21 sq ft re-roof for sfd if a re-roof project is proposed, the following specifications apply. Existing roofing material concrete tile proposed roofing material concrete tile manufacturer mb technology brand and model tu35 color (if cool roof required) crrc0072 built-up roofing assembly system number per attached listing report (if applicable) na specific exemption from cool roof requirements (if applicable) na required building inspector field verification (if applicable) yes remove existing tile, replace underlayment, then re-install existing tile note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.