I built my veg room out of polypro and I love it. It wipes down easily and never have a mold or mildew issue. It’s sturdier than panda film. It’s a form of inso board and only costs 10$ for a 4x8 sheet. So for 70$ And some gorilla tape u get 4 walls and a ceiling and have a 4x8 room.
I was told by a few people u can’t build a room out of it but so far I have found them to b dead wrong.
Happy growing and welcome to the forum.