This is my take at a passive greenhouse, sourced used, local materials and ended up designing the dimensions @ what I was lucky to find for free: door and windows, steel, wood and sandwich panels, only paid for the construction mesh (cattle panels style-50€) and the 200mm foil with the fixings was about 400€.
Total was under 500€ for 63sqm.
It stays 2-3° warmer than outside during the night and so far it hasn't froze inside but it only got as low as -5-7°c and not for more than a few nights in a row.
by Consistent-Bid-8176
1 Comment
The foil is 200 microns not mm, ofc, sorry