{"id":6871,"date":"2013-12-01T00:00:00","date_gmt":"2013-12-01T00:00:00","guid":{"rendered":"https:\/\/insulation.org\/io\/articles\/new-column-insulation-finishes-this-months-topic-polymeric-plastic-rolls-or-sheets\/"},"modified":"2013-12-01T00:00:00","modified_gmt":"2013-12-01T00:00:00","slug":"new-column-insulation-finishes-this-months-topic-polymeric-plastic-rolls-or-sheets","status":"publish","type":"articles","link":"https:\/\/insulation.org\/io\/articles\/new-column-insulation-finishes-this-months-topic-polymeric-plastic-rolls-or-sheets\/","title":{"rendered":"New Column: Insulation Finishes &#8211; This Month&#8217;s Topic: Polymeric (Plastic) Rolls or Sheets"},"content":{"rendered":"<p class=BasicParagraph><span style=':16.0pt;:120%;\n:\"Calibri\",\"sans&ndash;serif\";color:windowtext;text&ndash;transform:uppercase;\n:&ndash;.3pt'><span style='text-transform:uppercase'><span style=\"font-size:14px;color:#008000\"><strong>Product Characteristics of Weather Barriers, Vapor Retarders, and Finishes<\/strong><\/font><\/span><\/span><\/p>\n<p class=BasicParagraph><span style=':16.0pt;:120%;\ntext&ndash;transform:uppercase;:&ndash;.3pt'><br \/>\n<\/span><span style=':10.0pt;:120%;:\"Calibri\",\"sans&ndash;serif\";\ncolor:#3E444F'>Polymeric (plastic) rolls or sheets are available at various<br \/>\nthicknesses. These materials are glued, solvent welded, or taped depending on<br \/>\nthe polymer. Elbows and tees are also available for piping for some type of<br \/>\npolymers. Typical polymeric (plastic) jacketing materials are:<\/span><\/p>\n<p><UL><\/p>\n<p class=MsoNormal style=':.3in;:&ndash;13.5pt;:\n120%;:none;:middle'><LI>Polyvinyl Chloride (PVC)<\/span><\/p>\n<p class=MsoNormal style=':.3in;:&ndash;13.5pt;:\n120%;:none;:middle'><LI>Polyvinyliedene Chloride (PVDC)<\/span><\/p>\n<p class=MsoNormal style=':.3in;:&ndash;13.5pt;:\n120%;:none;:middle'><LI>Polyethylene Terephthalate (PET)<\/span><\/p>\n<p class=MsoNormal style=':.3in;:&ndash;13.5pt;:\n120%;:none;:middle'><LI>Polyvinyl Flouride (PVF)<\/span><\/p>\n<p><\/UL><\/p>\n<p class=MsoNormal style=':13.5pt;:13.0pt;:\nnone;:middle'><b><span style=':12.0pt'><font color=\"#008000\">PVC Jackets<\/font><\/span><\/b><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'>PVC<br \/>\njackets are made of a durable, attractive, and easy&ndash;to&ndash;clean material that is<br \/>\ntypically field&ndash;applied over unfaced insulation and most factory&ndash;applied<br \/>\njackets where additional protection is necessary. PVC jackets are covered by<br \/>\nASTM Standard Practice C921&ndash;10, Types I and II, Grade 4.<\/span><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'> PVC<br \/>\njackets are available in several thicknesses and colors. Standard thicknesses<br \/>\nare 10, 15, 20, 30, and 40 mils, with 20 and 30 mils being the most common<br \/>\nthicknesses. Thicknesses of 30 mils are recommended for outdoor applications.<br \/>\nJacketing meant for outdoor use should be UV stabilized. While PVC jacketing is<br \/>\nusually white, jackets are available in a variety of colors (colored jacketing<br \/>\nis normally not available with UV stabilization).<\/span><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'> Several<br \/>\nmanufacturers and fabricators offer PVC &#8220;cut and curl&#8221; jacketing products.<br \/>\nFitting covers are also available for covering elbows, tees, valves, flanges,<br \/>\nmechanical couplings, drain bodies, strainers, end caps, and other common<br \/>\npiping products. Accessory products (solvent adhesive, tapes, stainless steel<br \/>\nthumbtacks, etc.) are also available from manufacturers.<\/span><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'> PVC<br \/>\njacketing up to 30 mil thicknesses generally meet 25\/50 flame&ndash;spread and<br \/>\nsmoke&ndash;developed indexes. Jacketing temperatures should be kept below 150\u00b0F for<br \/>\nhot services. PVC jackets can be used in areas requiring frequent washdown and<br \/>\nare used extensively for applications requiring USDA and FDA approval. To<br \/>\nachieve USDA and FDA approval, PVC jackets should be installed with continuous<br \/>\nsolvent welded joints and seams. PVC jackets and fittings, when applied over an<br \/>\nintermediate vapor retarder and properly sealed, can be used on cold systems.