25 sf asphalt shingle re-roof for (e) sfd if a re-roof project is proposed, the following specifications apply. Existing roofing material composition shingle proposed roofing material asphalt shingle manufacturer oc brand and model duration premium color (if cool roof required) slate gray 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) old roof to be completely removed note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.