30 sf re-roof () if a re-roof project is proposed, the following specifications apply. Existing roofing material built up hot mop roofing proposed roofing material asphalt shingles manufacturer gaf brand and model timberline hd, sandalwood color (if cool roof required) tan, crrc product # 0676-0133 built-up roofing assembly system number per attached listing report (if applicable) no specific exemption from cool roof requirements (if applicable) no required building inspector field verification (if applicable) yes, complete re-roof note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.