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Rockwool (as a substitution for fiberglass or cellulose insulation) by itself shouldn't do all that much. Are the internal walls 2x4 or 2x6 construction? Do you
by Anechoic 11y ago
Rockwool (as a substitution for fiberglass or cellulose insulation) by itself shouldn't do all that much. Are the internal walls 2x4 or 2x6 construction? Do you know the thickness of the drywall panels?
- Domenic_S 11y agoAlmost certainly it's the solid door doing most of the work. Doors and windows are absolutely terrible at keeping noise out. I had new windows recently installed, laminated dual-pane, real beasts. In bedrooms that face the street, almost no noise, they're amazing. But in the front room where the front door is? The door might as well be open.
- copperx 11y ago2x4s. I can't remember the specs, but I recall doing research and it was a pretty dense rockwool. I did ask for the drywall panels to be thicker than normal, but I don't recall how much. I found out about staggered 2x4s (http://images.meredith.com/diy/images/2008/12/p_SCTC_100_04.jpg http://images.meredith.com/diy/images/2008/12/p_SCTC_100_04....) too late.
- deleted 11y ago[deleted]
- Anechoic 11y agoI have to agree with Domenic_S, it's probably the solid core doors (I'm guess the jambs and sill are well-sealed also) that's providing most of the benefit moreso than the rockwool. Staggered studs are an option, resilient channel also works well, provided that it's installed correctly.
- copperx 11y agoEdit: The Rockwool didn't substitute fiberglass -- inner walls are normally not insulated, they're just made of 2x4s with sheetrock on top. I could probably have saved some money by just using regular fiberglass in all inner walls.