Sound proofing - Im no Expert but this seemed to work.

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dreib

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The space I ended up getting had a lot of potential BUT my biggest worry was 3 windows and a door that were on one side of the space. Pretty much all the materials I used were already in the basement of this place and what I didn't have I found just by asking around.

First, I put drywall on all the windows, I just cut it as the same size as the glass, then put some 1 inch Styrofoam that was laying around on top of the drywall , then framed around the window openings (inside) with 2x4's , then used some rigid yellow insulation I picked up from a demo job at work , it wasn't quite as rigid as 703 but it would stand up on its own. Then drywall over that . Oh and when I took the framework off from around the windows I used spray foam stuff. Outside I just used Styrofoam on the windows, then 1/2 osb on top of that , then insulation , then 1/2 plywood that covered the whole window opening .

The place originally had a oak wood floor but someone put plastic tiles over it and some years later they put carpet over that ! I got the carpet up but there was no way I was going to invest the time and money to peel up those tiles , so now the floor is 1/2 osb and plywood.

Now I know some expert may read this and say this or that should have been done differently etc etc, blah blah blah , but all I know is that I can literally hear a pin drop in this room. I wasn't trying completely sound proof the place but rather just keep normal outside noises from getting in, wind , cars driving by, birds chirping , stuff like that . I was surprised by the results . I thought I would make this post to let people now that if you look around , you can find materials for free or next to nothing that will suffice for a "Home studio or Project studio .

I have already started on the inside treatments , bass traps , and am looking forward to hearing what the room will sound like in recordings.
 
You didn't mention what the rest of the wall construction is. :) Wouldn't it have been better (but not neccessarily easier) to remove the windows completely?
But you are right, for most 'home recording' purposes "sound proofing" is really to keep the regular-volume outside noises from getting in. When the ricer or Harley with no muffler goes by, not much you can do except for retracking.
 
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The wall is 2x4 inside to outside construction is paneling then insulation then sheeting then siding I believe . The windows were 4 ft x 4 ft double pane so I didn't feel like messing with removing them .

Yea I can still here Harleys and since I am literally right next to train tracks , train horns, but luckily both don't seem to pass very often , of course I haven't hit record yet!
 
I need to make 10 posts so I can upload a link. Bare with me.
 
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