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 in. 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 sq. ft. coverage with rolls measuring 43 in. x 28 ft.
IIC (Impact Sound Transmission Test) rating is 68， STC (Sound Transmission Class) is 65 and Sound Transmission Loss Test is 20
70-026
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