I have already asked a couple questions about this, and just need to know 2 more things. I know plastic wrap will work, but this is plastic sheet, and is much better,stronger and will still let light in correct? And for a greenhouse, does there need to be a few holes in the walls and roof to let air through, or should it be basically sealed completely? Thanks for any help!
don't poke or cut hole in plastic, it will make a weak point that will tear. heavy plastic sheeting tears. you do need to vent the house though frame some openings at one peak near top and corresponding hole near bottom on other end. cover both openings with screen or hardware cloth to kep critters out.
Plastic sheets does really works for greenhouse and helps to grow plants. This is the cheap and unique way to build greenhouse with help of plastic wrap.
My answet: Listen to Scott Kelso He is right on
