3400sf reroof for existing sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material conc. Tile proposed roofing material conc tile manufacturer borall brand and model barcelona color (if cool roof required) brown 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) na note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.