20 sf re-roof () if a re-roof project is proposed, the following specifications apply. Existing roofing material wood shake proposed roofing material shingles manufacturer certainteed brand and model landmark pro color (if cool roof required) n/a built-up roofing assembly system number per attached listing report (if applicable) n/a specific exemption from cool roof requirements (if applicable) no duct in attic 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.