31 sqft re-roof for (e) sfd if a re-roof project is proposed, the following specifications apply. Existing roofing material asphalt shingles proposed roofing material asphalt shingles manufacturer gaf brand and model timberline natural shadow color (if cool roof required) artic white. Crrc id# 0676-0089 built-up roofing assembly system number per attached listing report (if applicable) n a specific exemption from cool roof requirements (if applicable) no required building inspector field verification (if applicable) yes