Res re-roof if a re-roof project is proposed, the following specifications apply. Existing roofing material comp shingles proposed roofing material comp shingles manufacturer owens-corning brand and model tru-def color (if cool roof required) built-up roofing assembly system number per attached listing report (if applicable) n a specific exemption from cool roof requirements (if applicable) cz7 required building inspector field verification (if applicable) note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.