How To Diy A Greenhouse. The big greenhouse is going to be a large 1016 structure. However I would use real wood panels made from 14 wood slats or similar if the greenhouse is exposed to lots of rain and moisture.
To expel hot air use operable windows rooftop vents or exhaust fans. These greenhouse plans are very basic but would certainly do the job. Unusual in that its an octagonal tubular structure it has semi-rigid walls and a sloped roof with cupola vent.
How to Build Your Own Greenhouse.
And use shade cloths to block out solar heat gain. The simple hoop greenhouse pictured below was built by PondPlantGirl on instructables and cost less than 25. Diy 710 leanto greenhouse building guide backyard. It will hold your structure uptight so pay special attention to the foundations.