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| 2nd post- 1st in energy & insulating didn’t get any responses.
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| I’m working on remodeling our kitchen, dining and living rooms. We took out the old, damaged plaster and lath that was the ceiling and are going to replace with new sheetrock. Will add recessed lights in kitchen & dining rms. Ceiling height is 9′ in all rooms. Kitchen is about 280 s/f, dining is 250, and living rm is 350. House is located in Vermont. We are also having a new FHA heating system put in with 2 zones; 1 upstairs, 1 down. House is 3000 S/F total, 1500 up/down. The kids’ bedrooms are above the dining & living rm on sec fl. My plan for the ceiling was to install R19 f/g batts and then go over with sound dampening sheetrock for the obvious reasons- to add a buffer for noise between floors and slow the heat loss from the 1st fl. Recently I read that f/g batts don’t do much to help control noise between floors and someone suggested that 2 sheets of sheetrock would do a better job than the insulation & 1 sheet. So now I’m questioning my original plan. Would moving to R30 make a noticeable difference in noise control from the R19 in this situation? The joists are timber 3×8″s. Insulation AND 2 sheets of rock? Is it even worth spending the money on the f/g batts? Anyone out there got some advice on this kind of situation and how to best proceed? Thanks for any suggestions. | |||
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I think the fiberglass will help with noise transmission. I wouldn't use it for insulating purposes though, there is really no benefit to slowing the heat to the next story since you'll lose it out your windows, doors and walls.
You could use resilient channel with 5/8" sheetrock to help your noise problem, or possibly double up 1/2" layers of drywall, glued to each other, and screwed to the resilient channel.there're a lot of creative solutions to noise problems. What's the best for you? Hard to say but looks like it's a pretty important problem.
Edited 4/10/2002 3:11:19 PM ET by Mad Dog
You don't say what the span or spacing of the joist might be but if the overall size of the house and my familiarity of New England Homes is an indication, they are at least 16"OC and span about fourteen feet. If that is so, you would be well advised not to add the weight of a double layer of sheetrock. The value of the fibreglas is nuetral. Can't hurt but may not do all that much for you. There is some fibreglas marketed as soundproofing product which is a little denser than insulating fibreglas so it would be worth checking out. I think it is by JM. If the ceiling has strapping in the framing, keep it. If not, add it. That helps with interrupting the transmittion of sound waves through the solids of the joists to the ceiling drum surface. 5/8" rock will help too.
Armstrong has a plank style ceiling board product that is cellulose and absorbs some sound, if the look will fit any of those rooms.