Flashings and sheet metal components help protect transitions between the roof and neighbouring building elements. Their condition, attachment and connections to the membrane must be assessed together to define appropriate work.
Identify the transition points
Membrane upstands at walls, parapet copings and connections around penetrations involve different details. A visible metal component does not necessarily show how waterproofing is achieved underneath. Assessment should consider continuity between components, their condition and earlier work that may have altered the connections. Photographs of recurring problems help establish where closer attention is needed.
Choose a compatible repair
An open joint, distorted component or attachment problem cannot always be solved by adding sealant. Each element’s role should be understood and the repair details must suit the membrane and roofing system. Movement between materials also affects how parts are connected and terminated. Identifying the problem first helps avoid layers of incompatible repair products.
Clarify what remains and what changes
A reroofing quotation should describe work at edges and connections. Ask which components will remain, be adjusted or be replaced, and how findings after removal will be handled. Where a connection also involves masonry, equipment or a wall, coordination with the relevant trades should be planned. Clear scope helps keep adjacent building work from becoming an unexpected omission.
Prepare for our conversation
- Photographs of accessible edges and connections
- Locations of interior water marks
- Previous work on walls and parapets
- Equipment or penetrations added to the roof
Your questions, answered.
Does a leak near a wall always come from flashing?
No. Water may enter through the roof, wall or another connection and travel before becoming visible. The surrounding conditions need assessment before one component is identified as the cause.
Must all metal be replaced during reroofing?
That depends on its condition, dimensions and compatibility with the new assembly. The decision should be stated in the work scope rather than assumed from the start.
Do sealants need follow-up?
Joints and their materials are among the details to monitor according to the system’s recommendations. A compatible, properly applied product does not replace suitable design and sound connections.