Res re-roof 1600sf if a re-roof project is proposed, the following specifications apply. Existing roofing material shingles proposed roofing material shingles manufacturer owens cornings brand and model oakridge color (if cool roof required) amber built-up roofing assembly system number per attached listing report (if applicable) na specific exemption from cool roof requirements (if applicable) na required building inspector field verification (if applicable) yes note self-certification of interior attic by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.