Build Your Greenhouse

Zeez

Well-Known Member
In my second season of greenhouse growing now. Here's how it was built and how to automate.

It started off with the base posts. These are the vertical posts are the posts used in chain link fence from Lowes. I used an auger on an electric drill for the holes and then drove them home with a post driver. the height of these can vary depending on your height requirements. The intention was to space them at four foot increments with extra hoops spaced 18" in from the end for overlap in a future light depending upgrade. The four foot spacing could not be perfect because we ran into rocks and needed the base posts to be parallel.
IMG_4734.jpeg

A bender for 12' hoops (*1) was purchased and secured to a garden trailer. The bending and construction was accomplished with the help of my father in law. We took turns bending the tubes. Each hoop is made of two 12' sections of chain link fence 'top rail'.
IMG_4748.jpeg

The pipes have tapered ends so they connect fitting one end inside the other. These were drilled and bolted at the connection for strength. All base posts were cut to be the same height and the hoops went in. Initially it looked like a mess.
IMG_4752.jpeg

As the longitudinal stringers went in everything started falling in place and it started looking more correct. The stringers connect to the hoops with galvanized purlin clamps (2*).
IMG_4767.jpeg

The side stringers were set to be the height for the top of the roll up and the top of the screen. Next the gable ends started with door posts cut long enough that they could be set in the ground for rigidity. The gable end construction used end clamps (3*) pivot clamps (4*) and elbow clamps (5*) on the door corners. 6x6 PT was used on the base of the sides and the base tubes were bolted through. This adds allot of weight to keep the house from flying off into the trees.

.

IMG_4836.jpeg

2x3 wood was set on the side stringers for the wiggle wire (6*) channels to keep the flat across the hoops. Wiggle wire channel was also put on the hoops strategically and in anticipation of the future light dep upgrade.

IMG_4850.jpeg

Innitially one fan was installed.

IMG_4882.jpeg

There were problems with too much heat. A second fan was installed and a duct was fabbed to pull heat out of the top. 40% shade cloth was also used to keep the heat down.
IMG_5021.jpeg


IMG_5023.jpeg


IMG_5274.jpeg

To Be Continued.
 
Last edited:

Zeez

Well-Known Member
Here is the roll up motor assembly.motor.jpg

Season One the fans were running constantly during daylight hours. The solution was to build a ridge vent. With the ridge vent the fans are not needed very often and the ceiling duct was removed. Mostly the fans are used now for air changing at night to prevent condensation. This gives a pretty good view of how the wiggle wire goes in to hold the film and the screen. You can also see the type of clamps used in these pics.
IMG_1270.jpeg

The final upgrade was to use lights because the early spring days are just not long enough. Man does this thing glow in the dark.
IMG_1279.jpeg
 
Last edited:

Joedank

Well-Known Member
In my second season of greenhouse growing now. Here's how it was built and how to automate.

It started off with the base posts. These are the vertical posts are the posts used in chain link fence from Lowes. I used an auger on an electric drill for the holes and then drove them home with a post driver. the height of these can vary depending on your height requirements. The intention was to space them at four foot increments with extra hoops spaced 18" in from the end for overlap in a future light depending upgrade. The four foot spacing could not be perfect because we ran into rocks and needed the base posts to be parallel.
View attachment 4645028

A bender for 12' hoops (*1) was purchased and secured to a garden trailer. The bending and construction was accomplished with the help of my 80 year old father in law. We took turns bending the tubes. Each hoop is made of two 12' sections of chain link fence 'top rail'.
View attachment 4645039

The pipes have tapered ends so they connect fitting one end inside the other. These were drilled and bolted at the connection for strength. All base posts were cut to be the same height and the hoops went in. Initially it looked like a mess.
View attachment 4645041

As the longitudinal stringers went in everything started falling in place and it started looking more correct. The stringers connect to the hoops with galvanized purlin clamps (2*).
View attachment 4645050

The side stringers were set to be the height for the top of the roll up and the top of the screen. Next the gable ends started with door posts cut long enough that they could be set in the ground for rigidity. The gable end construction used end clamps (3*) pivot clamps (4*) and elbow clamps (5*) on the door corners. 6x6 PT was used on the base of the sides and the base tubes were bolted through. This adds allot of weight to keep the house from flying off into the trees.

