Chimney Flashing Replacement in the Pittsburgh Area

What chimney flashing replacement involves

When flashing is corroded, badly installed or beyond resealing, replacement installs new metal at the chimney-to-roof joint. Done right, with proper counter-flashing set into the masonry, it seals the joint for the long term.

Why homeowners need it

There's only so long you can keep resealing failing flashing. When the metal itself has corroded or was never installed correctly, new flashing is what actually stops the leak — instead of chasing it with more caulk every year.

Common problems it addresses

• Corroded, rusted-through flashing
• Improperly installed original flashing
• Flashing that's been resealed too many times
• Persistent leaks at the roof-to-chimney joint

Warning signs to watch for

• Rusted or crumbling flashing metal
• Leaks that return no matter how often it's sealed
• Flashing that was never set into the masonry
• Water damage in the roof near the chimney

How we approach the work

Materials and equipment

• New step and base flashing
• Counter-flashing set into the masonry
• Appropriate roofing sealant

What this means for Pittsburgh-area homes

Proper counter-flashing let into the mortar joints is what makes flashing last through Pittsburgh winters — surface-caulked flashing simply doesn't hold up to repeated freeze-thaw. When we replace flashing we do it to last, not to be back next year.