If you use fiberglass mesh tape, cut a length of tape, place it over the joint first and press the tape firmly down across both pieces of drywall. Next apply the compound over it.

Caption: Laura Chase had asbestos testing done in her bathroom and a test of the drywall joint compound in the bathroom ceiling came back positive. (Submitted by Laura Chase) ...

If you use fiberglass mesh tape, cut a length of tape, place it over the joint first and press the tape firmly down across both pieces of drywall. Next apply the compound over it.