.

View attachment 4645054

2x3 wood was set on the side stringers for the wiggle wire (6*) channels to keep the flat across the hoops. Wiggle wire channel was also put on the hoops strategically and in anticipation of the future light dep upgrade.

View attachment 4645055

Innitially one fan was installed.

View attachment 4645058

There were problems with too much heat. A second fan was installed and a duct was fabbed to pull heat out of the top. 40% shade cloth was also used to keep the heat down.
View attachment 4645060


View attachment 4645061


View attachment 4645062

To Be Continued.
Most excellent build, super clean! I use the hoop bender 24’ version love it !
Best of luck this season
 

dunphy

Well-Known Member
This is the second season in. First went great. No more worries about caterpillars, leaf hoppers or any of that.

Added allot of automation this year that will be included in the thread soon.
Wow great build... I love that exhaust you have going to pull air from the peak... simple and cheap but looks super effective. my favorite.
That roof vent system is awesome too...


I would love to hear about your automation solutions.
Ive built tons of little automation systems using arduino and raspis, just regular home stuff

Love those stupid little projects that you spend way too much time and money setting up, just to do something simple like not have to press a button

Have had plans for a highly automated GH build, more on a light dep cover/uncover system, and environmental, mainly focusing on that side of things versus the watering or something.

Do you use a custom solution or some sort of off the shelf automation system?

Great thread, will continue to watch for sure. Thanks for the write up.
 

Zeez

Well-Known Member
Wow great build... I love that exhaust you have going to pull air from the peak... simple and cheap but looks super effective. my favorite.
That roof vent system is awesome too...


I would love to hear about your automation solutions.
Ive built tons of little automation systems using arduino and raspis, just regular home stuff

Love those stupid little projects that you spend way too much time and money setting up, just to do something simple like not have to press a button

Have had plans for a highly automated GH build, more on a light dep cover/uncover system, and environmental, mainly focusing on that side of things versus the watering or something.

Do you use a custom solution or some sort of off the shelf automation system?

Great thread, will continue to watch for sure. Thanks for the write up.

Here is the heart of the automation. It is two Z-wave strips with ten controlled outlets. Both the roll up sides and the ridge vent require two outlets each, one for the power supply and one for the DPDT relay. I will detail this a bit later if anyone is interested. The remaining outlets control water, nutrients. res agitator / aeration, exhaust fan and circulation fan. There is a secondary relay there with four DC switches. Our whole house is z-wave automation.


IMG_1556.jpeg
IMG_1558.jpeg
 

Attachments

Last edited:

Zeez

Well-Known Member
Awesome love it. Take me down the rabbit hole of your automation. Myself and This site could use this info especially for home growers like me with a 9-5plus job and kids
I use a z-wave plus controller called a Vera Plus. Z-wave is mesh network where each device you add is a repeater that furthers the signal. I like the Vera controllers because there is no subscription fee. For growing I have used it for years and did an indoor hydro drip return system for three years before going outdoor. There are z-wave controlled plug modules, humidity / temp / light sensors, motion sensors water flood sensors, it's a long list. A good controller like a Vera Plus is under a hundred dollars and a two outlet plug module can be under $30. The 5 outlet power strips shown above cost about $80. Learning to make automation rules using Vera is not difficult at all. You can make rules and conditions for automation as complicated as you want. It can be as simple as turn this on at this time every day and turn it off 30 seconds later. Very easy.
 

stealthfader508

Well-Known Member
very nice build man.. i'm gonna have to bend your ear at some point about automating my spot... i don't want that, i need it
 
Top