your best bet is wet sprayed in place cellulose. More "R" per inch than
fiberglass, AND it stops air infiltration. As a side benefit, it is very
fire retardant and also includes borax which is a very good insecticide.
check out the info at www.centralfiber.com
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.