25 refoof for existing sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material composition shingle proposed roofing material fiberglass composition laminate shingle manufacturer owners corning brand and model tru def color (if cool roof required) amber built-up roofing assembly system number per attached listing report (if applicable) specific exemption from cool roof requirements (if applicable) no ducts in attic, steep roof required building inspector field verification (if applicable) no ducts in attic, steep roof note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.