cheap isolation

[T_ear]

first of all, let me say hi, e tell you that i'm a complet newb in these matters, so don't be surprised if I make real dumb questions.

ok, so this is the deal:

I have an old small room made in bricks (a kind of brick that has no holes), and I would like to make it a rehersal room. The problem is that I don't want to be noisy to my neighbours, so I have to make the soundproof. I am kind of low on cash so I can't afford expensive materials.
I went to a store and I saw a roll of cork oak(I don't know if the name is right ) 4mm thick and 0,5mx8m at 16euros (about the same in dolars)
to cover the walls with that it would take a lot of rolls and I don't think 4mm of that would soundproof much...
Another thing that i'm thinking of, is wood (aglomerated) that is more cheap and has more surface, and is thicker...
wood is more reflective,but I could put some cardboard egg-boxes...

So what do you suggest for a cheap sound isolation?

[Guest]

Bom Dia T_ear,

From my own personal experience, I can assure you that adding a thin layer of cork to your existing brick walls will not be very effective in reducing the transmission of sound through the walls, especially if rehearsing or recording with low frequency emiting instruments such as drums and electric bass.

I suggest you read the related threads on the Studio Design and Studio Construction sub-sections of this forum. You can also do a forum search for "Walls" or "Wall Construction" or similiar.

After reading a bit you will most likely find that at minimum you may need to build a (floating?) room within a room, or perhaps a second high STC rated (interior) wall, and insulating the space between the walls with either mineral wool or acoustic fiberglass, with stud placements and specs as per sites such as this one or the SAE institute.

May I suggest that you download a free trial version of SmartDraw, and draw an accurate floorplan of the space you have (include exact wall/ceiling/door measurements and a good explanation of the materials used for your existing floor, ceiling, and walls).

If you then re-post your question on the Studio Design forum and include the info above and the floorplan, an acoustics expert or two may respond with recommendations for specific treatments.

Ron
Montreal