What is the R-value of perlite or vermiculite?
I think that an average of 2.8/inch for perlite and 2.3/inch for vermiculite would be appropriate, given some on-line research that I have done. Q: I am interested in using rice hulls in bags as an alternative to fiberglass in the earthship type home that I am building. I need some direction on how to proceed. See my house at www.flickr.com/photos/whatisupwiththestanleys A: I’ve never tried using rice hulls in bags myself, but I understand that they make excellent insulation. First you need to find a source for the rice hulls, which should be quite inexpensive if you can find them locally enough. I’ve heard that there are rice processing plants in Texas and Florida, and perhaps some other southern states. I would not recommend using bags filled with rice hulls in bermed situations, where the bags can’t breathe well… C: I live in Arkansas which happens to be the largest producer of rice in the United States. I can get a truck load brought to my land for $1200 which is about a 2 – 3K s
