39 sqft re-roof for (e) sfd. Replace roof sheathing only if damaged. If a re-roof project is proposed, the following specifications apply. Existing roofing material concrete tiles proposed roofing material asphalt shingles manufacturer gaf brand and model owens corning color (if cool roof required) forest brown crrc #0890-0018 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 note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.