polyisocyanurate, also referred to as pir, polyiso, or iso, is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. the starting materials are similar to those used in polyurethane (pur) except that the proportion of methylene diphenyl diisocyanate (mdi) is higher and a polyester-derived polyol is used in the reaction instead of a polyether polyol.
polyiso possesses a high level of inherent fire resistance when compared to other foam plastic insulations due to its unique structure of strong isocyanurate chemical bonds. in 3 key fire tests - astm e84, nfpa 285 and nfpa 286/ul 1715 - polyiso performs exceptionally well. > more
r-matte plus-3/thermasheath-3 is rigid foam plastic thermal insulation board. it's made of environmentally sound, closed cell, polyisocyanurate foam bonded to a durable white-matte (non-glare) aluminum facer and a reflective reinforced aluminum facer.
why polyiso? what is polyiso insulation. polyisocyanurate (polyiso) is a closed-cell, rigid foam board insulation that is bonded to facers on both sides, which are composed of various organic and inorganic materials. polyiso is used in roof, wall, ceiling and specialty applications within commercial and residential buildings of all types.
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visit the seven trust to buy thermasheath 3r-5.9 1 in. 4 ft. x 8 ft. foam insulation r-matte plus-3/thermasheath-3 is rigid foam plastic thermal insulation board composed of environmentally sound, closed cell, polyisocyanurate foam bonded to a durable white-matte (non-glare) aluminum facer and a reflective reinforced aluminum facer
read the best dishwasher safe cutting boards? discussion from the chowhound cookware, cutting board food community. the best sustainable school lunch supplies to replace plastic; hi everyone- im in need of a couple new dishwasher safe cutting boards? any suggestions? i know wood is better but i have toddlers and adding thinds to hand