White PVC sheet?

I need to make a flowering room for my plants but have no idea where to get the big rolls of white pvc sheet it keeps coming up with electrical tape when i google it :/ any ideas? or am i searching for the wrong thing?

You mean like a roll of white plastic?

Google Panda Film. You can use cheap space blankets from the camping stores. Today I just purchased four blankets for $3 each. They are just mylar reflective sheets 56in X 84in.

Just so you know, PVC does not come in rolls or sheets. What you're thinking of is just plain old plastic, which does come in rolls and like the guy above me said, just search for Panda Film and you'll find what you're looking for.

Also, any local indoor grow shop should have something similar.