Chimney Flashing Repair in Essex County, NJ
Chimney flashing is the #1 source of leaks around chimneys. When the seal between your roof and chimney fails, water gets into your attic, walls, and ceilings. We find the exact leak point and fix it right the first time.
What Is Chimney Flashing and Why It Fails
Chimney flashing is a two-part waterproofing system that seals the gap where your chimney meets the roof. Step flashing consists of L-shaped metal pieces woven into each shingle course along the sides of the chimney. Counter flashing is embedded into the chimney mortar joints and folds down over the step flashing, creating a layered barrier that sheds water away from the joint.
The problem is that your roof and chimney are two different structures that move independently. Thermal expansion and contraction — especially through New Jersey's freeze-thaw cycles — cause the roof deck and chimney masonry to shift at different rates. Over time, this movement cracks sealant, separates flashing from mortar joints, and creates gaps where water enters. Add in deteriorating mortar, ice dam pressure, and years of weather exposure, and chimney flashing failure is one of the most common roofing problems in Essex County.
Signs Your Chimney Flashing Needs Repair
Water Stains Near Chimney
Brown or yellow stains on the ceiling or walls near your chimney are the most common sign of flashing failure.
Musty Smell in Attic
A damp, musty odor in the attic near the chimney area indicates moisture is getting in through compromised flashing.
Visible Gaps in Flashing
Gaps between the flashing metal and chimney masonry mean the seal has broken and water has a direct path inside.
Rust Stains on Chimney
Rust streaks running down the chimney exterior indicate the flashing metal is corroding and needs replacement.
Dampness After Rain
If you notice dampness or dripping in the attic after rainstorms, the chimney flashing is likely the source.
Missing or Lifted Flashing
Flashing pieces that are visibly missing, bent, or lifted away from the chimney require immediate attention.
Our Chimney Flashing Repair Process
Chimney leak investigation
We trace the exact water entry point around your chimney using visual inspection and, when needed, controlled water testing. Many chimney leaks originate from unexpected locations, so we check step flashing, counter flashing, mortar joints, the chimney cap, and the roof-to-chimney transition on all sides.
Assess repair vs. full replacement
Based on the investigation, we determine whether your flashing can be repaired (re-sealed or partially replaced) or needs full replacement. We consider the flashing material condition, mortar joint integrity, and the age of the existing installation to recommend the most cost-effective approach.
Remove failed flashing and repair mortar joints
We carefully remove the failed flashing sections and clean the chimney masonry. If mortar joints are deteriorated, we grind out the old mortar and re-point the joints to create a solid base for the new flashing to be embedded into.
Install new step and counter flashing with proper layering
We install new step flashing woven into the shingle courses and counter flashing embedded into the chimney mortar joints. Each piece overlaps correctly to create a watertight seal that allows both the roof and chimney to expand and contract independently without breaking the seal.
Install chimney cricket if needed
For chimneys 30 inches or wider, or any chimney experiencing water pooling on the uphill side, we build and install a chimney cricket. This peaked diverter prevents water and debris from accumulating behind the chimney, which is the number one cause of chimney flashing failure.
Water test, cleanup, and warranty documentation
We water-test the completed installation by running water over every flashing joint and transition to verify a watertight seal. After full cleanup, we provide warranty documentation covering both materials and workmanship.
Cost of Chimney Flashing Repair in NJ
Chimney flashing repair costs vary based on the scope of work needed and the materials used. Here's what Essex County homeowners can expect:
Re-Sealing Existing Flashing
Sealant and mortar joint repair when flashing metal is still sound
Partial Flashing Repair
Replacing damaged sections of step or counter flashing
Full Flashing Replacement
Complete removal and reinstallation of all chimney flashing
Full Replacement + Chimney Cricket
Flashing replacement plus cricket installation for wide chimneys
Transparent Pricing: Every chimney flashing estimate from R&E Roofing includes a detailed scope of work, material specifications, and a firm price. No hidden fees, no surprises. Call for a free on-site estimate.
