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-   -   Removable Lean-to Greenhouse (http://www.tomatoville.com/showthread.php?t=4486)

dcarch March 11, 2007 11:14 PM

Removable Lean-to Greenhouse
 
I am designing/building a removable lean-to greenhouse to gain may be more than a month's growing time in Zone 6/7. I hope to put my plants in ground 4/15. In my area I think normally it should be 5/15.

Because I don't have the room, the greenhouse will be in the same space as the final patch, so it has to be removable once the plant get to be may be 30" tall.

Once complete, I think the greenhouse can be installed and dis-assembled in less than 15 minutes and be stored away in very little room.

dcarch
[IMG]http://i73.photobucket.com/albums/i240/dcarch/lean-to.jpg[/IMG]

Rena March 12, 2007 07:02 AM

That brick/stone wall will be your friend. It will collect heat during the day and release at night!!! Do you have a place to vent it? It will heat up quick! Very cool!

dcarch March 12, 2007 07:42 AM

[quote=IMISSCOLO;49138]That brick/stone wall will be your friend. It will collect heat during the day and release at night!!! Do you have a place to vent it? It will heat up quick! Very cool![/quote]
Thanks.
Regarding venting, I will have small vent windows.
Regarding brick/stone wall, I will post a question in "General Discussions".

dcarch

ddsack March 14, 2007 06:01 PM

dcarch - how is your lean-to coming along? I hope you are taking pictures of all steps of construction and will show us the end result. I will be very impressed if indeed you can take it down and re-install it in 15 minutes. I have a south facing wall on my attached garage that could take a narrow lean-to.

Dee

dcarch March 14, 2007 06:12 PM

[quote=ddsack;49667]dcarch - how is your lean-to coming along? I hope you are taking pictures of all steps of construction and will show us the end result. I will be very impressed if indeed you can take it down and re-install it in 15 minutes. I have a south facing wall on my attached garage that could take a narrow lean-to.

Dee[/quote]

[COLOR=black]A few more parts I need to get. [/COLOR]

[COLOR=black]The concept of putting this thing together will be unique (I think) and a first for a lend-to greenhouse construction. If it works, those of us who are space-challenged and climate-challenged will have more options.[/COLOR]

[COLOR=black]I hope to finish up in the next couple of weeks. My seedlings are growing tall.[/COLOR]

[COLOR=black]dcarch[/COLOR]

mouse March 18, 2007 03:26 AM

Just a crazy thought: for a project of this dimension, the top could be made out of PTFE film, Tefzel [Dupont]or Hostaflon [Hoechst].

Tefzel used to be available in a form that had one edge with adhesive. See Eden Project, Cornwall, UK, visualize, longitudinal 'pillows'. Very good lightweight double-walled, high-insulation top requiring comparatively less structural support while shedding snow/wind/rain.

Tallman & Demarest, architects, Ithaca, NY, well-versed in these pillows. I have no financial connections whatsoever with them.

PTFE can also be used for a lightweight half-hoophouse, 2 layers, inflated. Much, much lighter than plastic, high light transmission, strong. Worth a thought for future projects.

m

dcarch March 18, 2007 07:34 AM

[quote=mouse;50377]Just a crazy thought: for a project of this dimension, the top could be made out of PTFE film, Tefzel [Dupont]or Hostaflon [Hoechst].
Tefzel used to be available in a form that had one edge with adhesive. See Eden Project, Cornwall, UK, visualize, longitudinal 'pillows'. Very good lightweight double-walled, high-insulation top requiring comparatively less structural support while shedding snow/wind/rain.
-------------------------
PTFE can also be used for a lightweight half-hoophouse, 2 layers, inflated. Much, much lighter than plastic, high light transmission, strong. Worth a thought for future projects.
m[/quote]

Very interesting material. I haven't seen it being commomly used. Must be very expensive. I have gotten 4mm Twinwall poly panels for the project.

Can't wait until the snow melts so that I can complete the project.

thx

dcarch

dcarch March 31, 2007 12:48 PM

Progress pics.

dcarch

The three hinged support frames are attached to the base and the stone wall by screws.
[IMG]http://i73.photobucket.com/albums/i240/dcarch/1DSCN8521.jpg[/IMG]

The 4mm Twinwall poly-panels are attached to the frames by velcro and packing tape.
[IMG]http://i73.photobucket.com/albums/i240/dcarch/1DSCN8528.jpg[/IMG]

Tomstrees March 31, 2007 02:35 PM

Dcarch -

This is how you're going to beat me for earliest tomato ...
A couple just went ripe in my window - I know they don't count, and I've seen yours all winter -
But we're on !!!

~ Tom

[IMG]http://i37.photobucket.com/albums/e94/tomstrees/Start2007Cont.jpg[/IMG]

dcarch March 31, 2007 10:21 PM

[quote=Tomstrees;52647]Dcarch -

This is how you're going to beat me for earliest tomato ...
A couple just went ripe in my window - I know they don't count, and I've seen yours all winter - But we're on !!!

~ Tom[/quote]

Trying to get my seedling s in ground 4/1!!!:)

dcarch

Tomstrees April 1, 2007 08:11 AM

Very cool ! I've never heard of that before ~
Growing them in a greenhouse, that you can "take apart" once
the weather gets better ... huh !

What ? Me worry ??? lol

~ Tom

Rena April 2, 2007 08:01 PM

Is there a place to vent? It is amazing how quick that gh will heat up.;)

dcarch April 2, 2007 08:09 PM

[quote=IMISSCOLO;52971]Is there a place to vent? It is amazing how quick that gh will heat up.;)[/quote]

Just completed the thing yesterday.
You are absolutely correct that heat builds up.
With a little sun, 58 degrees outside, it was 108 degrees inside!
Night time; 36 degrees outside, it was 55 degrees inside (nice!)

I have put together a thermostat controlled fan to vent it. I will install it tomorrow.

dcarch

Rena April 4, 2007 09:01 AM

Target has the remote stats pretty cheap. In the morning the first thing I do is check the outside temp then the gh temp, just habit. It is getting to the time that the vents and fans aren't cutting it and it will be time to shut it down. I also found some cheap clip on fans at walmart that I move around. Helps with pollination.

Tomstrees April 4, 2007 09:34 AM

Dcarch -

Once its on - is it going to be easy to get off without damaging plants ?

Also, is it just going to be a cold frame with plants in pots - or plants rooted in the ground ?

~ Tom


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