New Grow Room

So my set up is right now is my closet purple papaya, god bud, uw med strain. there at about 2 months so im in need of more room, so i am movine them into my laundry room. i tried doing a full room set up in my office with a l000w hps, didnt turn out to well super hot and no moisture do to the carpet because my window was fully open and still 98f or more. Anyway my laundry room is big enough and tile, with window about 2.5 feet so i can set up import and export. but my one down fall that i need help with is i have stairs that go down to my garage, so i need to construct a wall and something that can be basicly perminate but fiance wants something that we can remove incase of emergency. i am a mmj patient so i dont care about smell but it would be nice for it to seal some what.

Dude you can pick up some small wood at the hardware store like 2"x2"x8'.

Build a frame that snugly fits and use black plastic tarp on one side and mylar or white plastic on the other side and use a staple gun to secure it.

Really i build my flowering room pretty much out of that stuff. And in case of emergency you could just rip the plastic and go threw. or break the frame and run threw would be easy enough with such small wood but it will hold a frame for sure!!