Bonded Logic. Ultra Touch cotton friction-fit batt insulation can be used for 16- and 24-inch spacing. The product is made with 85% post-industrial recycled content. The line includes an R-30 batt that fits into 2×6 walls or joist cavities. Cotton insulation offers acoustic properties 36% higher than fiberglass, says the company, only slightly less than mineral wool. 480.812.9114. www.bondedlogic.com.