Hi, I have some cracked plaster ceilings in the upstairs of my 100 year old house. Some of these cracks were made worse when the house was re-roofed recently. The ceilings are 7.5 ft high. I'd like to put drywall up on the ceiling over the plaster. I'm a little worried about screwing drywall screws, or perhaps Spax screws, up though the plaster into the joists, mainly because I'm afraid that plaster dust or small chunks might keep the drywall from pulling up tightly, or, in a worst case scenario, the pieces would cause indents in the drywall. I've been thinking of screwing furring strips to the bottom of the plaster ceiling, making sure that the screws go into the studs. Then I put rigid insulation between the furing strips. Finally, I screw the drywall into the furring strips. Does this sound like a reasonable idea? Any thoughts and/or suggestions are welcome.
Regards, Peter De Smidt FdL, WI