Opaque double wall plastic panels as insulating for heat-cool?
The solar pool cover performed well over the winter, but's heavy and was a bear to get on and off, so while we may use it again, cut into more managable sized pieces, I'd really like to find a better and more permanent solution, for both winter and summer.
There are several areas in my GH where light is already or will be will be blocked by tables, the sink and the heater, so insulating panels in those places really don't need to be light transmitting. In fact, I could block all light from the floor up to about 30" on all of the walls with no impact on my plants, as none will be set lower than that height.
I saw 4 X 8, double wall panels at a home center recently and wonder if anyone has ever thought to use them in their GH, and if so, to what result. They look exactly like the double wall polycarb in design, but opaque white and are advertised as insulating wall panels.
The store also sells caps to seal them, and if they were cut to fit snugly between the polybars, they would stay in place directly against the polycarb with no need for tape or fasteners and presumably- increase the insulating value in those places.