Roof flashing repair in NJ. Where most leaks actually start — and where caulk doesn't belong.
Roof flashing is the metal and rubber detail work at chimneys, valleys, walls, vent pipes, and skylights — the parts of the roof that don't shed water on their own. When flashing fails, you get a leak. When the last roofer "fixed" it with caulk, you get the same leak again in eighteen months. Craftsman repairs flashing the right way: stripped back, properly layered, mechanically fastened, and warrantied in writing. Family-owned, NJ-licensed, based in Fairview.
Fairview, NJ
Flashing is the part of the roof everyone forgets about — until it leaks.
Walk almost any leaking roof in NJ and somewhere around 70% of the time the actual entry point isn't the shingle field. It's the flashing. The metal collar around the chimney. The step flashing tucked under siding where the roof meets a wall. The rubber boot around a plumbing vent stack. The Z-flashing under a skylight. These are the joints — the spots where two surfaces meet and the roof needs help to stay watertight. They take the most thermal movement, the most freeze-thaw, the most UV punishment, and they're the most likely to be cheaped out on during the original install.
When flashing fails, the right answer is rarely "more sealant." Sealant is a temporary cosmetic. The right answer is to pull the offending detail apart, look at why it failed (wrong gauge metal, missing step, no kickout, dried-out boot, nail-pop), and rebuild it the way it should have been built the first time. That's what a real flashing repair looks like. If you're chasing the leak itself rather than the source, our roof leak repair page covers the full forensic walk and rebuild.
Get A Free Flashing Inspection
Four things to know about flashing — and why the next repair shouldn't be caulk.
Flashing is unsexy, technical, and the single biggest source of avoidable leaks on residential roofs in NJ. Here's where it fails, what kinds there are, why caulk isn't a repair, and what our warranty actually covers.
Five spots account for almost every flashing-driven leak we see.
Chimney flashing: the chimney is essentially a four-foot-long argument with water, and the chimney-to-roof joint is where most NJ leaks originate. Original step flashing rusts through, counter-flashing pulls out of the mortar joint, and crickets (the small ridge built behind a wide chimney) get skipped on the original install. Step flashing along walls: where the roof slope meets a sidewall, every shingle course needs its own L-shaped piece of metal woven in. When this gets done wrong — face-nailed, missing every other course, replaced with one long strip — water gets behind the siding and rots the wall sheathing without ever showing on the ceiling.
Vent boots: the rubber collar around plumbing stacks dries out and cracks at the 8–12 year mark on most NJ roofs. It's a $40 part and a 20-minute fix when caught early. Skylight flashing: the kit-supplied flashing has to be installed in a specific layered sequence — head, sides, sill — with proper integration into the shingle courses. Shortcuts here leak. Our skylight installation and repair page covers that workflow specifically. Valley flashing: where two roof slopes meet, water concentration is at its highest, and the metal needs to be wide enough and the shingles cut back properly. Cheap valley work is one of the most common original-install corner-cuts on NJ roofs.
There are about eight kinds of flashing on a typical NJ roof. They each fail differently.
Step flashing: small L-shaped pieces of metal, one per shingle course, woven into a sloped roof where it meets a wall. Counter-flashing: the upper piece of metal, usually let into a chimney mortar joint, that overlaps the step flashing and sheds water onto it. Together they form a two-piece system — one moves with the roof, the other moves with the wall — and most chimney leaks are because someone tried to do this with a single bent piece. Apron flashing: the wider front piece at the base of a chimney or wall-meets-roof. Kickout flashing: the small angled piece at the bottom of step flashing that diverts water out into the gutter instead of behind the siding. Missing kickouts are a top-three cause of mystery siding rot.
Valley flashing: metal in the V where two roof slopes meet — open valley uses exposed metal, closed valley laces shingles across it. Drip edge: the L-shaped metal at roof eaves and rakes that directs water into the gutter and protects the wood deck edge. Vent pipe flashing: the rubber-and-metal collar around plumbing vents. Pipe boot is a common name. Skylight flashing: the layered kit-flashing sequence around skylights — head, sides, sill, with shingle integration. Each of these has a service life, a typical failure mode, and a correct repair. We'll name what we're seeing on your roof and walk you through what failed and why before we touch anything.
A real flashing repair takes time, costs more upfront, and saves you from the third visit.
The cheap version of a flashing repair is "show up, smear sealant on the visible failure, leave." It takes 30 minutes and runs a couple hundred dollars. The honest version takes 2–4 hours and runs more — because we have to lift shingle courses to get at the step flashing, pull failed counter-flashing out of the mortar joint, possibly grind out and re-mortar a new reglet, fabricate or buy the right gauge metal, and reweave everything back in with sealant only at code-required spots. The price difference is real. The longevity difference is bigger.
