Re-roof - 19 sq ft 2 unit condo building if a re-roof project is proposed, the following specifications apply. Existing roofing material: comp shingles proposed roofing material: comp shingles manufacturer: gaf brand and model: timberline color (if cool roof required): natural shadow charcoal built-up roofing assembly system number per attached listing report (if applicable): esr-1475 specific exemption from cool roof requirements (if applicable): minimuy r-38 existing creiling insulation note: self-certification by a licensed contractor is acceptable if a signed letter on company letterhead is provided to the building inspector.