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Primera Consists of Four layers : Non Woven 、Special Modified Coating、 Non Woven 、 Leno. Non Woven acts as base substrate .   1.Highly Breathable2.Highly Water Resistant \ Prevent CondensationCondensation occurs within roof and wall if the warm air inside the building escape through the roof structure and comes into contact with the cold outer surface ( upper deck ). When condensation happens, water droplets form on the upper surface, These water droplets will drip back down into the building coursing damage in roof structure.  Any vapor that does get through the vapor barrier (RB) needs to have a path out of the insulation or building structure, breathable membrane allow this vapor or moisture to pass through. When vapor change to water due to condensation on the ...
PRM85-LE Product PRM85-LE Prime Breathable Membrane CharacteristicNo.TypeTEST RESULTSTEST METHOD1Spec 【m*m】1.50*502 Thickness 【mm】0.3±0.053Weight 【g/m2】85±5ISO536:19954Tensile StrengthMD【N/50mm】320N/50mmGB/T328.9-2007ACD【N/50mm】205N/50mm5ElongationMD【%】29%CD【%】21%6Tear ResistanceMD【N】200NGB/T328.18-2007CD【N】150N7Water Resistance【cm】2mH2O,1h,imperviousGB/T328.10-2007A8Water vapor transmission Rate 【g/m2•day】1000g/m².24hGB/T17146-19979Cold bending—20°C,1h,No crackGB/T328.15-2007
PRM130-LE Product PRM130-LE Prime Breathable Membrane CharacteristicNo.TypeTEST RESULTSTEST METHOD1Spec 【m*m】1.50*502 Thickness【mm】0.5±0.053Weight【g/m2】130±5ISO536:19954Tensile StrengthMD【N/50mm】360N/50mmGB/T328.9-2007ACD【N/50mm】300N/50mm5ElongationMD【%】30%CD【%】29%6Tear ResistanceMD【N】235NGB/T328.18-2007CD【N】220N7Water Resistance【cm】2mH2O,1h,imperviousGB/T328.10-2007A8Water vapor transmission Rate 【g/m2•day】800g/m².24hGB/T17146-19979Cold bending—20°C,1h,No crackGB/T328.15-2007
PRM145-LE Product   PRM145-LE Prime Breathable Membrane CharacteristicNo.TypeTEST RESULTSTEST METHOD1Spec【m*m】1.45*402 Thickness【mm】0.5±0.053Weight【g/m2】145±5ISO536:19954Tensile StrengthMD【N/50mm】480N/50mmGB/T328.9-2007ACD【N/50mm】350N/50mm5ElongationMD【%】20%CD【%】23%6Tear ResistanceMD【N】125NGB/T328.18-2007CD【N】100N7Water Resistance【cm】2mH2O,1h,imperviousGB/T328.10-2007A8Water vapor transmission Rate 【g/m2•day】800g/m2.24hGB/T17146-19979Cold bending—20°C,1h,No crackGB/T328.15-200710Reflectivity91%ASTM E408
Metal Roof System Tile Roof System   Wall Roof System
Radiant barrier with aluminum is a very good vapor barrier which prevent the escape of heated warm air through the roof structure.ENVIROTUFF Radiant barrier use aluminum with Woven materials hot press process, See below:Heat Flows from a hot or warm medium to a cold medium in 3 ways:Radiation Conduction Convection,and radiation occupies an important position.Enviro-tuff is specially designed for roofing installation especially in tropical condition.The key function is to reduce the heat transfer and maintain a comfortable temperature in a building.With the installation of Enviro-tuff, 96% of radiant heat is reflected and prevent from transferring to the building1.High ReflectivityThermal insulation: According to the test of ASTM, the heat transformed by Radiation usually takes up to 90%;2....
WF 201 Product WF201 Envirotuff Radiant BarrierNo.TypeTEST RESULTSTEST METHOD1Spec【m*m】1.25*602 Thickness【mm】0.153Weight【g/m2】100±10ISO536:19954Tensile StrengthMD【N/50mm】550N/50mmGB/T328.9-2007ACD【N/50mm】530N/50mm5ElongationMD【%】19%CD【%】17%6Tear ResistanceMD【N】430NGB/T328.18-2007CD【N】400N7Water Resistance【cm】2mH2O,2h,imperviousGB/T328.10-2007A8Water vapor transmission Rate 【g/m2•day】GB/T1037-1988B9Cold bending—40°C,2h,No crackGB/T328.15-200710Reflectivity95%ASTM E408
WF 202 Product WF202 Envirotuff Radiant BarrierNo.TypeTEST RESULTSTEST METHOD1Spec【m*m】1.25*602 Thickness【mm】0.203Weight【g/m2】145±10ISO536:19954Tensile StrengthMD【N/50mm】665N/50mmGB/T328.9-2007ACD【N/50mm】495N/50mm5ElongationMD【%】20%CD【%】15%6Tear ResistanceMD【N】280NGB/T328.18-2007CD【N】300N7Water Resistance【cm】2mH2O,2h, imperviousGB/T328.10-2007A8Water vapor transmission Rate 【g/m2•day】GB/T1037-1988B9Cold bending—40°C,2h,No crackGB/T328.15-200710Reflectivity95%ASTM E408
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