I didn't see anything on the greenhouse forum to really answer this...
Does the greenhouse roof HAVE to be clear/opaque??
I've priced those polycarbonate sheets/panels and Oh My God. I've got all the materials to build except something for the roof IF it has to be clear.
I'll be building a lean-to type structure attached to the south wall of my house. I'll probably make it six feet deep and sixteen feet long. I've got cinder blocks to build the foundation and all the old windows I need. I will have to buy 2x4's but that is a small expense compared to those clear panels.
I DO have about 10 sheets of corrugated sheet metal. Could I use that for the roof?