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pslate: Definitely not going to be our last home, we're hoping to be here less then 5 more years. I don't want to build a time bomb for the next owner, of course, but...Does IIC just deal with sound due to impact? I've seen STC, but not IIC. I hear you regarding workmanship possibly killing the effort, wish my wife did as well. Bryan: what are some methods of adding mass to the subfloor above? It is constructed of 2x10 lumber run at 45 degrees WRT the joists. Oak floor attached to it, toenailed through the tongues of the tongue and groove sides. I'd thought about adding a second layer of drywall (or homasote), but have concerns about that much weight hanging from the furring strips.To give a sense of scale to the budget, my query is dealing with an increase from $150 for fiberglass insulation to about $300 for rockwool.
in the process of remodeling the basement in our duplex.The basement ceiling is unfinished currently, with furring strips attached to the bottoms of the floor joists in a perpendicular orientation. The flooring above is 1" oak.My plan is to drywall the ceiling with one thickness of 1/2" drywall, glued and screwed to the furring strips. I also plan to fill the cavities between the joists with insulation to assist in blocking sound transmission through the floor
A solid core wood door on the stairwell would be a better investment IMO.
If the basement is open, that's going to be a huge source of noise transfer and likely, standard insulation, slats, and regular drywall is your best reasonable option. I wouldn't bother with a ton more if the rest is open and the sound is just going to to right up the stairs. A solid core wood door on the stairwell would be a better investment IMO.Bryan
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