While I agree that in general glass is less efficient than polycarb, my Florian greenhouse seems to do quite well with it's double pane/air gap design. Last year, in our coldest month, the natural gas heating bill was right around $100 for my 18 x 11 with it's two Southern Burners. Not bad for Michigan. This year, I'm sure it will be much worse, so I am dialing down in my house. Better that I am cool than my plants.
The reason I went with glass is that I live in a city, in a historical district, and my neighbor's door is less than 20 feet away from my greenhouse - it has to look as good as it possibly can. Denise SANDRA HARDY wrote: >Maureen, >I second Ray's comments on glass as being inefficient. I'm in coastal GA >(zone 8b) & my small greenhouse (10' x 12') has twinwall polycarbonate roof >panels and single pane, tempered glass side walls. If I had it to do over, >it would ALL be TW polycarbonate. Much more energy efficient & fewer hot >spots resulting in burn spots on leaves. IMO Ray is also correct re propane >vs elec. I've used both & even at today's prices, propane is cheaper, plus >it "feels" warmer. I'm not enough of a techhie to be able to back that >opinion up with data though:) >Good luck w/your greenhouse! >Sandy Hardy >Savannah, GA > > > >_______________________________________________ >the OrchidGuide Digest (OGD) >[email protected] >http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com > > > > _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
