Proper Installation of Chimney flashing is one of the most important steps in protecting your home from water infiltration. Flashing is a system of sheet metal pieces carefully installed where your chimney meets the roof deck. Its purpose is simple but critical: to divert water away from vulnerable areas so it runs safely down your roof and into the gutters—without seeping into the walls, attic, or masonry.
At GMT Home Services, our chimney professionals install, repair, and replace chimney flashing with proper waterproofing techniques to protect your home for decades to come.
A chimney is essentially a vertical surface breaking through your roof. That joint is naturally one of the most vulnerable points on any home. Without properly fitted pieces like base, counter, and cap flashing, water can seep around the chimney and into your home. Over time, leaks don’t just stain ceilings—they rot roof framing, weaken mortar joints, and even compromise the chimney itself.
Stop Chimney Leaks Before the Next Nor’easter Hits Fairfield County
Heavy coastal storms and snowmelt can overwhelm old flashing. Don’t wait for water stains to show up on your ceiling. Call GMT Home Services today for expert chimney flashing installation in Fairfield County, CT, and keep your home dry this winter.
Prevents Water Intrusion: Proper flashing installation creates a waterproof seal around the chimney where shingles alone can’t protect.
Protects Structural Integrity: When flashing fails, water flows under surrounding shingles and into the roof deck, causing rot, mold, and damage to brick or masonry.
Extends Roof Life: Flashing works alongside shingles, gutters, and proper slope to divert water safely off the roof.
Avoids Costly Repairs: Installing new flashing now saves you from expensive repairs to the chimney, wall, or roof later.
Protect Your Roof from Ice Dams and Spring Rains in Hartford County
Connecticut winters are brutal on flashing, and when the ice thaws, leaks follow. Our certified chimney professionals provide new flashing installation and chimney leak repair in Hartford County, CT, so your roof stays watertight all year long.
Every flashing system we install is tailored to the roof and chimney it protects. Here’s what you can expect from GMT Home Services:
Installed in layers with each shingle course along the chimney’s vertical surface.
Sits at the bottom of the chimney to direct water away.
Installed into mortar joints or against masonry walls to cover base flashing.
Diverts water into gutters instead of letting it run behind siding.
Used for flat, long walls where a single piece of sheet metal prevents water intrusion.
Covers chimney caps, vents, or flues to keep water out of vulnerable areas.
Whether you have an asphalt shingle roof, a metal roof, or vinyl siding around the chimney, we customize the flashing system for proper installation and long-lasting waterproofing.
Don’t Let Summer Storms Soak Your Roof in New Haven County
Sudden downpours and humid weather put extra stress on old flashing and surrounding shingles. Get ahead of the damage with professional chimney flashing repair and installation in New Haven County, CT. Call GMT Home Services now before the next storm rolls through.
Unfortunately, not every flashing job is done right. Some contractors simply slap caulk or aluminum flashing around a chimney, leaving gaps where water can leak. Common mistakes include:
Our team avoids these mistakes by following proven roofing practices that keep water flowing safely off your roof.
Installing or repairing chimney caps to block water and debris.
Fixing water damage around the chimney.
Applying sealants for extra protection.
Ensuring water flows away without pooling or leaking.
At GMT Home Services, chimney care is at the heart of what we do—not just roofing. With 15+ years of hands-on experience and certifications from the Chimney Safety Institute of America (CSIA) and the National Fire Protection Association (NFPA), we specialize in keeping the chimney-to-roof connection watertight.
Chimney-Specific Expertise: We understand how masonry, mortar joints, and chimney movement affect flashing performance.
Precision Flashing Installation: Base, step, counter, and cap flashing are cut into mortar joints and layered correctly for a durable, watertight seal.
Built for Connecticut Weather: From heavy snow to driving rain, our chimney flashing systems are designed to withstand years of seasonal stress.
Honest & Transparent: You’ll always know the cost upfront, with no hidden fees.
Long-Term Protection: Proper chimney flashing prevents leaks, preserves masonry, and safeguards your entire home structure.
Don’t wait for water to stain your ceiling or weaken your chimney. Protect your home with expert chimney flashing installation from GMT Home Services. Trusted roofing professionals for chimney flashing, waterproofing, and leak repair in Connecticut.
It involves layering base, step, and counter flashing. Each shingle overlaps step flashing, while counter flashing is set into mortar joints or the chimney wall to cover the base.
Not always. If it’s intact and sealed, a roofer may only need to reseal it. But if it’s pulled away, rusted, or leaking, replacement is usually best.
Yes. It requires special shaping and fastening with roofing nails or screws, plus caulking seams to prevent leaks.
Skipping step flashing, not cutting into mortar joints, using caulk alone, forgetting kickout flashing, or bending pieces incorrectly.
With quality materials and installation, 20+ years. Severe weather or chimney movement can shorten its lifespan, which is why regular inspections are important.
Most Connecticut homeowners spend \$300–\$800, depending on chimney size, roof pitch, and materials. We provide free, upfront estimates so there are no surprises.
Some use cheaper materials or skip steps, which lowers cost but risks leaks. We use quality sheet metal and proper installation for long-lasting protection.
