I have a very large geodesic dome greenhouse made of pvc and poly sheeting. When the sun hits it gets well into the 100’s including winter. I don’t have a photo of it but I did add a wax piston window similar to how the front door was made but it leaks badly. I want to add an attic vent but again I don’t know how to attach it without having a giant hole that leaks.
by stevetheroofguy
3 Comments
You bolt a triangle of plywood into one of the spaces, cut a hole for an exhaust fan in the plywood, install the exhaust fan, attach the plastic to the plywood with spring lock wire a base.
Passive cooling of plastic structures in full sun only works for very small structures and then not super well (extremely little control of the actual temperatures)
Get creative with some bungies lines, string and probably duct tape!
Edit: I misunderstood what you were trying to do because I misread something.
Maybe a ducted / vented fan with an inlet/outlet to exchange air at a certain temp? This being low down it could negate any hole – created leakage.
Dang, I need to build one of these!