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. You either have to replace 1 2 in. Don t forget to cover the plywood facing the ceiling with polyethylene plastic so it doesn t bond to the glue.

Use a utility knife to create a smooth edge. Plaster is 3 8 lath is 1 2. Ceiling drywall that sags between joists or trusses is sometimes called pillowed drywall. Repairs become a bit more complicated when the plaster is sagging.

Remove loose plaster from any holes in the ceiling.