Tubolit® W LS pipe insulation is a white, flexible Polyethylene (PE) thermal insulation with a solid, outer PE coating that makes it UV retardant and abrasion resistant. Tubolit W LS has a closed cell structure that makes it an excellent water and water vapor retarder. Since it has a 25/50 rating according to ASTM E84, Tubolit W LS can be installed anywhere in a home or building including plenum spaces.
Tubolit W LS can be slit easily with a sharp, non-serrated knife and installed over a pipe. Longitudinal and butt joints should be sealed properly with Armaflex 520 adhesive.