• Liz
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    2 days ago

    Noise separation is pretty easy to design into a building. Air separation is possible but would require design that no one bothers with, as far as I know.

    • capital@lemmy.world
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      2 days ago

      Noise separation is pretty easy to design into a building.

      I wonder why more don’t do it then.

      I would be very interested (and I assume I’m not the only one) in a condo + association which advertises strong noise controls. HOA’s always seem to concentrate on the wrong things IMO.

      • Liz
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        2 days ago

        It’s slightly more expensive, and most developers are trying to build the cheapest thing they can sell. A good number of places have put in noise separation into their building code though, so depending on where you live any new place will be dead quiet.

        In a wood-frame building, for example, you increase the thickness of the unit-to-unit walls by a few inches and leave a small air-gap between two layers of insulation. The hard-soft-air-soft-hard boundary makes for a very difficult path for sound to travel through. You have to purpose-build the walls if you want maximum noise isolation, because the studs have to be staggered so they don’t bridge the gap and transmit the sound through your defenses.