Most of the leaks we chase in Plant City do not start in the shingles. They start at the flashing: the bent metal that seals the joint where a roof meets a chimney, a wall, a valley, a skylight, or a plumbing vent. Shingles can have years of life left while the flashing around a chimney has already let go. Carapezza Construction & Roofing repairs and replaces chimney and roof flashing across Plant City and the rest of Hillsborough County, and we fix the detail properly instead of smearing caulk over it and hoping.
Flashing repair is one part of our broader roof repair work, and it is the part that gets misdiagnosed most often. A water stain on the ceiling next to the fireplace almost always means flashing, not a bad shingle, and the fix is different.
Why Flashing Fails Before the Roof Does
A shingle roof in Plant City is a single material doing one job. Flashing is where two different materials meet and move at different rates. A brick chimney expands and contracts differently than the plywood deck around it. A stucco wall in Walden Lake or a wood-sided farmhouse out toward Trapnell shifts with heat and humidity, and the roof deck below it shifts on its own schedule. The flashing bridges that gap, and every summer of central Florida sun works on it.
Here is what actually goes wrong:
- The sealant at the top edge of the counter flashing dries out, cracks, and pulls away from the masonry. Central Florida sun does this fast.
- Fasteners back out or rust through, and the metal lifts just enough for wind-driven rain to get under it.
- Galvanized flashing corrodes. Once the coating goes, the steel underneath rusts through in a few wet seasons.
- On a lot of older Plant City homes, the flashing was done wrong from the start, with one continuous strip of metal tucked under the shingles instead of stepped pieces. It holds for a while and then it doesn't.
- Chimney crickets are missing. A wide chimney on the downslope side of a roof with no cricket behind it collects leaves, pine needles, and standing water right where the flashing is weakest.
Hurricane season makes all of this worse. After Helene and Milton in 2024, plenty of the leaks that showed up across Plant City turned out to be flashing that had been marginal for years and finally gave up under sustained wind and rain.
Where Flashing Lives on Your Roof
Every place the roof plane is interrupted needs flashing, and each spot fails in its own way.
Chimneys are the big one. A proper chimney detail has step flashing woven into each course of shingles up the sides, an apron at the front, a saddle or cricket at the back, and counter flashing let into the mortar joints over all of it. When any one of those pieces is missing or done wrong, water gets behind the chimney and runs down the chase into the house.
Wall flashing seals the joint where a lower roof meets a second-story wall or a dormer. On stucco homes this is usually where we find rot, because the stucco was run down over the flashing instead of the flashing being tucked behind a weep screed.
Valley flashing carries the most water on the roof. Open metal valleys need to be wide enough and lapped correctly. Closed-cut shingle valleys need the underlayment underneath to be right, because you cannot see the problem until it leaks.
Skylight flashing is a kit on newer units and a custom job on older ones. Most skylight "leaks" are actually flashing or the seal between the frame and the curb.
Pipe boots around plumbing vents are the cheapest flashing on the roof and the one that fails most reliably. The rubber collar cracks after a decade of Florida sun and the pipe becomes a funnel straight into the attic.
Step Flashing vs. Counter Flashing
Homeowners ask about this a lot, usually after a handyman told them the chimney "just needs new flashing." There are two layers, and both matter.
Step flashing is a series of L-shaped metal pieces, each one lapped over the shingle below it and under the shingle above it, running up the side of the chimney or wall. Water hitting the chimney runs onto a step piece and out onto the shingle surface below. It is woven into the roof and cannot be replaced without lifting shingles.
Counter flashing is the second layer, bent down over the top of the step flashing and anchored into the chimney itself, ideally in a reglet cut into a mortar joint. Its job is to keep water from running down the face of the brick and behind the step flashing. Counter flashing can sometimes be replaced on its own.
When someone reseals only the counter flashing on a chimney where the step flashing has rusted through, the leak comes back. When someone replaces the step flashing but leaves the old counter flashing surface-mounted with a bead of caulk, the leak comes back later. We do both layers when both need it.
Why Sealant-Only "Repairs" Fail
Roof cement and caulk have a place. They do not have a place as the entire repair.
A tube of sealant troweled over failed flashing buys a season, sometimes two. The sun breaks it down, the joint keeps moving, and the crack opens back up in a spot you cannot see from the ground. Worse, the goop often traps water behind it, so the deck rots faster than it would have with the original leak. By the time the stain reappears on the ceiling, we are replacing flashing and cutting out soft decking instead of just replacing flashing.
