Mineral Wool R-value by temperature
Does anyone know if there is any information available that shows the performance of mineral/rock wool by temperature?
Buildingscience.com has this for polyiso:
I am wondering if there is something similar for mineral wool.
A few other links I have found –
John Straube did an advertisement for roxul where he said that mineral wool performs better the colder it gets. I am wondering if there is any difference between fiberglass and mineral wool as temperature decreases.
Intuitively I would think not. Extrapolating the fiberglass chart, if an R-13 batt performs as R-13 @ 60F, and R-14 @ 10F, an R-23 batt would perform as roughly R-25 at 10F.
Thanks for any information.