Sagging Plaster Ceiling Screws

Thickness of the plaster varies so be sure the screws are long enough to go through the plaster and lath.

Sagging plaster ceiling screws.

And regular drywall screws or deck screws to prevent corrosion emanating from plaster. Or 1 1 4 long is sufficient. Drill 1 8 inch pilot holes for the new screws. Thick and either screw it to the ceiling or prop it up with wooden supports from below.

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. Sagging in a ceiling may be caused by undersized drywall. 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. Should i use 6 or 8 thickness.

Don t forget to cover the plywood facing the ceiling with polyethylene plastic so it doesn t bond to the glue. Position the pilot holes 2 inches apart and make a circle with them around the loose plaster ceiling. Repairs become a bit more complicated when the plaster is sagging. The adhesive will seep out through the drywall screw holes.

You either have to replace 1 2 in. Ceiling drywall that sags between joists or trusses is sometimes called pillowed drywall. Now the ceiling needs to be pressed upward until the plaster is back against the lath just where it belongs. Insert a 1 5 8 inch drywall screw through the center of a plaster washer.

Use a utility knife to create a smooth edge. 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. Plaster is 3 8 lath is 1 2. What screws to use with plaster washers in a sagging plaster ceiling.

Or add furring strips and a second layer of 5 8 in. If your ceiling drywall is. You can use plywood 1 4 in. Remove loose plaster from any holes in the ceiling.

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. Allow the glue to cure for the time specified on the label directions. Insert drywall screws with washers in the holes to draw the sagging plaster ceiling upward on the lath. Fixing a sagging plaster ceiling.

Secure sagging plaster to the lath above by using screws and plastic washers.