12 s. F. Reroof for existing sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material torch down proposed roofing material torch down manufacturer jonns manville brand and model appex 4. 5. M color (if cool roof required) 0662-0042a 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) note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.