How difficult is it to regulate a GH?

[DavidCampen]

I would suggest that you would want to consider double or triple wall polycarbonate for its insulation value even though it is not transparent like glass. Double wall glass will be heavy and expensive while single wall glass will loose heat rapidly when it is cold outside (and you will get lots of condensation). I am using 16 mm (5/8 inch) triple wall polycarbonate even here in Southern California.

Originally Posted by Paul Mc

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While I would love to use thick tempered glass for this so you can see the orchids growing inside, I would presume that double panes would be necessary for better temp regulation. I don't like the looks of the anything that "blocks your view."

Rosie, I had not considered having automatic airflow shutters, but that's a great idea. I live in St. Louis, Missouri, USA, and it can get very cold to very hot here in a blink of an eye.

I am planning on including an exhaust fan, thermostat and hygrometer readers/controllers, a heavy duty electric heater, solar roof vent opener(s) (automatic shutters only), an automated mist system (as per Rosie's suggestion), and a sunscreen shade cloth, and probably a regular large fan somewhere set on a timer for semi-continuous air flow.
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