How is rubber for soundproofing? May I use it against or glued to sheetrock to soundproof a wall?

Our Eco-Flec Rolls were designed as underlayment but are durable enough to be used as flooring for high impact workouts. These rubber rolls are great as a soundproofing agent under existing floors or on walls, as well. You can glue these rolls to sheetrock with the use of a polyurethane or wood glue.