Front flashing
The base flashing on the front is renewed to shed water onto the roof.
Most leaks around a chimney in Fairfield come from the flashing, and a roofer can fix them with new step and counter flashing set into the brick instead of tar, with a cricket behind wide chimneys to keep water from piling up. Dial (973) 858-9960 to talk with a local roofer about the chimney leak.
A chimney is a large masonry box punched through the roof, and sealing around it takes several pieces of flashing working together. Because the chimney and the roof are separate structures, the flashing has to bridge a joint that never stops moving. That is why a single strip of metal glued to the brick with sealant does not last.
Proper chimney flashing has four main parts. Along the front sits a one-piece apron, step pieces run up each side with the shingles, a saddle or cricket diverts water behind, and counter flashing ground into the mortar covers the top edges. Counter flashing is the piece that most often fails or is skipped, replaced by surface-mounted metal and a bead of caulk.
Before replacing flashing, it helps to know whether the chimney above the roof is letting water in. Leaks that continue after new flashing often trace back to the crown, the cap or the brick itself. A careful look covers both the flashing and the visible masonry above it.
If the problem goes deeper than it first looked, a Fairfield roofer may also recommend flashing repair or roof leak repair.
Looking for Fairfield chimney flashing repair? Call (973) 858-9960 to talk to a local roofer.
Call nowChimney flashing is rebuilt from the bottom up, like the rest of a roof.
The roofer looks at the flashing on all four sides, the mortar joints, the crown and cap and the attic framing around the chimney. If the masonry is clearly the source, the roofer will say so.
Shingles around the chimney are removed along with the old flashing, tar and caulk. Any decking that has gone soft from years of leaks is replaced.
A membrane underlayment goes around the chimney, then the front apron and the side step flashing are installed with the shingles. The step flashing is nailed to the roof deck only, never to the brick.
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. Wide chimneys need a cricket under most residential codes.
Counter flashing is let into a ground-out mortar joint and sealed, overlapping the base flashing below. The overlap allows movement while keeping water out.
The base flashing on the front is renewed to shed water onto the roof.
A saddle diverts water around the uphill side and covered with metal or membrane and shingles.
Cap flashing is cut into the masonry instead of caulked to the face.
Step pieces up both sides of the chimney are replaced nailed to the deck, not the brick.
Water-damaged wood at the chimney is cut out while the area is open.
Chimney flashing replacement makes sense when the metal is rusted, the counter flashing is only glued to the brick or the joint has been tarred over several times. If the original flashing was installed incorrectly, more sealant cannot correct the lapping. Adding a cricket during replacement solves the uphill pooling at the same time.
The metal choice matters around masonry. Copper and lead-coated copper last a very long time and form neatly to brick, galvanized steel is durable when painted, and aluminum should be coated or kept out of direct contact with mortar, which can corrode it. Ask which metal the roofer plans to use and why.
Chimney leak repair starts by finding out whether water comes through the flashing or through the chimney itself. 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. Testing the flashing and the masonry separately pins down the source.
When water comes through the chimney, the repair moves up above the roof. Crown cracks, open joints and missing caps are repaired by a mason, and a breathable sealer can cut down how much water the brick absorbs. Those repairs are often done alongside new flashing so the whole leak is solved.
Around Fairfield, chimney leaks often date back to a reroof where the old chimney flashing was reused or covered in sealant. Across Fairfield and nearby communities including Pine Brook, Lincoln Park, Caldwell and Towaco, the chimney type decides the fix: masonry needs counter flashing cut into the brick, and a framed chase needs step flashing behind the siding, so it helps to know which kind you have when you call.
Need chimney flashing repair around Fairfield? Call (973) 858-9960 for a Fairfield roofer who serves the towns around it too.
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, building ice dams that push water up under the shingles. Coastal storms and heavy spring rain drive water sideways into flashing, valleys and old chimneys. That is why roof repair in Fairfield is busiest after a hard winter and before the next one.
Small roof problems caught early usually stay small repairs.
Local roofers see the same roofs and storm damage across Fairfield and nearby towns.
Ask the roofer about the cause, the options and the estimate before work starts.
More questions? Call (973) 858-9960
Fixing the metal flashing at walls, dormers, valleys and roof edges, with new metal instead of another layer of caulk.
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See all roofing servicesCall (973) 858-9960 to talk to a roofer serving Fairfield, NJ.