vapor barrier 6 mm, or just a tarp and some staples. ya i just talked with my dad and he said we are going use a tarp just because that stuff is very weak, but i think i can convince him.
( this isn't my coop i was just looking for plans)
look on the "plastic wrapped runs???" thread
Great! Thank you guys for the info. When do you normally do it if you live in a cold climate? October/November?