New answers tagged patch
Cut a square of drywall or wood roughly the size of the original hole. Place it over the original area and trace with a pencil. Then cut out the traced area and glue it in the hole. Then use the fiberglass patch. You need something to hold the screw and the plaster alone will not do.
I first use a mini wire brush,not too stiff bristles..you can sand some too,then vacuum all dust out.Then apply a rust coverter(i use OSPHO)this will"kill"and convert any remaining rust to "black"metal.Wait 24 hrs.then I tape off 1/2 inch outside of problem area(I use blue painters tape..much easier to remove than regular masking tape),then tape newspaper to ...
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