Chimney Repair & Liners in Metuchen, NJ
Brick repointing, crown repair, flashing, cap replacement, and stainless-steel liners. Repairs from $450; liners from $950.
About this service
Chimney repair covers everything from brick and mortar restoration to crown rebuilds, flashing replacement, cap installation, and stainless-steel relining for wood, oil, or gas appliances. All American Roofing handles masonry and prefab chimney work in Metuchen and surrounding Middlesex County, NJ towns, and we always provide a written, itemized estimate before any work begins.
What's included
- Brick repointing and tuckpointing - failing mortar ground out and refilled with color-matched Type N or Type S mortar
- Crown repair and rebuild - cracked or wrong-sloped crowns rebuilt with steel-reinforced concrete sized to overhang the brick
- Flashing replacement - new step and counter-flashing set into fresh mortar joints (the most common cause of chimney leaks)
- Chimney cap installation - stainless-steel caps to keep out rain, snow, animals, and embers
- Brick and mortar waterproofing - vapor-permeable siloxane that seals brick without trapping moisture
- Damper repair and replacement - throat and top-mount dampers for any flue size
- Stainless-steel liner installation - sized to the appliance per NFPA 211
Pricing
Basic chimney repairs in Middlesex County, NJ start at $450 for repointing a few rows of brick, crown patching, or replacing a damaged cap. Full crown rebuilds typically run $900 to $1,800. Complete stainless-steel relining starts at $950 and depends on flue height and diameter. Every project gets an itemized written estimate.
When you need chimney repair
- Brick face spalling, flaking, or shedding chunks at the ground
- Visible mortar joint failure - missing, crumbling, or eroded joints
- Cracks in the chimney crown or brown stains down the brick
- Water stains in the ceiling or wall next to the chimney chase
- White efflorescence (salt deposits) on the brick
- Switching to a high-efficiency furnace, water heater, or wood stove
- A Level 2 NFPA 211 inspection is required before a property sale
How it works
- Free inspection. We climb the roof, photograph the chimney crown, flashing, brick, and cap, and write up the findings.
- Diagnose and quote. We isolate the actual leak source (most chimney leaks are flashing or crown, not brick) and price the repair in writing.
- Schedule and permit. Liner installs and structural rebuilds need a permit; repointing and cap work usually do not. We confirm with your municipality.
- Repair. Old flashing is stripped and reset in fresh mortar joints, the crown is rebuilt with steel-reinforced concrete, mortar joints are repointed, and a new stainless cap is installed.
- Final walk. We water-test where appropriate, clean the work area, and walk you through the completed work.
Chimney repair in Middlesex County, NJ
Most homes in Metuchen, Edison, Woodbridge, Iselin, Highland Park, and Sayreville have brick chimneys built decades ago, and NJ's hard freeze-thaw cycle is brutal on mortar joints, crowns, and flashings. The same chimneys are also being asked to vent modern high-efficiency furnaces and water heaters, which often need new stainless-steel liners sized correctly per NFPA 211 to avoid condensation and draft issues.
Frequently asked questions
How much does chimney repair cost in NJ?
Basic repairs from $450. Full crown rebuilds $900–$1,800. Complete stainless-steel relining from $950. Written estimate first - always.
Do I need a chimney liner?
Yes, if your chimney is unlined, has a cracked clay liner, or you're switching to a high-efficiency furnace or water heater. NFPA 211 requires a continuous intact liner for any wood, oil, or gas appliance.
What does chimney repointing involve?
Grinding out failing mortar joints between bricks and refilling with fresh, color-matched mortar. Restores weatherproofing and structural integrity.
How often should chimneys be inspected?
The Chimney Safety Institute of America and NFPA 211 recommend a Level 1 inspection every year. We perform free visual inspections during any roof service and offer full Level 1 and Level 2 inspections on request.
What are the NFPA 211 inspection levels?
Level 1 is a visual check of accessible portions when the appliance and use have not changed. Level 2 is a more detailed inspection with a video flue scan, required after a property transfer, an appliance change, or an event like a chimney fire. Level 3 involves removal of building components when serious hazards are suspected.
Why does my chimney leak only sometimes?
Most chimney leaks are not from the brick - they come from failed counter-flashing where the chimney meets the roof, a cracked or undersized crown, a missing rain cap, or wind-driven rain entering deteriorated mortar joints. The leak only shows during certain wind directions or rain intensities.
What size stainless liner do I need?
Liner diameter is sized to the appliance manufacturer's specification and BTU input per NFPA 211. Wood-burning fireplaces, oil furnaces, gas furnaces, and gas water heaters all have different vent requirements. An undersized liner causes draft problems; an oversized liner causes condensation. Sizing is done at the inspection.
What is a chimney crown and why does it crack?
The crown is the concrete or mortar cap on top of the chimney that sheds water away from the brick. Crowns crack because they were poured too thin, with the wrong mix, or with no overhang or expansion joint between the crown and the flue tile. A cracked crown lets water into the brick below.
Does insurance cover chimney damage?
Sudden damage from wind, lightning, fallen tree limbs, or earthquake is generally covered under standard NJ HO-3 homeowners policies, subject to the deductible. Gradual deterioration, freeze-thaw spalling, and worn mortar are considered maintenance and are not covered.
Do you need a permit for chimney repair in NJ?
Repointing, crown repair, and cap replacement are typically maintenance items that do not require a permit. Liner installation, partial rebuilds, and structural work generally do require a building or mechanical permit pulled from the local construction office. We confirm with your municipality before starting.