{"id":6933,"date":"2012-10-01T00:00:00","date_gmt":"2012-10-01T00:00:00","guid":{"rendered":"https:\/\/insulation.org\/io\/articles\/exploring-insulation-materials-4\/"},"modified":"2017-06-09T20:25:14","modified_gmt":"2017-06-09T20:25:14","slug":"exploring-insulation-materials-4","status":"publish","type":"articles","link":"https:\/\/insulation.org\/io\/articles\/exploring-insulation-materials-4\/","title":{"rendered":"Exploring Insulation Materials"},"content":{"rendered":"

Polyethylene\/Polyolefin<\/span><\/b><\/p>\n

Polyethylene\/Polyolefin
\ninsulations are defined by ASTM C1427,\u00a0 Type I (preformed tubes) and Type II
\n(sheets). Note: the designations polyolefin and polyethylene refer to the same
\ntype of material and are considered synonymous.<\/span><\/p>\n

Polyethylene\/polyolefin
\nare flexible, closed cell insulation products. The maximum water permeability
\nvalues are 0.05 perm-inch and the maximum thermal conductivity is 0.35
\nBTU-in\/hr sq ft\u00b0F at a mean temperature of 75\u00b0F.<\/span><\/p>\n

The
\npreformed tubular insulation is available in ID size range from 3\/8″ to 4 IPS
\nand in wall thicknesses from 3\/8″ to 1″. The tubular product is available with
\nand without pre-applied adhesive. They are suitable for domestic plumbing
\napplications where the maximum temperature is below 200\u00b0F. The
\npolyethylene\/polyolefin insulations are formulated to meet the flame spread
\nindex of less than 25 and smoke developed index of less than 50.<\/a><\/span><\/p>\n

These
\nmaterials are generally applied without additional vapor retarder facings. All
\nseams including termination points must be sealed with manufacturer recommended
\ncontact adhesive. For outdoor applications, a weatherable jacket must be
\napplied to protect against UV and ozone damage.<\/span><\/p>\n

\n
<\/a>Figure 1<\/b><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Polyethylene\/Polyolefin Polyethylene\/Polyolefin insulations are defined by ASTM C1427,\u00a0 Type I (preformed tubes) and Type II (sheets). Note: the designations polyolefin and polyethylene refer to the same type of material and are considered synonymous. Polyethylene\/polyolefin are flexible, closed cell insulation products. The maximum water permeability values are 0.05 perm-inch and the maximum thermal conductivity is 0.35<\/p>\n","protected":false},"author":[],"featured_media":0,"template":"","categories":[38,34,294,24,301,297],"class_list":["post-6933","articles","type-articles","status-publish","hentry","category-material-selection","category-industrial","category-training","category-contracting","category-design","category-basic-understanding"],"acf":[],"yoast_head":"\nExploring Insulation Materials - Insulation Outlook Magazine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/insulation.org\/io\/articles\/exploring-insulation-materials-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Exploring Insulation Materials\" \/>\n<meta property=\"og:description\" content=\"Polyethylene\/Polyolefin Polyethylene\/Polyolefin insulations are defined by ASTM C1427,\u00a0 Type I (preformed tubes) and Type II (sheets). Note: the designations polyolefin and polyethylene refer to the same type of material and are considered synonymous. Polyethylene\/polyolefin are flexible, closed cell insulation products. 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