Re-roof on existing sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material ashpalt shingles proposed roofing material ashpalt shingles manufacturer owens corning brand and model tru definition duration color (if cool roof required) shast white, crrc prodcut # 0890-0008 built-up roofing assembly system number per attached listing report (if applicable) specific exemption from cool roof requirements (if applicable) required building inspector field verification (if applicable) yes. Complete re-roof (hero program) note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.