I have a full dormer on my house that I added recently. Downstairs I had ripped down the sheetrock on some of the ceilings to make way for pipes, wires, plumbing , what have you. Before I resheetrock the ceilings should I insulate the floor joist bays? I know it will help for sound but being as there is heated space between the 2 floors I didnt know if it would just be a waste of time and money. I do plan to add insulation toward the outside (near the rim joist). What do you all think?
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craigbooey,
You'll achieve sound deadening as you pointed out but lose heat transferance.. Is this in an area where it will be occupied full time? Or might you consider shutting off heat sometime in the future? (say when the kids grow up)?
no it will always be occupied, the ceilings I have to sheetrock are below my new master bathroom.
If heat is distributed properly, stopping heat transfer shouldn't be an issue. If you want to lessen the noise transfer, it's a good ideal to stick some insulation in there. Mind you, it won't stop noise transfer, but there will be a little less.--------------------------------------------------------
Cheap Tools at MyToolbox.netSee some of my work at TedsCarpentry.com
I did it between the two floors of my house when I built it. I have separate HVAC units for top and bottom floors so transer wasn't an issue but I did want sound dampening.
And I think it worked out well as when folks are upstairs and not near the stairway opening you can't hear at all. Also "footsteps in shoes" noise is almost not existant.
I think I used R22 or 25 batts in the 16" floor trusses.
It might have cost me $250-300 in insulation but I figured you could never go back and do it later...Well, you could but..... :)
Mike