I re-roofed my entire house and garage in January. I went back with
radiant barrier and ridge vents AND a BLACK roof! The garage (my shop)
is now cooler than it has ever been. I lower the garage door about
half way in the afternoon to block the afternoon sun. Its the first
time I've been able to tolerate working out there during the day in the
summer. Yes, I need a fan blowing on me, but it used to be unworkable
at all.

As you know, I too, live in Houston.

Bob Davis