Cellulose Attic Insulation Question.
That would be special "ceiling board", rated as stiffer/stronger for ceiling insulation-framing spacing with insulation loads only. Sorry, no links now as continuing IP problems on my end. Sorry for the late answer.
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!