40 sf re-roof if a re-roof project is proposed, the following specifications apply. Existing roofing material concrete tiles proposed roofing material concrete tiles manufacturer boral brand and model boral concrete color (if cool roof required) casa grande blend, crrc#0942-0014 built-up roofing assembly system number per attached listing report (if applicable) na specific exemption from cool roof requirements (if applicable) no required building inspector field verification (if applicable) yes note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.