3000sf reroof for existing sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material asph shingle proposed roofing material asph shingle manufacturer owens corning brand and model woodcrest color (if cool roof required) built-up roofing assembly system number per attached listing report (if applicable) specific exemption from cool roof requirements (if applicable) steep slope in climate zone 7. Required building inspector field verification (if applicable) old roofing being removed. Note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.