Which commercial roofing systems should I compare?
GAF’s commercial system specifications include TPO, PVC, SBS and APP modified bitumen, and built-up roof assemblies. EPDM and other systems have their own manufacturer specifications; compare the proposed product and assembly rather than a material name alone.
What makes a commercial roof scope complete?
Name the existing assembly, removal or recover approach, substrate, insulation, membrane or asphaltic system, attachment, edges, penetrations, drainage and cleanup. Product specifications govern the listed system and project conditions.
How should work be phased around an occupied building?
Show work areas, access routes, temporary protection and how openings will be closed at the end of each work period. Identify the building operations or tenant access that the schedule must accommodate.