Closed-cell polyethylene foam semi-slit pipe insulation is used in residential and light commercial plumbing projects to prevent heat loss and protect pipes from freezing. It is available in wall thicknesses of 3/8 to 1 in sizes ranging from 3/8 in up to 4 in IPS ID. Low thermal conductivity and very low water vapor transmission rate. This low density product demonstrates excellent thermal, physical and chemical resistant properties and has a broad service temperature range between -297 and 200 deg F. It can be installed in residential and light commercial plumbing projects. It is acceptable for use with heat tracing or heat tape.