Bharat P. Baliga-Savel wrote:
folks:

i just went thro' few bids about insulating my walls. All of them were
competitive, except one: while all of them were putting cellulose the
exception was putting fibreglass and hence $250 over the cellulose.

according to him, cellulose settles over time, while fibreglass does
not. this sounds like a very basic problem with cellulose. is this true?
also, cellulose is "susceptible to moisture".. not sure what that means.

any comments about these two?

thanx
=b

Depends on how it is put in. Fiberglass in batts doesn't sag.
Fiberglass blown in does. Flat on the ceiling, 15 inches of blown in
fiber glass will compress to about 1/2inch when stepped on and will
stay that way. a 6 inch batt will rise back to 5-1/2 inches almost
immediately. Don't know how you would put stuff in your walls
without blowing it in. The blown in dry fiberglass will settle, so
will blown in dry cellulose.