Greenhouses

I'm in a quandary. We want a greenhouse. One of the nice ones cost about $10,000 for the size we want. I can make the metal structure (I'm a welder) with even curved top pieces instead of PVC, but would consider PVC as it is much cheaper than steel. I'm having trouble finding clear (or nearly clear) visqueen with fabric molded in, but will locate some of that. I have a walking foot upholstery sewing machine, so I can make all the panels, complete with grommets, snaps, and zippers. I know I can build this for a whole lot less than $10k.
Anyone have experiences of making their own greenhouses they'd like to share? Particularly woven poly? Suppliers I've found have like 10,000 sf minimums.
How about overhead hanging drip mist watering systems? In-line fertilizer dispensers? Heaters? Raised boxes for small crops like herbs and such? Other things?
Ramble on about what you know. I'm listening.
Steve
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SteveB wrote:

First, I know nothing about greenhouses.
I do know something about solar and finding (or rather not finding) clear polyethelene. Only the wrapper it comes in ever really seems to be clear.
I suppose you've tried the greenhouse supply companies in your country.
What I use is corrugated polycarbonate (widely available in the US, OZ and NZ), I suppose with your lower temperature needs you could use PVC. Both materials are crystal clear. For framing I use wood that's been primed and with a good exterior paint on top. You can get screws with rubber seals to secure the glazing.
The polycarb has a very long life, which may offset your material costs.
I trust/hope I haven't stopped any greenhouse experts from posting....
Jeff

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'Jeff[_14_ Wrote: > ;849840']SteveB wrote:-

> about

> welder)

> it is

> clear) -

> be

> country.

>

> costs.

> posting....

> a

>

> for a

>

> 10,000 sf

> fertilizer

> such?

- First time I have posted, I was interested to read this thread as I am also under the impression that if the greenhouse is still a hobby rather than commercial it would be hard to be able to build anything as cheaply as you can buy at the moment, especially in the current economic climate, there are some really good deals out there. We do a combination deal (UK only - sorry) where you get the greenhouse including guttering, and base (www.mrgreenhouse.co.uk). Polycarbonate is a great material, which you can buy opaque or crystal clear. Also try to find a twin polycarbonate as it diffuses light preventing scorching. It also is low maintenance and virtually unbreakable, which can also be a bonus if you have children or pets.
So think about all the options carefully before going ahead and building or even purchasing a greenhouse.
www.mrgreenhouse.co.uk
-
--
Susan Ranson


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wrote:

Norm Abrams made a really nice greenhouse, covered in two half-hour shows. The sides/top were made of a clear corregated panels with special tape allowing the tubes to drain. The panels provide better insulation than glass or plastic. And it had a window, powered by a bimetal strip, that opened and closed to temperature changes. Then he built shelves to hold pots. Sadly, the greenhouse sat unused for months until they found a gardener who appreciated the structure.
I think the PVC poles with plastic sheeting is about as cheap as you can get, even if you need to replace it in 5 years. The quanset hut style is a proven simple design. The $10K is a bit steep for plants, almost eccentric. Building a cold frame out of old windows is not exacty a greenhouse, but you can start many plants well before the last frost. I know a farmer who heated his cold frames using horse and cow manure.
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That's how it was done a century ago (and even now in "less developed" countries. Somewhere I have some 'Garden Magazine' from 1904-1906 where this is discussed. If I can find them I will try to scan the article.
--

09=ix

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We did this with our cold frames 30 years ago. Fresh Manure about 12 inches deep covered with growing soil. Then switched to electric cables then stopped. Why has no satisfactory answer. I think child rearing and shift work played a large part.
Bill
--
Garden in shade zone 5 S Jersey USA

No foreign intervention unless tyranny at home.
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"SteveB" wrote:

$10,000 seems more the price of a conservatory than a basic greenhouse unless you're talking commercial grower's sized. I don't think you can make a decent and functional greenhouse yourself any cheaper than to buy one already made.
Check this web site... I've been contemplating one of their lean-to style greenhouses to place at the back wall of my gardening barn (faces south), because I have electric, water, and heat there... they have other styles but I think that being attached to a solid structure the lean-to is much less prone to wind damage... also gives me more area for less money because I supply one wall. They sell lots of good products not easily found elsewhere:
http://www.teksupply.com/farm/supplies/ProductDisplay?catalogId 053&storeId001&langId=-1&division=TekSupply&productIdd846
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