The Roberts Black Jack 2-in-1 Underlayment is designed for use under floated laminate, bamboo and engineered wood floors and is ideal for many types of subflooring. Black Jack is engineered as a superior grade, 2-in-1 underlayment with a 2.5 mm thick foam layer that provides optimal cushioning and sound absorption, as well as a closed cell foam design that offers excellent moisture vapor resistance. The underlayment also features a 4" overlap and adhesive strip to seal out moisture and join multiple rolls.

• For use under floated laminate, bamboo and engineered wood floors
• Dense, closed cell structure offers moisture, mold and mildew resistance
• Ideal for use over radiant heated floors
• Features cushioning and reduction in sound transference
• Easy installation with plastic overlap and adhesive strip
• 100 sqft coverage with rolls measuring 43" x 28 ft
• IIC (Impact Sound Transmission Test) rating is 70, STC (Sound Transmission Loss Test) is 66 and Delta Rating is 21