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I have an unfinished 272 sqft room in my basement that I'd like to convert into a dedicated theater room. The room above me is the kitchen. The room suffers substantial airborne and impact noise. "Dusting off" The home Theater Book and looking online about sound proofing your ceiling I saw it was suggested to glue two layers of drywall directly to the ceiling between the joists. However I have a lot of exposed nails and glue globs at the ceiling. As the title suggests my joists are I-beam shaped. I have two qustions.
1. If I left something like a 1/4" gap between the drywall and joists (due to all the glue and nails that are going to be a pain to try and clean up) would the drywall still be beneficial? I got the impression that just the extra weight is beneficial. In the attached image Option A is the drywall green glued to the ceiling. Note:The image doesn't represent the gap I'm suggesting. All in all this would create 1/2 of gap for each strip. The joists are 16" on center.
2. The nature of the I-Beam shape gives me a 5/8" over hang. I was wondering if could avoid a lot of the pain of the nails and glue mess by attaching the first layer of the drywall directly to this beam. This is option B in the attached image. This would also give me a 1 1/2" air gap between the floor and this room.
Thanks for the help.
Nathaniel
1. If I left something like a 1/4" gap between the drywall and joists (due to all the glue and nails that are going to be a pain to try and clean up) would the drywall still be beneficial? I got the impression that just the extra weight is beneficial. In the attached image Option A is the drywall green glued to the ceiling. Note:The image doesn't represent the gap I'm suggesting. All in all this would create 1/2 of gap for each strip. The joists are 16" on center.
2. The nature of the I-Beam shape gives me a 5/8" over hang. I was wondering if could avoid a lot of the pain of the nails and glue mess by attaching the first layer of the drywall directly to this beam. This is option B in the attached image. This would also give me a 1 1/2" air gap between the floor and this room.
Thanks for the help.
Nathaniel
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