Chimney Flashing Materials
Copper Flashing
- ✓Lifespan: 50+ years — the longest-lasting flashing material available
- ✓Develops a natural patina that protects against corrosion
- ✓Premium option ideal for high-end homes and historic properties
Aluminum Flashing
- ✓Lifespan: 20-30 years — excellent balance of durability and affordability
- ✓Lightweight, rust-resistant, and easy to form around complex chimney shapes
- ✓Most popular choice for residential chimney flashing in NJ
Galvanized Steel Flashing
- ✓Lifespan: 15-25 years — budget-friendly option for cost-conscious homeowners
- ✓Strong and durable but will eventually rust once the zinc coating wears
- ✓Good option when paired with regular maintenance and inspection
Lead-Coated Copper Flashing
- ✓Lifespan: 50+ years — combines copper durability with a muted gray finish
- ✓Preferred for heritage and historic homes where appearance matters
- ✓Extremely malleable for tight-fitting installations on older masonry chimneys
Why Essex County Homeowners Choose R&E Roofing
Expert Leak Diagnosis
We trace chimney leaks to their exact source before recommending any repair, so you only pay for what you actually need.
All Flashing Materials
Copper, aluminum, galvanized steel, and lead-coated copper. We match the right material to your home and budget.
Chimney Cricket Installation
We build and install chimney crickets to prevent water pooling behind wide chimneys -- the #1 cause of repeat leaks.
26+ Years Experience
Trusted Essex County roofing contractor with decades of chimney flashing expertise.
Licensed & Insured
Fully licensed NJ roofing contractor with comprehensive liability coverage.
Workmanship Warranty
All chimney flashing repairs backed by our written workmanship guarantee.
Related Services
Roof Flashing Repair
Complete roof flashing repair for valleys, vents, skylights, and all roof penetrations.
Roof Leak Repair
Advanced leak detection and permanent repair for all types of roof leaks.
Roof Repair
General roof repair services for shingles, flat roofs, metal roofs, and more.
Roof Inspection
Professional roof inspections to catch problems before they become expensive repairs.
Soffit & Fascia Repair
Repair and replacement of damaged soffit and fascia to protect your roof edge and attic ventilation.
Storm Damage Repair
Complete storm damage restoration including emergency tarping and insurance support.
Chimney Flashing Repair FAQ
How do I know if my chimney flashing is leaking?
The most common signs are water stains on the ceiling or walls near your chimney, a musty smell in the attic near the chimney area, and dampness or dripping in the attic after rain. You may also see visible gaps between the flashing and chimney masonry, rust stains running down the chimney exterior, or missing and lifted flashing pieces. R&E Roofing offers free chimney leak inspections to trace the exact entry point.
How long does chimney flashing last?
Chimney flashing lifespan depends on the material. Copper flashing lasts 50+ years, aluminum lasts 20-30 years, and galvanized steel lasts 15-25 years. However, the sealant and mortar joints that secure the flashing typically fail much sooner, often within 8-15 years. Regular inspection catches sealant failure before it becomes a leak.
What is a chimney cricket and do I need one?
A chimney cricket (also called a saddle) is a small peaked structure built behind the chimney on the uphill side of the roof. It diverts water and debris around the chimney instead of letting it pool behind it. Building code requires a cricket when the chimney is 30 inches or wider. Even on narrower chimneys, a cricket significantly reduces leak risk and extends flashing life.
Can chimney flashing be repaired or does it need full replacement?
It depends on the extent of damage. If the flashing metal is still in good condition but the sealant or mortar joints have failed, re-sealing is often sufficient ($200-$500). If the flashing itself is corroded, bent, or improperly installed, partial or full replacement is recommended. R&E Roofing inspects the full flashing system and recommends the most cost-effective solution.
What causes chimney flashing to fail?
The most common causes are thermal expansion and contraction (the chimney and roof move at different rates), deteriorated mortar joints where counter flashing is embedded, dried-out or cracked roofing sealant, improper original installation with insufficient overlap, ice dam pressure pushing flashing away from the chimney, and age-related corrosion of the flashing metal itself.
How much does chimney flashing repair cost?
Chimney flashing repair costs in NJ vary by scope. Re-sealing existing flashing runs $200-$500. Partial repair of damaged sections costs $400-$1,000. Full flashing replacement ranges from $800-$2,500 depending on chimney size and material chosen. Adding a chimney cricket brings the total to $1,500-$3,500. R&E Roofing provides free estimates with transparent pricing.
Is chimney flashing repair covered by homeowner insurance?
Chimney flashing repair is typically covered by homeowner insurance when the damage was caused by a sudden event like a storm, fallen tree, or hail. Normal wear and tear, age-related deterioration, and deferred maintenance are generally not covered. If storm damage caused or worsened your chimney leak, R&E Roofing can provide documentation to support your claim.
Water Coming In Around Your Chimney?
Don't let a chimney flashing leak turn into ceiling damage, mold, or rotted framing. Get a free professional inspection and find out exactly where the water is getting in.