Hacker Industries increased its UL listings for its line of floor underlayments to 82.

Hacker Industries increased its UL listings for its line of floor underlayments from 66 to 82. The line is sold under the brand names of FIRM-FILL Gypsum Concretes and GYP-SPAN Radiant.

The UL listings detail floor ceiling assemblies using a Hacker floor underlayment as an integral component to achieve a one-, two-, three- or four-hour fire rating.