Protect the joints where a roof meets a wall, chimney or opening. A sound repair restores the water-shedding connection.
Free inspectionStart with the roof concern
Repair and replacementUnderstand the useful work
Home and commercialHelp for the building in use
Roof Flashing Repairs in Mission
Flashing bridges the interruption between roof surfaces and another part of the building. Step flashing rises with the shingle courses along a wall. Counterflashing covers the upper edge at masonry. A valley channels water between roof planes. These pieces need properly placed laps and room to drain.
A separated, corroded or poorly connected piece gives water a route behind the roof covering. Sealant is useful in specified compatible details, but a thick surface patch cannot replace missing laps or repair metal that has failed beneath it.
Chimney, Wall and Valley Flashing Work
Chimney joints
The base and step details shed water around the chimney while counterflashing protects the upper edge. Masonry or crown leaks are a separate condition that can require another trade.
Roof-to-wall joints
Opening adjoining shingles exposes the step pieces and wall connection. The repair needs to join the building’s water-resistant layers, not simply cover the outside seam.
Valleys and transitions
Debris, damage and incompatible joins can interrupt the valley’s drainage. The material around the valley must still support a sound connection when it is rebuilt.
Flashing Repair Scope and Cost in Mission
Height, access and the length of the joint matter, but hidden layers also change the job. Brittle shingles, deteriorated decking or siding that conceals the upper flashing connection can require additional work around the repair.
During replacement, flashing is evaluated with the new covering so the renewed surface does not leave a failed joint behind. See roof replacement scope
Roof Flashing FAQs
Can flashing be repaired without replacing the whole roof?
Yes, when the surrounding roof and wall materials can be opened and connected soundly. Deterioration around the joint can enlarge the repair.
Does a chimney leak always come from the roof flashing?
No. Masonry, the chimney crown and other building components can admit water too. Inspection separates the roofing connection from those other sources.
