Does anyone have a source for OC's claim that glass fiber is better than mineral fiber for filling walls?• Generally, at low frequencies, the increase in the
transmission loss of a partition obtained by adding a
sound absorptive material inside its cavity is equivalent
regardless of the material used. Above 250 Hz, mineral
fiber and blown cellulose give the best results; mineral
fiber insulation provides slightly better transmission
losses than glass fiber, especially around the critical
frequency. Also, in the case of glass fiber, a greater
transmission loss can be achieved by using denser batts.
OC Claims
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OC Claims
I have seen in Owens-Corning advertisements claims that glass fiber is better than mineral wool form NRC tests. The only comparison I have seen is in the CMHC document 02-108 where it is written:
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No, but I question the statement "Also, in the case of glass fiber, a greater
transmission loss can be achieved by using denser batts" - USG have a page I'm sure you've seen -
http://www.usg.com/Design_Solutions/2_3 ... onperf.asp
This is the base research that led to their SAFB's being manufactured at 2.5 PCF... Steve
transmission loss can be achieved by using denser batts" - USG have a page I'm sure you've seen -
http://www.usg.com/Design_Solutions/2_3 ... onperf.asp
This is the base research that led to their SAFB's being manufactured at 2.5 PCF... Steve
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- Location: Hanilton, Ontario, Canada
Iy is interesting that you referred to that document. I was reading it (again!) last night. I am not certain, but I think that statement ties in with that the liberglass used in the study was all lighter than 2lb/ft^3. The meaning being that fiberglass would benefit from being denser that what was tested, or other words, that the general trend is material composition independent.No, but I question the statement "Also, in the case of glass fiber, a greater transmission loss can be achieved by using denser batts" - USG have a page I'm sure you've seen
Of course this is only an educated guess.
Andre