Tape Laminate Underlay
The underlayment has a plastic strip on one end that goes along the wall and up the wall that will be covered by the baseboard and the other end has a strip of adhesive tape.
Tape laminate underlay. The roberts underlayment seam tape is used for joining underlayment seams under floating floors and for repairing rips during underlayment installation. Moisture resistant to better protect flooring from moisture damage. The answer is no. Use to tape seam on underlayment.
As you unroll each roll the clear plastic end lies on top of the end with adhesive strip and two white pieces of foam will be butted up against each other. Provides a moisture proof bond. This versatile tape can also be used for carpet padding seams general repairs sealing boxes and much more. Some manufacturers sell specialized tape for underlayment but there is no extra benefit.