New Shed - need help figuring out how to design interior

Bananaleaf

Hi all

We are getting a steel shed out the back garden. We intend on it having a "home office" interior. (steel walls and concrete floor covered)

It comes with 25mm Kingspan insulation.

It will be 3mx3m and will have a window and door.


The following is what we will have to do with it:

1. Soundproofing (for playing drums - 25mm Kingspan included but the gap in wall allows for 40mm total. Kingspan is expensive - do we need to just take the hit on this or is there a cheaper option? We would like to do it cheap but more than that we want to do it right, so if it has to be Kingspan then so be it)
2. Timber (maybe) boards over the insulation/soundproofing for the walls
3. Lay a floor

We will be getting an electrician to hook up the power - we aren't going to take any stupid chances, but we do need to keep costs down, so were hoping that the 3 above items would be the easiest (and hopefully the least lethal) to try ourselves.

I don't have the first clue about how to do these things so I would be delighted if anyone was willing to throw some nuggets of wisdom my way.


Many thanks
Bananaleaf

Lumen

You're off to a bad start with a steel shed, because there's no mass in the walls.

Quoting from TGD E:

3.6.1.1 The resistance to airborne sound
depends on the mass per unit area of the
leaves, the isolation of the frames, and the
absorption in the cavity between the timber
frames.

https://www.housing.gov.ie/sites/default/files/migrated-files/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad%2C39956%2Cen.pdf

Have a read of section 3.6, timber frame.

I don't think it's possible to do this on the cheap, but I'd start with a block on flat build as there's more mass in the walls.

Lose the window, or get the best you can afford, and think about how hard the roof will be to deal with. If you add mass to the roof you'll need it designed properly or your walls will spread.

This book might be a good start

Home Recording Studio: Build It Like the Pros https://www.amazon.co.uk/dp/143545717X/ref=cm_sw_r_cp_apa_i_yvUlCbMZNP347

Roadtoad

Don't mix up thermal insulation (eg closed cell foam) with sound insulation (eg long torturous routes) . Companies like Teil.ie have helped me.