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Old 11-08-13, 04:41 PM   #5
Exeric
Apprentice EcoRenovator
 
Join Date: Aug 2012
Location: California
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Skyking,
I think you have the right idea. No need for Suntuff. Many of us would kill for a standing seam metal roof. Those are the ideal solar collecters because they get HOT. All you have to do is paint them black on both the top and the bottom. Painting the top might be optional but you definitely should paint the bottom black. Black is the perfect energy reradiator and any energy radiation that is absorbed will then be reradiated downward.I would expect Suntuff would age, get brittle, and crack after not too long anyway.

Like Daox said, just put in a movable damper going to the roof vents. If I had it to do over again I wouldn't have put an electric damper in that position, because you will probably only move its position twice a year. Its function is too important in my opinion to be left to a motor that could fail. Just make sure you have access to the manual damper without tearing things apart too much. Then add insulation of your choice and stir.
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