Hi Cathy
On (12 Sep 96) Cathy Hettinger wrote to Alec Cameron...
 CH>      The air in the roof space in a Florida home must get pretty
 CH> significant. My concrete block house does not have a discernible roof 
vent
 CH> area - just the holes in the overhang.  If the air could be evacuated 
more
 CH> easily I'm sure it would make a difference in temperature.
Good news, bad news! There are times when the air up there should not escape,
like at the beginning of a very hot sunny day. While the trapped air is 
ooler
than outside air it helps keep the rooms below cool. But later [2pm?] the 
oof
air will be too darned hot and it should be driven out otherwise it will heat
up the rooms below.
Ideally, there should be a temperature responsive vent that stays closed
normally then opens fully when the roof air is too hot.  Cheers.......ALEC
... ........The best carpenters make the least chips
--- PPoint 1.92
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