- 34 sqft re-roof for (e) sfd if a re-roof project is proposed, the following specifications apply. Existing roofing material asphalt shingles proposed roofing material asphalt shingles manufacturer owen corning brand and model tru-def color (if cool roof required) amber (cool roof) 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) old roffing to be removed note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.