Super Green Thumb
Posts: 2437
Joined: Mon Nov 15, 2010 10:31 pm
Location: Latrobe Pa.

Is there anything better than double glass for a greenhouse?

I now glass is very expensive for a greenhouse but the light comes through so well can anything beat it? It does out last other materials! The double glass window is insulated but should a plastic third cover be added?

Greener Thumb
Posts: 735
Joined: Mon Aug 02, 2010 2:40 am
Location: Ohio, Zone 5

Years ago I had a very small greenhouse with clouded up in a couple years.
The greenhouse I have now is double-wall polycarbonate. So far so good after 3 1/2 years, but on one thread some people had trouble with this.
Plenty of light comes through, plants grew great.

Full Member
Posts: 17
Joined: Mon Mar 20, 2017 9:54 am
Location: Southern Oregon

I had a glass green house. Now I have a Double Wall Poly Carbonate green house. I prefer the Poly Carbonate because it holds the heat better than the glass one did.
The Cons are, the double wall polycarbonate panels are more expensive than glass, and the wind has blown panels out a couple of times.

User avatar
Senior Member
Posts: 149
Joined: Mon Dec 11, 2017 4:50 am
Location: Stroudsburg, PA - Zone 6a

Double wall poly actually has better insulating properties than double glass, is much lighter, cheaper, and does a better job of diffusing the sunlight so you don't burn your plants.

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