Misc total re-roof for sfd, no structural if a re-roof project is proposed, the following specifications apply. Existing roofing material shingle proposed roofing material shingles + 1/2 sheathing manufacturer owens corning brand and model owens corning - duration color (if cool roof required) antique silver built-up roofing assembly system number per attached listing report (if applicable) n/a specific exemption from cool roof requirements (if applicable) n/a required building inspector field verification (if applicable) n/a note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.