What does roof flashing replacement cost, and what drives the price?
Short answer. Flashing replacement cost depends far more on where the flashing is and what has to come apart to reach it than on the metal itself. Replacing a pipe boot is a small job, while reflashing a chimney or a long sidewall behind siding or brick means removing shingles, cutting masonry or pulling siding, and fixing any rot found underneath.
What actually drives the price
- Location: a chimney, skylight, sidewall or headwall all require removing the shingles around them. Step flashing is woven into every course, so it cannot be swapped out in one piece.
- What covers the wall: vinyl or fiber cement siding has to be lifted or trimmed back, brick needs a new reglet cut into the mortar for counterflashing, and stucco is the hardest because it may need patching afterward.
- Metal: aluminum and galvanized steel are the budget options, prepainted steel costs more, and copper costs several times more and needs soldering.
- Hidden damage: long running leaks rot decking and sometimes wall sheathing. A fair quote explains how wood replacement is priced if it is found.
- Roof condition: older shingles crack when lifted, so a roofer may replace more shingles than planned, and discontinued shingles may not match.
- Access: steep or two-story roofs take more safety equipment and time.
Repair alone, or with a new roof?
If the shingles have good years left, replace the failed flashing and leave the rest. If the roof is near the end of its life, flashing work now is money spent on details that will be torn off again soon. During a replacement, new step flashing, kickouts, pipe jacks and drip edge are normally part of the job, and it is the cheapest time to upgrade chimney counterflashing. A full replacement in North Georgia typically runs roughly $8,000 to $16,000, which is worth weighing against a large flashing job on an old roof.
Insurance
Flashing bent or torn by wind or a falling limb can be part of a storm claim, while flashing that simply wore out is maintenance. See roof flashing explained and roof replacement cost in Georgia.