Interior Walls-Mineral Wool: R-value marked or Sound Attenuation Fire Blanket?
Is there a difference? I was looking at Rockwool R-15 ComfortBatt or Owens Corning Thermafiber R-15 UltraBatt….but then I notice the non-R-“rated” mineral wool called Thermafiber SAFB (2.5 pcf). Looks like essentially the same product, right?
Since its for interior walls and primarily for reducing sound transmission, will it matter which I choose? Won’t the SAFB still have R-Value qualities even if it isn’t “listed” as such? And does it even matter? Is there a difference in the R-value density versus the SAFB density I see listed on the spec sheet? Any other brands/products that would perform the same function for interior walls at lower costs?
This is wood framed. 2×6 exterior 16″ O.C. studs with 1″ XPS CI on exterior. Planning on R-23 mineral wool batts on those exterior walls but want interior walls addressed as well. This structure will have multiple mini-split units providing heating/cooling needs. I’m getting ready to get quotes on different types of insultion. I’ll be doing the install myself and love the ease of the friction fit. Thanks in advance.
Central Oklahoma. CZ3
GBA Detail Library
A collection of one thousand construction details organized by climate and house part