39 sq ft misc re-roofing if a re-roof project is proposed, the following specifications apply. Existing roofing material asph shgl proposed roofing material asph shgl manufacturer gaf brand and model timberline hd reflector color (if cool roof required) built-up roofing assembly system number per attached listing report (if applicable) specific exemption from cool roof requirements (if applicable) required building inspector field verification (if applicable) note self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.