Can anyone recommend any cheapo DIY ideas on how to exhaust heat from
an attic in a house?


unlike some of the folks here, who are forgetting a very important point,
let me remind you of something:

many places in the USA have high RADON levels
(RADON, a colorless, odorless gas, is the 2nd leading cause of lung cancer,
after smoking)

many of the solutions that are typically presented in this group involve
exhausting attic heat via a fan, turbine, etc.

most of these are "negative pressure" solutions, i.e. they suck air out in
order to exhaust the unwanted heat

this will cause RADON to be sucked IN to your home from the ground

I suggest the following two ideas which are at least as effective and will
not introduce any RADON:


suggestions for hot attics:

1. a positive pressure solution (i.e. fan blows into attic and out a vent,
rather than sucking air out and RADON in)

2. even better is a white roof, studies have shown that a white colored roof
is 7 times as efficient for eliminating attic heat than any vent, fan, or
turbine system


YFH