Chimney saddle
Water and debris are steered around the chimney and covered with metal or membrane and shingles.
Roof Repair
Chimney Flashing Repair Boonton, NJ
A roofer in Boonton can stop most chimney leaks by replacing the flashing where the chimney meets the roof: step flashing along the sides, counter flashing cut into the mortar, an apron at the front and a back pan or cricket behind, with a cricket behind wide chimneys to keep water from piling up. One call to (862) 420-3040 reaches a nearby roofer who handles chimney flashing.
A chimney is a large masonry box punched through the roof, and sealing around it takes several pieces of flashing working together. The brick and the roof framing move independently as the house settles and seasons change, so the seal between them has to allow for movement. Tar and caulk alone cannot handle that movement for long.
Proper chimney flashing has four main parts. The front gets an apron, the sides get step flashing, the back gets a pan or cricket, and counter flashing tucked into the brick seals the top of it all. Counter flashing is the piece that most often fails or is skipped, replaced by surface-mounted metal and a bead of caulk.
Not every leak around a chimney is a flashing leak. Leaks that continue after new flashing often trace back to the crown, the cap or the brick itself. Sorting out which one is leaking avoids paying for the wrong repair.
Chimney Flashing Repair is often paired with flashing repair and roof leak repair, depending on the cause.
Dealing with this in Boonton, NJ right now? Call (862) 420-3040 to reach a nearby roofing contractor.
Call nowThe process
The chimney flashing process
The work follows the path water takes, front to back.
Inspect the chimney
Every side of the chimney is checked, along with the masonry above the roof and the decking around the opening from the attic. A hose test on one side at a time can confirm the source.
Clear the joint
The roofer removes the existing metal, layers of tar and the nearby shingles. Soft or rotted decking around the chimney is replaced at this stage.
Set the apron
Ice and water shield goes down first, then the apron across the front and step flashing up each side, one piece per shingle course. The step flashing is nailed to the roof deck only, never to the brick.
Install the back pan
On the uphill side, a back pan or saddle is fitted, and on wider chimneys a cricket is framed to split the water around it. Building codes call for a cricket behind chimneys wider than about thirty inches across the slope.
Cut in the counter flashing
The roofer grinds a slot into a mortar joint, bends the counter flashing into it and seals it, so it laps down over the step flashing. The overlap allows movement while keeping water out.
What is included
Chimney flashing parts
Side flashing
Step pieces up both sides of the chimney are replaced lapped so water runs downhill.
Decking repair
Water-damaged wood at the chimney is cut out so the shingles have solid nailing.
Cap flashing
Cap flashing is cut into the masonry and sealed at the joint.
Apron flashing
The front of the chimney gets a new apron lapped over the shingles below.
Related service
Chimney Flashing Replacement Boonton, NJ
Replacing the flashing outright is the better choice when patches keep failing or the metal has corroded. When the basic design is wrong, repairs only delay the next leak. Replacement is also the natural time to add a cricket if the chimney lacks one.
Not every flashing metal suits brick. Copper is a long-lasting choice for counter flashing, while aluminum needs protection from contact with lime in the mortar. Matching the metal to the masonry avoids early corrosion.
Related service
Chimney Leak Repair Boonton, NJ
Leaks around a chimney have two main sources: the flashing at the roof and the masonry above it. Flashing leaks show up during rain at the roof line, often worse on the uphill side, while masonry leaks can appear on any side and may continue for a while after the rain stops as soaked brick drains. A careful water test, one side at a time, can tell the two apart.
When water comes through the chimney, the repair moves up above the roof. A cracked crown needs sealing or rebuilding, a missing cap lets rain straight down the flue, and porous brick can be treated with a breathable water repellent made for masonry. Those repairs are often done alongside new flashing so the whole leak is solved.
Local help
Chimney Flashing Repair Near Me
In Boonton, many chimney flashing problems show up on homes with wide brick chimneys and no cricket behind them. Homes in Boonton and nearby towns like Lake Hiawatha, Mountain Lakes, Parsippany and Towaco range from older houses with full masonry chimneys to newer ones with framed chases wrapped in siding, which are flashed more like a sidewall, so expect the roofer to ask which type is on your house.
Need chimney flashing repair around Boonton? Call (862) 420-3040 for a Boonton roofer who serves the towns around it too.
Roofs in this climate
Winters here are long and cold, with snow on the roof for weeks at a time and plenty of nights below freezing. When warm attic air melts the snow, the meltwater runs down and freezes again at the eaves, which is how ice dams form and back water up under the shingles. Strong coastal storms push rain into every weak spot at the flashing and valleys. Most homeowners in Boonton, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why fix it now
Drier ceilings
A roof problem fixed early rarely spreads to the decking, the insulation or the ceilings.
Roofers who know Boonton
Roofers in Boonton know the roof types and weather wear common in local homes.
Clear next steps
Ask the roofer about the cause, the options and the estimate before work starts.
Common questions about chimney flashing repair
Who fixes chimney flashing, a roofer or a mason?
The flashing belongs to the roof, so a roofer is the right call for it. Cutting the counter flashing into the mortar joint is part of that job. Damage to the crown, brick or mortar beyond that is masonry work.
What is a chimney cricket?
It is a little roof-like peak that sits behind the chimney. It diverts runoff, leaves and snow to each side so they do not collect behind the chimney. Wide chimneys need one under most building codes.
What causes a chimney leak if the flashing is new?
Water can still get in through the top or sides of the chimney. Open joints, spalling brick and a damaged crown all let water in above the flashing. In some cases, condensation inside the flue is the cause. Call (862) 420-3040 to have the source traced.
Can chimney flashing be repaired without replacing it?
Minor problems such as a loose counter flashing piece can be refastened into the mortar. When the metal is rusted, missing pieces or was never installed correctly, replacement is the lasting fix. Another coat of tar is a short-term patch.
What are the signs of a chimney flashing leak?
Look for damp spots near the chimney after rain, both in the house and in the attic. From the attic, stained rafters and decking around the brick confirm water is getting in. On the roof, rusted metal, loose counter flashing and heavy tar are warning signs. Call (862) 420-3040 to have a roofer check it.
More questions? Call (862) 420-3040
Often needed together
Flashing Repair
Fixing the metal flashing at walls, dormers, valleys and roof edges, with new metal instead of another layer of caulk.
Learn moreRoof Leak Repair
Leak repairs that fix the entry point, not just the ceiling stain, before wet decking and insulation turn into rot.
Learn moreRoof Leak Detection
Tracing hidden roof leaks with attic checks, moisture meters, hose testing and infrared scans, with a clear answer on roof leak versus condensation.
Learn moreShingle Roof Repair
Spot repairs for wind, hail and age damage on an asphalt shingle roof, without tearing off the whole roof.
Learn more
Looking for something else?
See all roofing servicesTalk to a Boonton roofer about chimney flashing repair
Call (862) 420-3040 for a local roofer in Boonton and nearby towns.