Yes — multi-layer torch-applied systems remain robust and cost-effective on many residential and industrial roofs.
Layers are heat-bonded to form a sealed build-up; access, fire safety and detailing must be planned carefully.
Bitumen is multi-layer and familiar; single-ply (EPDM/TPO/PVC) can be lighter/faster depending on the project. We advise after inspection.
Sometimes, if the substrate is sound. Otherwise partial or full replacement is safer — diagnosis first.