Fasten as many screws as needed to the ceiling to secure the plaster to the lath image 1.
Repair lath plaster ceiling step through attic.
Adding wire lath over wood lath improves an infill repair.
There is even a system available in the states called big wallys plaster magic or you can see an video that explains the principles here gluing lath and plaster.
First you should be sure to clean the surface from any loose plaster.
Apply wallboard tape and wallboard compound to all four sides of the patch.
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.
Insert a 1 5 8 inch drywall screw through the center of a plaster washer.
Insert the wallboard patch into the hole and drive screws through the wallboard patch into each wallboard repair clip.
Scrape away any loose veneer.
Follow the same process if you re working on the lath side leaving adhesive wipe up as an optional step.
When the tape and first coat are dry apply a second smoothing coat.
Sand down any excess drywall compound and then prime.
Use a drywall screw with a plaster washer to re secure the damaged sections of plaster to the lathe.
Complete your entire series of holes then go back over the plaster with a clean damp sponge to remove further glue residue.
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.
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.
Secure the plaster with forms.
Repair lath plaster after stepping through the ceiling kirk giordano plastering inc.
Mix the plaster filler as directed to by the instructions that come with it.
Secure the patch with 1 5 8 drywall screws.
Snap off the temporary tabs from the repair clips.
For areas where the washers don t hold or the plaster is very damaged cut out the plaster and create a patch using drywall.
Then the hole is filled with successive layers of plaster as described above.
To patch a hole in the ceiling plaster metal lath is fastened over the wood lath.