Re-roof for (e) sfd if a re-roof project is proposed, the following specifications apply. Existing roofing material wood shake proposed roofing material shingles + radiant barrier sheathing manufacturer owens corning brand and model oakridge color (if cool roof required) sierra gray 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) note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.