Asphalt Shingle re-roof perfomed on a townhome in December 2003 - Final approval granted on permit issued 12/2003.
TPO membrane (fully adhered Polymer ) permitted and installed 1/2011. ASTMD standards associated with this product do not include ASTM D 3161 or ASTM D 7158.
Question: why would you even check this is a 2011 roof. Do you check the NOA on every roof that you inspect. How many inspectors read the NOA on every inspection they do?