On Nov 12, 1:20*am, "benick" wrote:
"Malcolm Hoar" wrote in message


Plywood? What about fire resistance ?

What about it ??? You've never seen a wood ceiling in a house ??? The only
place you need a fire resistant ceiling is in a garage with living space
above it and in some places kitchen ceilings with living space above it
are required to have 5/8 fireshield sheetrock.....HTH...

And, regardless of code, over furnaces. Not as much of an issue with
newer high efficiency units, but the old boilers and burners kicked
off a lot of heat, which would dry out the wood and over time would
lower the combustion temperature of the framing.

R