23 sf re-roof () if a re-roof project is proposed, the following specifications apply. Existing roofing material build up roof proposed roofing material polyflex sa manufacturer polyglass brand and model polyflex sa color (if cool roof required) polyfresko esr-2018 system #15 built-up roofing assembly system number per attached listing report (if applicable) n a specific exemption from cool roof requirements (if applicable) n a required building inspector field verification (if applicable) n a