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Starting soon on my upstairs home theater

post #1 of 3
9/17/09 at 12:47am
Thread Starter 
Hi all, i'm about to be moving into a new house being build and i'm going to be doing an upstairs home theater. The room is 17x20 with slanted walls on the side and the back wall that begin there slant at 6 foot. That room and a storage room next to it are the only 2 rooms upstairs. My theater room is above the 2 car garage and the kitchen area. We are going to live in a sub division so we have neighbors all around the house except the back which is a corn field. The bedrooms are located under the storage room.

1. Should I put a drywall partition on one side of the room to make it 15x20, or leave it at 17x20 since it has slanted walls?

2. Should i Soundproof the room? The builder is alrdy going to do the floor but should i do the walls and the ceiling to?
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post #2 of 3
9/17/09 at 5:18am
1.  I've seen dozens of upstairs theaters with the upper part of the wall slanted.  I have no hard data but I would think that it would help with the sound since the walls aren't parallel.
2.  That depends on you and your budget.  If you are going to spend the money, then you should spend it on double drywall.  Better yet, double QuietRock.  Add RISC clips.  Resiliant Channel.  Green Glue.

What are your goals of the soundproofing?  Keeping noise out of the room or containing the sound in the room?  The first is easy and cheaper.  The latter is more expensive and varies by frequency.  Containing the highs is as simple as adding insulation.  The lower you go in the frequency range, the more items I listed above will have to be implemented.  Extremely low bass can't be contained.  I can excite the concrete foundation of my house and my wife can feel it vibrate in the master bath.  That is the other corner of the house.  It is a compromise so you need to find where your goals and budget meet.

-Robert
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post #3 of 3
9/30/09 at 6:28pm
The best tip I had when completing my HT was to install an insulated exterior door with a threshold on my inside door. This prevents sound from escaping underneath and around the typically cheap balsa wood interior doors that most builders use!
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