How to Make a DIY Greenhouse

How to Make a DIY Greenhouse

We helped Josh’s wife make a DIY Greenhouse with help from Lowe’s. It was a fun & challenging build, but Lowe’s is the perfect partner to help you finish your fall projects and
get back to enjoying what matters. Look below for everything we used in this project!
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TOOLS & SUPPLIES (affiliate links):
Sunlite Polycarbonate Sheets:
Brown Engineered Panel Siding:
Tuftex 6mm H Channel:
National Hardware Spring Hinges:
Kreg Accu-Cut:
30 Seconds Outdoor Cleaner:
Bostitch Framing Nailer:
DeWalt 20-volt Circular Saw:
DeWalt 20-volt Jigsaw:
DeWalt Drill & Driver Combo:
DeWalt Miter Saw:
Union Washer Wood Screws:
Keter Shelving Unit:
Accord Ventilation Register:
AcuRite Digital Thermometer:


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Josh’s wife is really into gardening and planting beautiful greenery leading to her desire for a greenhouse. This way, she can keep her plants alive during the winter months and incubate some new plants so they’re ready for the spring.

Josh began the design with a 3d model in Fusion 360. We got our bill of materials and the cut list then headed to our local Lowe’s to get the supplies to begin framing the structure. I chose to use pressure treated lumber for this exterior addition to resist the moisture and humidity that may build up inside the greenhouse. Using Josh’s measurements, we nailed together the floor and added the front and back wall studs.

Before adding a structure to your yard, you may chose to grate and level the area beforehand. Josh didn’t want to tear up the yard, and here in Kentucky, the clay is super hard. In lieu of digging into the ground to level it, we chose to level the floor frame by adding 2×4 posts semi-driven into the ground. This way, Josh and i could level the floor and nail it to those posts along the span of the greenhouse. Now that we had a level surface to work from, we continued to build out the frame by connecting the front and back studs and then connecting those two walls with some ceiling joists.

For the greenhouse floor, Josh wanted something that could resist any standing water that would fall down from the plants. We found some engineered siding panels at Lowe’s that are weather-resistant and come in large, 4′ x 8′ sheets. These panels are only 3/8″ thick, so we added another layer of pressure treated 1/2″ plywood to ensure the floor was strong enough to walk on. We fit three of these double-layered panels on top of the floor frame, making sure to cut around the wall studs and secured them with screws.

For the greenhouse’s exterior, it is possible to simply cover the bare frame with the clear polycarbonate sheets, but because of this greenhouse’s size, that would take more than the 10 panels we allotted for this project. We had to order the sheets from and the came in a pack of 10. So rather than sacrificing the size of the greenhouse, Josh got creative and added a decorative element to the outside that helped use less polycarbonate.

We decided to use the cutoffs of the engineered, exterior sheeting to make a skirting of wood panels that wrapped around the greenhouse. To cover any seams and to give the element some definition, Josh cut up some 1×4 trim pieces that really set the decorative element apart. It looked really nice and flowed super well with the overall design. Again, these step is optional, but it does look fantastic and it helps save on the more expensive material later.

At this point in the project, we have a nice looking frame of a greenhouse. To make it functional as a greenhouse, we need a way to trap the radiant heat from the sun inside the structure. We found many ways to do this from using reclaimed windows, rolls of plastic tarp pulled tight, glass panes, and sheets of acrylic.

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I Like To Make Stuff says:

Answer to common comments:
1. The 2×4 legs won't settle much here. Our red clay doesn't move much once it's settled, and this is a high point of the yard so it drains well and never gets saturated.
2. All wood was pressure treated, rated for ground contact, so rot is many, many years away.
3. There is a small air gap between the walls and the side of the house.
4. The garage (not temperature controlled) is on the other side of that exterior wall.

HHeirloomIA says:

Instead of plastic on the door, try hardware cloth for more air flow.

Sutikare Oluwagbenga says:

The groundhogs and other varmints will thank you for their newly created domicile! The structure may have served you better being built off the ground.

SamytheGreek says:

Why use a floor at all? I would have just lined up bricks or cement block and built on top of that, leaving the grass or dirt underfoot.

