Greenhouses forum: greenhouse for dry storage

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Nov 18, 2017 11:03 PM CST
This might sound like a weird question for a gardening forum, but I thought I'd go where the greenhouse users are.

I've built a greenhouse with greenhouse plastic over metal piping. It is about 32' x 24' and 12' in the center. Floors are plywood over thick black plastic, so no weed growth around the edges.
I live in the south, where the summers stay hot and the winter nights dip to the 20s about a month total during the winter.

I'd like to know if anybody has experience or can advise on the humidity in an empty greenhouse. I've done searches to find out but am not using the right words or everybody writes about humidity in greenhouses that have growing green things in them. Imagine that!

I'm asking because I'd like to use the greenhouse for storage of dry goods (textiles and paper items mainly) for about a year before I use it for its intended use. I don't want to do this though if the plastic and sun will still cause there to be a lot of condensation that might cause molding on the items.

Thanks in advance!
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Nov 19, 2017 8:50 AM CST
I never consider my little gh to be air-tight. I have poly panels on a metal frame. Lots of crevices for outside air to invade.
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Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Cactus and Succulents Greenhouse Sempervivums Bromeliad
Adeniums Brugmansias Garden Ideas: Level 1 Tropicals Xeriscape Garden Art
Nov 19, 2017 9:28 AM CST
I don't know if anyone here will be able to give you a definitive answer. My guess is that the empty greenhouse will still be humid. You could use some solar vented fans to help a bit. When you're ready to use it as a greenhouse, it will be such a great size! I have a little 15 ft dome and I filled it first week!
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[Last edited by plantmanager - Nov 19, 2017 9:44 AM (+)]
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Name: Cheryl
Texas (Zone 9a)
Region: Texas Greenhouse Plant Identifier Plant Lover: Loves 'em all! Plumerias Ponds
Foliage Fan Enjoys or suffers hot summers Tropicals Garden Ideas: Master Level Garden Sages Million Pollinator Garden Challenge
Nov 19, 2017 9:40 AM CST
My empty gh stays around 30-40% in the summer. Temperatures get up to 110 degrees in Texas. And a lot of bugs hang out there when it's empty. Wasp build nests, etc..There are also some leaks when it rains. Unless your papers are plastic, air-tight protected, or protected against heat, I wouldn't chance it.
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Nov 29, 2017 2:57 AM CST
Thanks so much for all the replies and I apologize for taking so long to come back. Forgot to bookmark the site and had to search around to find out where I asked the question. Smiling

Sounds like there might be too much humidity for what I want to do. I'm going to have to rethink this. Maybe I'll move some of the stuff from the barn to the greenhouse and use the space in the barn for my storage instead. I could control things better there.

Thanks again! Bookmarking this time. Smiling I'll be back once I start growing things in the greenhouse.

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