Chimney Repair in New Jersey

The cap sits on top of the flue and keeps rain, snow, birds and squirrels out; the crown is the sloped concrete or mortar surface that covers the top of the chimney structure around it. A missing or damaged cap lets water run straight down the flue every time it rains, where it soaks the smoke shelf and rusts the damper. A cracked crown lets water into the brick and mortar below it, which is where freeze and thaw does its worst work, and a crown that was built flat, with no overhang, has been shedding water into the masonry since the day it was poured.

The crew repairs or replaces caps and crowns so water is directed away from the chimney instead of into it. A sound cap and a properly sloped crown are the two simplest, most effective ways to avoid a far larger repair a few winters later, and they are the first things checked on every evaluation. Where several flues share one stack, a multi-flue cap covers all of them, including the idle ones that nobody thinks about until a nest falls into the firebox.

Flashing is the metal that seals the joint where the chimney meets the roof, and it is one of the most common sources of roof leaks in New Jersey houses. When it rusts, lifts or was never stepped properly into the mortar joints, water follows the chimney chase into the attic or the ceiling below, and the stain that appears in the bedroom is usually blamed on the roof. The crew reseals, re-steps or replaces flashing as the roof and the masonry allow.

Inside, the flue liner protects the masonry and the framing around it from heat and combustion gases, and a liner with cracked tiles or missing sections affects both safety and draft, on a gas flue as much as a wood-burning one. Liner repair covers those sections, or a new liner where the old one is past saving. On the outside, mortar joints that have cracked or fallen out from freeze and thaw are repointed, and spalled or loose bricks are replaced, so water stops working its way deeper into the stack. Where water has been getting in for years and the surrounding framing stayed damp, mold treatment and removal is sometimes the next call.

Water is the single biggest threat to a masonry chimney. It gets in through a cracked crown, failed flashing, a missing cap or open mortar joints, and once inside, winter makes it worse: water that soaked into brick or mortar freezes, expands and opens the crack a little further each cycle. Over a few seasons that turns hairline cracks into loose bricks, a leaning stack, and a liner that no longer holds together.

Watch for rust stains or damp patches around the fireplace, a musty smell from the firebox, white staining on the brick known as efflorescence, loose or flaking bricks, a chimney that looks like it leans, gaps around the crown, and rusted or lifted flashing at the roofline. Pieces of clay tile in the firebox mean the liner is breaking up, and a damper that has rusted stiff usually means water has been coming down the flue. Any liner damage found during a chimney cleaning is a repair that should not wait for the next season.

Not every chimney problem is visible from the ground, so the evaluation covers the whole system, cap to firebox, before any repair is recommended, and the findings are explained in plain terms with photographs of what was seen from the roof. In most cases a chimney is repaired section by section, cap, crown, flashing, liner or masonry, without tearing down or rebuilding the stack; a full rebuild is reserved for a structure that has become unsafe, and the crew says so if that is what they find.

Every evaluation and estimate is free. AMG is licensed and insured (NJ HIC 13VH13654300) and veteran owned, and the phone is answered 24 hours a day, 7 days a week, so a chimney that dropped a piece of tile into the firebox on a Saturday can be looked at before the next fire. The crew repairs chimneys across the state, from Bergen County and Essex County to Mercer County and the Monmouth County shore.