I have desired my own greenhouse to extend our growing season for quite awhile. My husband did a lot of research and came up with a plan on just how to build a greenhouse that would work on our small homestead.This tutorial comes with printable free greenhouse plans!
Course: DIY Projects
Keyword: diy, free plans, greenhouse
Author: Mary Beth
A really good drill!
And misc other tools as needed
12 8′ long, 6 mm greenhouse polycarbonate sheets
4 16′ 2×4
4 16′ 4×4
3″ deck screws
10′ rain cap
THESE WERE THE 4×4 TIMBER:
2base endsdimensions 3 ½ x 3 ½ x 96″
2base sidesdimensions 3 ½ x 3 ½ x 113″
AND THESE WERE THE 2×4 TIMBER:
2sole plates endsdimensions 1 ½ x 3 ½ x 89″
2sole plates sidesdimensions 1 ½ x 3 ½ x 120″
12wall stud sidesdimensions 1 ½ x 3 ½ x 57″
1ridge supportdimensions 1 ½ x 3 ½, 91″
2back studsdimensions 1 ½ x 3 ½, 76″
2door frame sidesdimensions 1 ½ x 3 ½ x 81″
1cripple studdimensions 1 ½ x 3 ½ x 16″
1door headerdimensions 1 ½ x 3 ½ x 32″
2knee wall caps1 ½ x 3 ½ x 120″
1ridge pole1 ½ x 3 ½ x 120″
12rafters1 ½ x 3 ½ x 60″
Measure and cut your lumber. Approximate dimensions – always take actual length and angle measurements on structure before cutting. There’s a saying and maybe you’ve heard it before. “Measure twice and cut once”.
The first step was to build the base and then frame for the wall.
Once the wall frames were built, we attached them to the base using those 3″ deck screws.
Measure out your door frame. I wanted a screen door on mine, so my husband cut and measured the frame to fit this.
Next, install your rafters.
At this point, if you want yours painted, this is a good place to do that.
Now you can begin to add your plastic sheeting, secured with screws. This sheeting came in 8′ pieces so we cut them to size.
We also cut scrap lumber to size and added them between the wall frames for additional stability. (see photo above)
My husband also added scrap pieces of wood on the arches in the rafters.
For the vent, he just measured the space between the rafters and made two of these pieces to fit.
Lastly, he added an 10′ rain cap to the top of the roof to keep the rain out.
You can also use metal stakes to secure it in the ground.
Again, I want to stress this. These measurements are approximates. We had to cut some pieces to size as we were building it. “Measure twice and cut once”.