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TECHNICAL DATA BULLETIN <br /> ersiWeld TPO Reinforced Membrane <br /> Extreme Testing for Severe Climates Environmental Cycling subjects the membrane to repeated cycles of heat <br /> ASTM Standard D6878 is the muleriol specificution for Thermoplastic aging,hot-water immersion,and xenon-arc exposure <br /> Polyolefin-Bused Sheet Roofing It covers material property requirements ASTM requirement-none <br /> for TPO roof sheeting and includes initial and aged properties after heat Versico Extreme test": <br /> and xenon-arc exposure.As stated in the scope of the standard,"the tests 10 days heat aging at 240°F(11 BIC)followed by <br /> and property limits used to characterize the sheet are values intended to <br /> ensure minimum quality for the intended purpose"Versico's goal is to - 5 days water immersion at 158"F(70"C)followed by <br /> produce TPO that delivers maximum performance for the intended purpose 5,040 kJ/m2(2000 hours at 0.70 W/m2 irradiance)xenon-arc <br /> of roofing membranes.Maximum performance requires the membrane to exposure <br /> for exceed the requirements of ASTM D6878. 'Test specimen is 2 75'(69 85 mm by 140 mm)by 5 5"piece of membrane with edges <br /> Heat Aging accelerates the oxidation rate that roughly doubles for each sealed <br /> Criterion-after 3 complete cycles,test specimens sholl remain flexible and not hove <br /> 18°F(10 C)increase in roof membrane temperature.Oxidation(reaction any crarking under lox magnification while vnapped around a 3"(70 2 mm)-diameler <br /> with oxygen)is one of the primary chemical degradation mechanisms of mandrel <br /> roofing materials- SupplementalApprovals, Statements <br /> Versico Testing - Heat Aging and Characteristics: <br /> VersiWeld 1 VersiWeld TPO meets or exceeds the requirements of ASTM D6878 <br /> ASTM Requirement Requirement Standard Specification for Thermoplastic Polyolefin-Based Sheet <br /> ASTM lest 32 weeks— >128 weeks Roofing. <br /> 2401 2. VersiWeld TPO membranes conform to requirements of the US <br /> -Heat exposure comparable to 3,120 weeks(60 years)at 185°F for 8 hours/day E.P.A.Toxic Leachate Test(40 CFR part 136)performed by an <br /> Test specimen is a 2"by 6"(50 8 mm by 152 4 mm)piece of independent analytical laboratory. <br /> 45-mil(1.14 mm)membrane unbacked,placed in circulating 3. VersiWeld TPO was tested for dynamic puncture resistance per <br /> hot-air oven ASTM D5635-04 using the most recently modified impact head <br /> Criterion-no visible cracks after bending aged test specimen 45-mil(1 14 mm)was watertight after an impact energy of 12 5 J <br /> around 3"(76 2 mm)-diameter mandrel (9.2 ff-Ibf)and 60-mil(1 52 mm)was watertight after 22 5 J <br /> (16 6 ft-Ibf).80-mil(2 03 mm)EXTRA was watertight after an <br /> A-Trac testing combines accelerated weathering with real-world conditions impact energy of 30 0 J(221 ft-Ibf) <br /> using an array often mirrors to reflect and concentrate full spectrum <br /> sunlight onto membrane test specimens The Q-Trac device automatically 4 All FM approved assemblies have been tested to pass FM 4470 for <br /> tracks the sun's path from morning to night.Also,it adjusts to compensate toot traffic resistance <br /> for seasonal changes in the sun's altitude.Eight years in Q-Trac testing is <br /> equal to 40 years of real-world exposure.Versico requires its VersiWeld <br /> TPO membranes to pass the equivalent of 40 years of exposure in the <br /> Q-Trac. <br /> Versico Testing - Q-TRAC <br /> ASTM D6878 Requirement VersiWeld Requirements <br /> ASTM Test N/A Equivalent of 40 years of <br /> N/A exposure <br /> VERSICO <br /> ROOFING SYSTEMS <br />