Replacement is not one standard specification. The removal plan and new assembly change with the roof type, structure, geometry, facility, and project criteria.
Exposed-fastener metal roof replacement
Scopes can include panel and trim removal, support and purlin review, damaged component allowances, insulation, vapor and condensation considerations, new panels, fasteners, closures, gutters, penetrations, and transitions.
Standing-seam metal roof replacement
Planning covers existing panels, clips and supports, underlayment or insulation, new panel profile and finish, attachment, thermal movement, curbs, penetrations, perimeter details, drainage, and lifting or staging.
TPO and PVC roof replacement
A replacement can coordinate membrane and insulation removal, deck repairs or allowances, vapor-control requirements, tapered insulation, cover board, attachment, new membrane, welded seams, flashings, edges, and drainage.
EPDM roof replacement
Work can include removal of membrane and wet or unsuitable layers, substrate preparation, insulation and cover board, attachment or adhesion, new EPDM sheets, seams, flashings, terminations, drains, and perimeters.
Modified bitumen and built-up roof replacement
Scopes may remove multiple plies, surfacing, insulation, and flashings before deck work, new insulation, cover board, compatible membrane plies, surfacing, penetrations, edges, and drainage are installed.
SPF and insulated roof assembly replacement
Replacement planning can address foam and coating removal, deck preparation, new complete roof systems, or insulated metal panel removal and installation with supports, joints, fasteners, sealants, openings, thermal continuity, and interior protection.