I get the sealed space concept, but I don't believe I could afford the fans to get the negative pressure in a room that is 9'x15' at 8' height.
I've been considering building a 5x5 space, but then latewood mentioned he likes being in an open room. Not sure if anyone has noticed, but I prefer the cheapest way possible since I don't sell it. I can't make any money back, so I try to spend as little as possible.
Your information is greatly appreciated and I'll be getting with you when I'm able to get a properly sealed space.
I'm thinking of trying to build a dedicated space hidden away when I remodel the back of the house this year. Turning 2br/1ba into 1/1. Larger bathroom for us and smaller bedroom to discourage long stays from family. Lol