We see this constantly on Plant City homes that have changed hands once or twice. Three layers of black roof cement stacked up around a chimney is a sign that three people tried the cheap fix and none of them solved it. We take it all off, get down to the deck, and rebuild the detail in metal.
How a Flashing Repair Works
We start by finding where the water is actually coming in, which is rarely directly above the stain. We check the attic side if we can get to it, then go up and inspect the flashing, the shingles around it, and the deck.
If the flashing is the problem, the repair usually runs like this:
- Remove the shingles on either side of the chimney, wall, or penetration, enough courses to expose the full flashing assembly.
- Pull the old flashing, sealant, and any roof cement.
- Check the deck. Soft or delaminated plywood gets cut out and replaced before anything goes back on.
- Install new underlayment and ice-and-water membrane around the penetration.
- Set new step flashing course by course, an apron at the front, and a cricket behind wide chimneys where one is missing.
- Cut a reglet into the mortar and install new counter flashing, or replace the counter flashing in kind if the existing reglet is sound.
- Reinstall shingles, matching the existing ones as closely as the market allows on an older roof.
- Seal the counter flashing joint with a proper masonry sealant, as a finish detail, not as the waterproofing.
Pipe boots and skylight flashing are simpler and faster, and we will often handle several penetrations in one visit.
When Flashing Repair Is Part of a Bigger Job
Sometimes we open up a chimney and find that the leak has been going long enough to rot the decking well beyond the flashing zone, or that the shingles around it are so brittle they crumble when lifted. On a roof that is otherwise near the end of its life, spending money on new flashing and patched-in shingles that will not match is not a great use of your money.
In that case we will tell you, and we will lay out what a full roof replacement would look like, where all the flashing gets done new as part of the job anyway. If the damage came from a storm, our storm damage team can document it for your claim. And if you are not sure what shape the rest of the roof is in, a roof inspection before we commit to a repair is a reasonable first step.
We will not push a replacement when a flashing repair is the honest answer. Most of the flashing work we do in Plant City is on roofs with plenty of life left, and a good repair keeps it that way.
Related Roofing Services
Frequently Asked Questions
Do roofers repair chimney flashing, or do I call a chimney company?
A roofer. The flashing is part of the roof system, woven into the shingles and underlayment, and repairing it means opening up the roof around the chimney. A chimney sweep or mason can handle the crown, the cap, and tuckpointing, and sometimes we coordinate with one when the masonry itself is failing. But the flashing is our work.
How much does chimney flashing repair cost in Plant City?
It depends on the size of the chimney, how many pieces of the flashing assembly need to be replaced, whether the decking under it has rotted, and how hard it is to match your shingles. A simple pipe boot replacement is a small job. A full chimney reflash with a new cricket and deck repair is a bigger one. We look at it, tell you what we found, and give you a written price before we start.
Is chimney flashing repair covered by homeowners insurance?
Usually only if the flashing was damaged by a covered event like a hurricane or windstorm. Flashing that failed from age, corrosion, or a bad original installation is generally treated as maintenance. Every policy is different, so read yours or ask your agent. If your flashing failed during a storm, we can document the damage and provide the estimate your adjuster needs.
Can I just caulk the flashing myself?
You can, and it may hold for a season. But caulk is not a repair for flashing that has rusted, lifted, or was installed wrong. It hides the problem while water keeps getting into the deck. If you want to buy time until we can get there, a careful bead of sealant on an obvious gap is fine. Just do not treat it as the fix.
How long should new flashing last?
Properly installed metal flashing should last as long as the roof around it, and often longer. The sealant at the counter flashing joint is the one part that needs attention over the years. We use materials that hold up to Florida UV and we install counter flashing into the mortar rather than surface-mounting it, which is where most short-lived flashing jobs go wrong.
My leak only shows up in heavy rain with wind. Is that flashing?
Very likely. Wind-driven rain is what gets under lifted flashing and behind counter flashing that has pulled away from the brick. A leak that only appears during summer thunderstorms blowing from one direction is a classic flashing symptom, and it is worth having looked at before hurricane season tests it harder.
If you have a stain near the chimney, a drip at a skylight, or a leak that only shows up when the wind blows, call Carapezza Construction & Roofing at (813) 707-0235 or send us a note through our contact form. We are based at 1605 N Wheeler St in Plant City and handle flashing repair across Plant City, Lakeland, Brandon, Valrico, and the rest of Hillsborough, Polk, and Pasco counties.