42 sq ft re-roof for (e) sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material concrete tile proposed roofing material existing tile manufacturer boral interwrap brand and model titanium udl50, ebs color (if cool roof required) na 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 note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.