A recover may reduce disposal and keep more of the existing membrane undisturbed, but it narrows access to concealed conditions after the new layer goes down. Replacement opens the assembly for broader deck and insulation review, although it requires more removal and temporary protection. We lay out both paths when each is technically plausible. The comparison names what stays, what comes off, how transitions change and which future inspection points remain available.
System choice also depends on the existing surface, attachment method, slope, rooftop activity and compatibility. An overlay may use a mechanically attached or adhered membrane, insulation boards, cover board or a restoration system, depending on the design. We avoid pairing materials based only on surface appearance. The owner can compare TPO roof options and EPDM assemblies against existing conditions, or consider coating restoration where the system and surface qualify.
Code and design review still apply before another layer is installed. Greeley’s adopted code is the 2021 International Building Code with city amendments, so permit questions and assembly limits need a project-specific check. We confirm applicable requirements with the City and put the approved layer count, insulation, attachment and edge details into the plan. Where the structure or code path does not support an overlay, the recommendation moves to removal and replacement rather than stretching the recover scope.