<\/span><\/p>\n<p class=MsoNormal style=':13.5pt;:13.0pt;:\nnone;:middle'><b><span style=':12.0pt'><font color=\"#008000\">PVDC<br \/>\nFilm<\/font><\/span><\/b><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'>PVDC Film<br \/>\nis a flexible and tough vapor&ndash;retarder facing that is applied to the exterior<br \/>\nof pipe, vessel, and equipment insulation systems. This vapor retarder consists<br \/>\nof a biaxially oriented homogeneous opaque white polymer film. It can be<br \/>\nfactory or field applied to the surface of the insulation and is available in 2<br \/>\nthicknesses, 4 and 6 mils, both at 35.5&#8243; wide and more than 250 feet long. When<br \/>\nfactory applied to insulation, the lap joint of the vapor retarder is sealed in<br \/>\nthe field using a self&ndash;sealing lap (SSL). The PVDC tape is the same type of<br \/>\nhomogeneous white film to which an adhesive backing which does not require<br \/>\nrelease paper, has been applied. The tape is available at 2 and 6 mil<br \/>\nthicknesses; widths of 1&#8243;, 2&#8243;, and 3&#8243;; and 150 feet length. PVDC films are not<br \/>\nintended for exterior applications unless protected by a suitable weather<br \/>\nbarrier.<\/span><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'> ASTM<br \/>\nStandard Specification C1136&ndash;10, Types VII\u00a0 and VIII covers this type of<br \/>\nvapor&ndash;retarder facing for use where insulation outer surface temperatures are<br \/>\n&ndash;20 to 150\u00b0F. This ASTM standard specification establishes requirements for<br \/>\npermeance, burst strength, tensile strength, dimensional stability, flame\/smoke<br \/>\nperformance, zero fungal growth, and lack of cracking or delamination.<\/span><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'> ASTM<br \/>\nStandard Practice C921&ndash;10, Type II, Grade 4 covers this type of film for use as<br \/>\na vapor&ndash;retarding outer jacket on thermal insulation over mechanical equipment<br \/>\nsuch as tanks, pipe, and vessels. The 6 mil PVDC film meets the permeance<br \/>\nrequirements of Class A, &#8220;Extremely low permeance&#8221; or 0.01 perms maximum. The 4<br \/>\nmil PVDC film meets the permeance requirements of Class B, &#8220;Very low permeance&#8221;<br \/>\nor 0.02 perms maximum.<\/span><\/p>\n<p class=MsoNormal style=':120%;:none;:\nmiddle'><span style=':10.0pt;:120%;color:#3E444F'> Key<br \/>\napplications for PVDC vapor retarder is in insulation systems for pipe,<br \/>\nequipment, tanks, and ducts&mdash;especially those operating at temperatures below<br \/>\nambient such as food and beverage lines, refrigeration, ammonia refrigeration,<br \/>\nand liquid natural gas (LNG) pipe. PVDC film is applied to the insulation on<br \/>\nstraight sections of pipe or to large surfaces like tank or duct walls. PVDC<br \/>\ntape is used to seal joints in the film, at vapor retarder butt joints on pipe<br \/>\ninsulation, wrapped around complex insulation shapes such as fittings and<br \/>\nelbows, and can be used to repair physical damage to the vapor retarder film.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Product Characteristics of Weather Barriers, Vapor Retarders, and Finishes Polymeric (plastic) rolls or sheets are available at various thicknesses. These materials are glued, solvent welded, or taped depending on the polymer. Elbows and tees are also available for piping for some type of polymers. Typical polymeric (plastic) jacketing materials are: Polyvinyl Chloride (PVC) Polyvinyliedene Chloride<\/p>\n","protected":false},"author":[],"featured_media":0,"template":"","categories":[37,38,294,24,301,297],"class_list":["post-6871","articles","type-articles","status-publish","hentry","category-market-research","category-material-selection","category-training","category-contracting","category-design","category-basic-understanding"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>New Column: Insulation Finishes - This Month&#039;s Topic: Polymeric (Plastic) Rolls or Sheets - 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\/new-column-insulation-finishes-this-months-topic-polymeric-plastic-rolls-or-sheets\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New Column: Insulation Finishes - This Month&#039;s Topic: Polymeric (Plastic) Rolls or Sheets\" \/>\n<meta property=\"og:description\" content=\"Product Characteristics of Weather Barriers, Vapor Retarders, and Finishes Polymeric (plastic) rolls or sheets are available at various thicknesses. 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