Secure the patch with 1 5 8 drywall screws.
Repair lath plaster ceiling step through attic.
To patch a hole in the ceiling plaster metal lath is fastened over the wood lath.
Fasten as many screws as needed to the ceiling to secure the plaster to the lath image 1.
When the tape and first coat are dry apply a second smoothing coat.
Insert a 1 5 8 inch drywall screw through the center of a plaster washer.
To prepare for applying the filler try to undercut the plasterwork at the edges so that there is a good grip available for the new filler.
Mud the other patches and repaired areas with the drywall compound.
Repair lath plaster after stepping through the ceiling kirk giordano plastering inc.
Scrape away any loose veneer.
Sand down any excess drywall compound and then prime.
Snap off the temporary tabs from the repair clips.
Use a drywall compound and a putty knife to spread a thick layer of mud over the screws image 2 after it is dry put on another coat.
Then the hole is filled with successive layers of plaster as described above.
A popular way is to drill 4mm holes slightly countersink the holes vacuum then squirt a thin adhesive into the hole followed by the drywall screw.
Establishing new plaster keys if the back of the ceiling lath is accessible usually from the attic or after removing floor boards small areas of bowed out plaster can be pushed back against the lath.
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.
First you should be sure to clean the surface from any loose plaster.
Secure the plaster with forms.
For areas where the washers don t hold or the plaster is very damaged cut out the plaster and create a patch using drywall.
Mix the plaster filler as directed to by the instructions that come with it.
Insert the wallboard patch into the hole and drive screws through the wallboard patch into each wallboard repair clip.
Adding wire lath over wood lath improves an infill repair.
Complete your entire series of holes then go back over the plaster with a clean damp sponge to remove further glue residue.
Apply wallboard tape and wallboard compound to all four sides of the patch.
Use a drywall screw with a plaster washer to re secure the damaged sections of plaster to the lathe.