Author Topic: is a suspended ceiling better than a drywall one?  (Read 3688 times)

BillD94

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is a suspended ceiling better than a drywall one?
« on: April 06, 2007, 06:50:21 PM »
     I live in a loft with 18' celilngs, with hardwood floors crossing large beams.  The noise from the floor above is too much, particularly foot noise.  We hate to lose the look of the beams, but must do something to stop the noise.
     There is plenty of room to put a completely separate ceiling a foot or so below the existing one.  Efforts by others to seal off the area between beams, using the thick vinyl material, does not stop the foot noise.
     We are torn between putting in a suspended ceiling with the most effecient tiles and putting in new rafters and sheetrock on the top and bottom.  While the suspended ceiling is the easiest to install, will there still be noise (even if some sort of insullation is put above it?  Also, is there evidence of how the two compare, as we would hate to go to much trouble and expense and still have a noise problem. 

johnbergstromslc

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Re: is a suspended ceiling better than a drywall one?
« Reply #1 on: April 10, 2007, 03:44:02 AM »
18' ceilings - cool!  Bet you never feel claustrophobia, huh?

Those suspended acoustical ceilings are only really designed to absorb the noise/echo in your space, not the noise transmitted through a wall or ceiling.  Since the brunt of the problem is structure-borne, the beams will still radiate that noise into your space.  Once the vibration gets into solid matter, there is little you can do to stop it, except provide a break in the connection with the vibrating material.     

A resiliently hung, double drywall ceiling (with insulated cavities) will definitely solve your problem.  If you decide to install recessed lighting, be sure to use 'airtight' cans.  The regular cans are flimsy and are full of holes for sound to leak out.

It's a shame you'll lose your beams, but you could have a carpenter fabricate and install some cosmetic built-up beams.   

   

samvasq

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Re: is a suspended ceiling better than a drywall one?
« Reply #2 on: May 10, 2007, 03:06:20 PM »
Hi John;

can you rate in DB reduction or estimated STC each option below , and what is  the ideal solution
1) hung ceiling with top to bottom air cavity (1 inch), 5/8 sheet rock, 1 inch cavity filled with R11 or R19 fiber insulation, 2nd 5/8 sheet rock ? total hight about 3.5 inch

2) hung ceiling no air cavity,  5/8 sheet rock, 1 inch cavity filled with R11 or R19 fiber insulation, 2nd 5/8 sheet rock ? total hight about 2.5 inch


3) hung ceiling no air cavity, 5/8 sheet rock, 1 inch air cavity , 2nd 5/8 sheet rock ? total hight about 2.5 inch

4) hung ceiling no air cavity, 5/8 sheet rock, green glue application , 2nd 5/8 sheet rock ? total hight about 1.5 inch

5)  hung ceiling air cavity 1 inch, 5/8 sheet rock, green glue application , 2nd 5/8 sheet rock ? total hight about 2.5 inch

6) any other variety of those?

thanks for all the help. any specific acoustic clips you recommend for the resilient channel?

is EPS polysterene a good acoustic insulator or better to repolace it with air or R11/R19? what is better r1 or r19?






 

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