Shaw SLSSU silent step ultra is 3 in 1 underlayment for laminate.  This underlayment can be used on concrete since it has superior mositure resistance.  In addition to this, it has superior sound absorption.  This easy to install underlayment is highly durable and stable.  Each roll cover 100 SF of area.

Product Details: 

• Name : SLSSU Silent Step Ultra Underlayment
• Made For: Laminate Flooring
• Size: 40" x 360" (100 SF roll)
• Pieces Per Box: 10
• Made in USA