Reroof 33 sqft for existing sfd. If a re-roof project is proposed, the following specifications apply. Existing roofing material: wood shake proposed roofing material: comp shingles manufacturer: gaf brand and model: timberline high def color (if cool roof required): n a built-up roofing assembly system number per attached listing report (if applicable):esr-1475 specific exemption from cool roof requirements (if applicable): climate zone 7 w steep slope. Required building inspector field verification (if applicable): none note: self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.