22 sf reroof for existing sfd if a re-roof project is proposed, the following specifications apply. Existing roofing material: tile proposed roofing material: tile manufacturer: boral brand and model: case grande color (if cool roof required): orange, tan or multicolor built-up roofing assembly system number per attached listing report (if applicable): n a specific exemption from cool roof requirements (if applicable): n a required building inspector field verification (if applicable): n a note: self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.