Do homes have to be wrapped before vinyl is put up?

My house is a modular home,on a permanent foundation, if that matters, and I noticed that under the vinyl, it is just plywood. I thought homes had to be wrapped with that plastic material, to keep out moisture and pests and wind. Also I noticed a lot of those little nails with the green plastic things on them are all over the roof, Aren’t those for the tarpaper?

Do homes have to be wrapped before vinyl is put up? Read More »