Hunter Phung says:

Do you need city permission to do that?

Newton Kwan says:

What is the total material cost?

Mark Conroy says:

9.10 to 9.17 moment…. the plastic corrugated wall slides down into a trough…. ?.. Re-think this given it becomes a collector of water when it rains and druns down wall into the trough..

Mar Ke says:

Loved this video

it'sallhappening says:

Worst display of "framing" I've ever witnessed … you really have no clue what you're doing.

Brent Anderson says:

Seems like over kill, do u know what ur doing?

Rafael Perez says:

Will the wood rot? A green house is humid esp after watering plants? Also, how is your friend watering? Is there a faucet or hose connection?

D.j. Bolin says:

Hey what the plastic use used I didn't check that the size thickness

Sanny Day says:

По большей части халтура которая разлетится при сильном ветре.

ヅـمدAHMEDأحـ says:

Man! I like what u do💙

Noah Vogt says:

Do you by boards close to the size you need or buy LONG ones and cut boards in sections to use

DatCamp G says:

I enjoyed watching your video.
Thank You.


I have to do green house but i tell to worker i need full wood to make any way this great job thank for this good vedio…………….

Colin M says:

Plants need water. Water needs to run off. Good build but needs a place for water to go inside

Bimpf says:

everytime i watch on of your videos i find at least one thing that lets me cratch my head and think "What the heck?!". Sometimes minor things, Sometimes Mayor things that are essentiel for the succes of the project.
As a trained Carpenter, the way you build wooden Structures and things destined fort the outside gets me. Mostly in Terms of Stability and Durability. Many others here pointed out some Problems with this project allready:

– The Feet will rot if the Endgrain not treated. Theres is only one wood that you can put in ground contact without treating it, wich is robinia. Any other species needs to be treated. And one thing that has been drilled into me during my training is that, wood near ground needs to have a air current (the wind) around it so that moisture can be carryed away.

– the way they are attached is pushing the fraiming nails downwards lenghtwise through the grain, and on these stubby feet that is not a long way. Imagine a axe that is splitting a piece of wood, just very slowly. if you want such short feet, put the weight directly on top of the piece.

– Some Diagonal Struts along the long side of the Greenhouse would provide much more stability. Right now the Acrylic Sheets hold the bulk of the load, but over time the Sun will make them brittle and sooner or later it will collapse.

– The Plywood under the Floor collects all the water that comes from above and cant get rid of it. no drains, no air current to carry it away. Even though they are pressure treated thy will rot or even mold. The very small or non existing spaces between the decking woun´t even allow the Water to evaporate.

Those are the Mayor things that i would criticize. Mistakes that can be Made by everybody and are understandable if you dont dable with this everyday.

But what gets me fucking raging is the fact that you present these mistakes with such confidence that what you are doing is the right way to do it. You´re not trained as a Carpenter or in any other profession, and not everyone can know everthing. I get that. But it seems to me that you do 5 minutes of resarch, click on the the first entry of the Google page and thats the right way to do it. no further resarch needed, anything other i make up as i go along. Thats ok for someone who wants to show him doing these things and not for someone who wants to give people adivise and sells it to them like he knows what he is doing. Pleease Dont put "How the make…" in your title if you don´t know how to do things correctly. People will watch this, thinking that that is how you supposed to do it, how the experts might even do it, and will make the same mistakes as you. You are their First Entry on the first google page. And if you don´t put more effort in your research then them, then please dont try to tech them something. Its like a Student lectures a Student. In Germany we woukld say: You are a Klugscheißer!
i Dont Dislike your Videos, they are well produced and convey insperation for other people. I just can´t Stand the way you convey the Information.

kind regards
A German Carpenter

Pat Pezzi says:

I would not want this thing even if they make it for free. Just think of plywood on the floor! Do they think it’s a shed? These guys have never seen a real greenhouse.

Robert Morlan says:

vous nous emmerdez avec votre langue de merde, mettez des vidéos en français !!!!!!!

David Johnson says:

A beetle comes out of his butt at 2:58.

David Linken says:

He freaked out that spider @ 2:59.

thomas roering says:

Lowe's is to expansive.I shop at Menards,about 1/3 the price for the same thing

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