A roof can combine metal, tile, membrane, and adjacent wall materials. Their junctions deserve compatibility and exposure review. Choosing suitable individual products does not automatically create a suitable connection between them.
What to do next
Ask the contractor to explain the transition details and which documents govern them. Review runoff paths and attachment materials. Keep the completed junction records with the roof file so future repairs preserve the intended relationship between systems.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.