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I want to convert my room into sound proof room, as I watch movie on my PC. I want to have a theater like effect so that I can watch at high volume.

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After you price acoustic foam resist the temptation to use inexpensive foam of the same pattern.If you are going to cover the walls and ceiling make sure it is treated with a fire retardent.Google station night club fire if you think it doesnot matter. –  mikes Mar 18 '12 at 23:06

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For soundproofing rooms to act as recording studios Acoustic Foam is generally used. You can get boards built incorporating foam into reasonably inoffensive panels, or you could just use it in its raw form if your main aim is just soundproofing. Rugs and curtains also help cut down sound.

You can do similar things with the floor and ceiling.

Of course doing this will make your room very dry acoustically, so unless you have the home cinema in use it will not be as nice a room for normal purposes - sounds will be deadened etc.

Finally - the usual caveat: watching at high volume is never recommended :-)

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My high volume is not loud but only that sound is clear :) Thanks for your suggestion , I ll check price for that foam in my area –  livinggourmand Mar 18 '12 at 9:16

It depends on how much work you want to do. Roxul makes a product called "safe and sound" that is a sound deadener and placed in the wall cavities behind the drywall.

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If you're not renting (ie, you own your room or whoever you're living with doesn't mind if you make modifications to the structure), consider the following:

  • Type X drywall: While mainly designed for fire rating, it's very heavy, very dense, and helps in blocking sound.
  • QuietRock: Designed for soundproofing, but very expensive. Consists of a viscoelastic polymer sandwiched between two layers of gypsum (or gypsum and cement board). There are different grades of QuietRock.
  • RSI clips: Resilient sound insulation clips help decouple your drywall from the studs. Genie Clips are very popular. You will need metal furring channels (aka hat channels) for the installation.
  • Green Glue: A soundproofing compound that basically lets you make your own homegrown version of QuietRock. Hang a layer of drywall, use a 28-oz caulking gun to dispense the GG onto the back of the second layer, and then put the second layer up over the first. Stagger the sheets. Green Glue's website will give you instructions on application.
  • Acoustical putty pads: If you're super serious about soundproofing, apply these putty pads around the back of all your switch/outlet gang boxes. If you don't, all your soundproofing efforts will be in vain as sound will just travel through the hole in your soundproof wall and out the back of the gang box. QuietPutty is one such product, though there are more. See this question of mine where I show how I ended up soundproofing my outlets after the wall was installed.
  • Acoustical caulk: Use this in the space between your door frame and the studs. You may soundproof your walls, but what's the point when sound will just sneak through that gap?
  • I'll also add that your soundproofing endeavors will be futile if you don't actually soundproof the door itself. Hollow core doors are useless. Get a solid core door with a nice, dense frame. You will also need some heavy duty hardware like cam hinges, perimeter seals, and door sweeps. If you're crazy into soundproofing, you can even try making your own door.
  • Roxul SAFE'n'Sound: Again, if you're serious and want to really soundproof your room and you plan on removing your drywall, replace all your regular insulation bats with Roxul.
  • Also, if you have someone below you or above you or you're over crawlspace or have an attic above you and there's someone in the next room, you would need to soundproof the ceiling and floor. Otherwise, if you're on a slab, you won't need to soundproof the floor. If you have no attic above you, your need to soundproof the ceiling is greatly reduced.

You can also combine many of those options. For example, you could go all out and soundproof a wall with Roxul insulation, RSI clips, and a double layer of type X dryall with Green Glue in between. I did that with my room and the results have been fantastic.

Edit: Well, I didn't realize this question was three years old. It showed up on the first page, so I answered!

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Insulation will help you in such a case. You can start by adding green glue to the existing wall surface and after that add extra dry wall over it. You can check with the doors also for soundproofing purpose. After all you will surely enjoy the movie.

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