Polyguard's Insulrap™ 50 is a 50-MIL thick peel 'n stick vapor retarder membrane for cold piping systems.
Insulrap 50 is to be designed to be installed as a vapor retarder over insulation for direct burial applications. I-50 is designed for "low debris" backfill operations where clean fill or sand backfill is intended over the piping system. For "dirty backfill" applications, use either Insulrap 75, Insulrap 125, or install Polyguard's Insulshield™ puncture resistant jacket over the I-50 membrane before interring.
I-50 is not UV stable and cannot be exposed to UV light for an extended period of time.
I-50 is constructed using a 8-MIL polyester scrim reinforced polyethylene membrane laminated to 24-MILs of rubberized bitumen compound. The polyester scrim strengthens the membrane and provides improved directional strength to the product. This is especially helpful to fabricators who pre-apply the product to fabricated foam insulations, significantly lessening the "hour glass" stretching with non-reinforced membranes. I-50 has the properties necessary to tolerate up to 300% elongation before break, so it will expand and contract with the piping system.
The upper service limit of I-50 is an insulation surface temperature of 160°F, if you are planning to use a moisture barrier on an elevated temperature system, consider Polyguard's Insulrap 'No Torch' 125 which can tolerate up to a 200°F surface temperature.
For more detailed information, please see the technical data sheet for Insulrap 50.
