Understand the system
A replacement project starts with the existing roof, the building beneath it and a clear account of the work to be removed or retained.
What to discuss
Provide known leak history, available drawings and previous repair records. Ask what the contractor will inspect before proposing a new assembly and how concealed conditions will be reported.
Build a clear scope
Separate removal, substrate work, underlayment, flashings, drainage interfaces, protection and disposal in the scope. Agree on staging and weather planning before the project begins.
Before selecting a contractor
Request the product documentation, a relevant scope, evidence of applicable qualifications and current coverage, and references you can check. Installation methods and warranty terms must be confirmed for the proposed project.