29 sfhra re-roof for existing sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material: asphalt shingles proposed roofing material: asphalt shingles manufacturer: owens corning roofing brand and model: oakridge color (if cool roof required): grey built-up roofing assembly system number per attached listing report (if applicable): n a specific exemption from cool roof requirements (if applicable): n a crrc#0890-0013 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.