Non Invasive acoustic treatment / sound dampening
I am in the process of converting a 9 x 6 storage closet in to a recording room. I believe the walls are plaster, and ceiling may be 1/2" drywall. I have been reading the forum, and pondering this for a while now. I'm renting in an old building, and there is a lot of molding I'd prefer not to remove, IG: chair rail, large baseboards, door casing, etc. So I believe dry walling the entire room would be a waste, since I don't want to DW under the molding. I purchased the wood soundboard, but chose not to install it due to fire hazards. My plan was the wood soundstop paneling installed over existing wall, and acoustic foam over it.
I'm looking for better acoustics, and a little more privacy for recording vocals, acoustic guitar, and probably electric. The noise level is not a major issue, but I would love to dampen it as much as possible with material that is easy to remove if I move out. As far as the doors, I will hang moving blankets over them.
Has anyone used soundproof paint, acoustical wall paper, or any of these products? I'm trying to find materials that are economically priced as well. MLV seems expensive. Is there a material that would have a similar sound rating to drywall, that can be installed? I'm a contractor and I'm rarely home, so the last thing I want to do is rip my closet down to the studs on my day off, sure you know what I mean. I will probably add drywall to the ceiling though.
I thank you in advance for any assistance.