Converting garage into soundproof studio

[GravyTrain]

My rough, although possibly optimistic, plan:

Hi, I'm currently planning to convert my garage into a livable music
studio and would appreciate some tips. I'm hoping to do most of the
work myself, though I will first be getting any leaks in the roof
professionally fixed and broken tiles replaced. I have been quoted
£200 for the replacing of 10-20 tiles, and £300 for the building of
an insulated ceiling. I think I'll just go for the tile replacement.

Firstly, the priority is getting this building as soundproof as possible,
so, apart from standard loft insulation, is there anything I should add
to the roof and walls? I'm also assuming I should use a different type
of insulation for the walls, I drew up a quick plan for the wall
insulation (below), am I heading in the right direction?


There is also a gap between the wall and ceiling, I'm guessing this
is essential for ventilation, but will this cause issues for soundproofing,
and how will I solve them?


Also, What should be added between the rafters to
maximise sound insulation? And how do I go about building the ceiling,
will plasterboard (with insulation resting on top of it) be sufficient?

Finally, the floor is just plan old concrete, will it need to be raised
or treated in any way? And is that essential?

Thanks for reading, I'm working on a tight(ish) budget, hence the DIYing.

Tom

 

[noseall]

Tight budget and genuine sound proofing do not bode well together.

You are looking at a bare minimum of £3-5k for the simplest of (habitable spec') garage conversions with an additional £2k added on for any specialist materials involved with sound suppressing.

Adding mass (dense, weighty stuff) to any surfaces will serve you best as will adding muffling materials such as glass-wool etc to any hollow spaces.

Ventilation gaps or any air leakage will exacerbate any sound leakage problems.