Posts: 12,858
Threads: 0
Joined: Jan 2010
Location: Lewiston, NY
Wow, that's an amazing price for the double wall polycarbonate. When I looked last year when I built my solar wood kiln the lowest price I could find for double wall was around $80. I didn't look to see what the shipping cost would be on this stuff, however, so maybe the amazing price is less amazing when that's added in. Looks aren't that important for me, so I went with the cheap single wall corrugated SunTuf panels at $44 for 4x8 coverage (2 panels) and added a layer of 4 mil plastic sheathing on the inside of the roof rafters. That gives smoother airflow, too, for the recirculating air fans. Probably unimportant in a greenhouse, but definitely a consideration in a solar wood drier. Anyway, the SunTuf panels held up fine over the first Winter.
What wood are you using for the greenhouse? Looks like mahogany or Sapele. In any case, it looks high end. Nice work.
John