by Enzo » Sat Dec 12, 2020 3:16 am
In my ancient house in the country, for a while we had a HUGE garden and did all manner of hippie living off the land stuff. The garden required starting plants early to be transplanted after frost ended. ALong the south side of the house, I built a lean-to greenhouse. It had 2x6 frame pieces and was 20 feet long, and the bottom stood out 10 feet from the wall. I covered it in clear plastic inside and out. ON a sunny day it got darn warm in there. Easy to grow tomato sets and whatnot in there. it covered the window to the bathroom, and also a door into the kitchen and basement stair.
I put a 16" window fan in the bathroom window blowing in, and left the door open. On even the coldest day - and I mean cold like 10 degrees F - the heat from that add-on kept the home furnace from coming on at all. Even on cloudy days, it still made heat. On cold nights, I could close the door and window. If we had plants in there, we could leave the fan going, and we still had a net reduction in home heating. The dual layer plastic sheeting provided enough insulation with the 6" space between layers that it did not get too cold out there.
E Pluribus Condom