The materials you're looking for are now sold at Sound Seal®

Industrial Noise Control (INC) is now a division of Sound Seal – a leading manufacturer of acoustical and noise control products serving the industrial, architectural, commercial & construction industries. Although INC will continue to offer high-performing noise control products and custom solutions, some materials are now available through Sound Seal. These materials include:

As a leading manufacturer in the industry, Sound Seal offers market and application specific solutions to the soundproofing industry and has been committed to controlling noise in every environment since 1978. With over 37 years of noise expertise, Sound Seal can offer the technical support and know how to solve any noise problem. Whether it be industrial noise control, acoustic fabric panels, acoustic floor underlayments or acoustic wood walls and ceilings, Sound Seal’s broad portfolio of brands provide a solution for all noise control market needs.