i would like to beef up the insulation on our sunroom ceiling and i
thought that a layer of rigid foam board with some half inch plywood and
shingles on top off that would do the trick as well as somewhat
soundproofing the room from rainstorms that can be deafening. the
ceiling(interior and exterior) is a thin gauge aluminum and i am not
sure how to attach the foam board/plywood to it. what type of fastener
would work best or combination of fastener and adhesive...i am thinking
of a fine thread type of sheetmetal screw might work.
thanks, cj