Flashing repair

Flashing seals transitions: chimneys, walls, valleys, vents and skylights. Because these joints concentrate water, worn or poorly installed flashing is a frequent source of leaks.

Signs to discuss with a roofer

Leaks near chimneys or sidewalls
Rust or lifted metal at transitions
Cracked sealant around vents
Stains on interior walls below a roof-wall junction

Before you hire

Reseal or rebuild

Sealant is a short-term fix. Ask whether step or counter flashing should be replaced rather than caulked.

Masonry coordination

Chimney flashing may involve cutting into mortar joints. Ask who handles masonry repairs if needed.

Material match

Flashing metal should be compatible with adjacent materials to limit corrosion. Ask what metal will be used.

Questions to ask contractors

Will you replace the flashing or reseal it?
Does the repair require removing nearby shingles?
How will you match existing materials?
Will you show me photos of the finished detail?

Companies listing this service

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Common questions

Can flashing be repaired without a new roof?

Frequently, yes. Flashing can often be replaced locally, though some shingles around it may need to be lifted or replaced.

What is counter flashing?

A second layer of metal, often set into masonry, that covers the top edge of step or base flashing to shed water.