A roof edge trim is a finishing profile along the roof perimeter. Together with the covering connection, attachment and substrate, it forms the edge detail.
What does this mean on your roof?
A new trim can produce a neat perimeter without establishing the condition beneath the profile. Leakage or detachment therefore requires examination of the complete junction.
Identify the affected side or corner and any earlier edge work, so the assessment does not treat every visible defect as the same problem.
With a thicker roof build-up, an existing profile cannot automatically be reinstated in its previous arrangement. Ask which components will change and how the replacement covering connects. Compare quotations using that complete scope. An item for visible finishing alone differs from repairing the substrate and developing a renewed waterproof interface around the relevant perimeter.
Frequently asked questions
Is a trim the same as an upstand?
No. A trim is a profile; an upstand is a raised construction section receiving a junction.
Is a new trim enough to fix an edge leak?
That depends on the cause and condition of the complete junction, not only the profile.