This work often gets caught during a routine roof inspection rather than during an active leak — which is the cheapest time to do it, before water has been sitting in the wall cavity for two seasons rotting the sheathing. If we open the detail and find the underlying deck or wall has gone past the point of a repair, we'll tell you straight: at that point a section reroof or a partial replacement is the honest answer, and our roof replacement page walks through what that path looks like. We'd rather have a hard conversation now than a worse one in eighteen months.
One year minimum on every flashing repair. Longer for full re-flashes done as part of a replacement.
Every standalone flashing repair we do carries a one-year minimum written warranty against leakage at the repaired detail. If the same detail leaks within that window for a reason that's our work — wrong sequence, missed fastener, sealant in the wrong place — we come back, we fix it at no charge, and we don't argue. The warranty is in writing and lives in your file. We won't promise more than that on a single repair because flashing fails for a lot of reasons and not all of them are about how we did the work — but we will stand behind our actual workmanship without games.
If the flashing repair is part of a full roof replacement, the warranty is the manufacturer's full system warranty (up to 50 years on GAF and Owens Corning systems) plus our workmanship warranty on the install. If you're looking at this because the roof is end-of-life and the flashing is just one of three or four issues, our general roof repair page covers the broader repair path and the honest conversation about repair-versus-replace.
The crew that knows flashing failure modes by name — and fixes them at the source.
Flashing repair is the most under-respected, over-bullshitted part of roofing. The honest version is technical, methodical, and worth paying for. The dishonest version is a tube of caulk and a Venmo request. We do the first one.
- NJ-licensed, NJ-insured, family-owned with a permanent Fairview address
- BBB A+ Accredited, GAF and Owens Corning manufacturer-certified
- Strip-and-rebuild repair philosophy — no caulk-over-the-failure quick patches
- Right metal, right gauge, right sequence — kickouts where they belong
- One-year minimum written warranty on every repair
- Photos and notes on what we found and what we fixed
Six steps from first call to written warranty in your file.
Every flashing repair follows the same disciplined sequence — diagnose first, repair second, document last.
Call & One-Hour Window
Call or fill the form — we set a one-hour appointment window. No "between 8 and 5" nonsense. We show up when we said we would.
Locate The Failure
Hands-on roof walk to find the actual failed detail — not just where the ceiling stain is. Photos taken at every stage.
Itemized Quote
Written quote naming the detail, the failure mode, the parts, the labor, and the warranty. No "miscellaneous flashing work" line items.
Strip & Rebuild
Open the failed detail down to clean substrate. Replace metal or boot with the correct part, installed in the correct sequence.
Reweave & Seal
Reintegrate shingle courses around the new flashing. Sealant goes only where the manufacturer specifies — not as a band-aid.
Walkthrough & Warranty
Final walkthrough with before-and-after photos, full cleanup, and the written one-year minimum warranty handed over the same day.
The credentials behind every detail we rebuild.
NJ-Licensed, NJ-Insured, Fairview-Based
Family-owned with a permanent NJ address. We're not a storm-chaser working out of a Tahoe with Pennsylvania plates — we're here next year, and the year after.
BBB A+, GAF & Owens Corning Certified
BBB A+ Accredited and manufacturer-certified by both major shingle systems — the credentials that say we know roofing details, not just sales.
No Caulk-Only "Repairs"
We strip and rebuild flashing details properly. Sealant gets used where the manufacturer specifies — not as the entire repair.
Services often booked alongside flashing repair.
Skylight Installation & Repair
Skylight leaks are almost always flashing leaks. We install, re-flash, and repair skylights with proper layered head/side/sill detail.
Learn MoreSoffit & Fascia Repair
When flashing leaks for years undetected, the soffit and fascia behind it usually need work too. We repair both as a complete fix.
Learn MoreGutter Installation
Drip edge and kickout flashing only work if the gutter system below them works. We tie new flashing into proper drainage every time.
Learn MoreAcross Bergen, Passaic, and Northern New Jersey — where the chimneys are old and the original step flashing is short.
Three steps from suspect flashing to written warranty.
Book the free inspection. Get the itemized quote. We strip, rebuild, and warranty the work — same crew, every time.
Free Flashing Inspection
One-hour appointment window. Hands-on walk of the suspect detail, photos taken, plain-English diagnosis on the spot.
Itemized Written Quote
The failed detail named, the parts listed, the labor priced, the warranty stated. No miscellaneous lines, no surprises.
Strip, Rebuild, Warranty
Same-crew repair done to spec, full cleanup, photos in your file, and a written one-year minimum warranty handed over before we leave.