Understand the building
Bring records of the existing system, previous leaks, repairs, and rooftop equipment. How the building is used may affect the inspection and the work schedule.
Review the assembly
Membrane, insulation, deck condition, drainage, and penetrations all influence the available options. A surface-only comparison can leave important questions unanswered.
Coordinate the work
Discuss staging, occupant access, delivery routes, equipment protection, and communications. Ask how any phased work will be coordinated with normal operations.
Compare written details
Evaluate the proposed system, preparation, warranty terms, exclusions, and maintenance requirements. Confirm any assumptions before choosing a contractor.
Make it specific to your home.
This is general planning information, not a diagnosis, quotation, insurance determination, or promise of product performance. A property-specific assessment and written scope are the next steps.