Chimney & Fireplace Services in Darien, CT — Protecting Homes Along the Coast
Chimney Inspection
If my fireplace seems to work fine, why should I have it inspected?
Even when smoke rises cleanly, unseen problems can lurk. Creosote buildup, liner gaps, or hidden blockages often develop quietly in coastal chimneys.
A thorough inspection evaluates the flue, liner, smoke chamber, crown, flashing, masonry joints, and damper — not just what you see from the firebox.
Near Tokeneke, a homeowner noticed faint smoke odors during windy evenings. Our inspection revealed early liner separation, which we repaired before colder months made draft and airflow issues worse.
Inspections catch hidden hazards before they become costly or dangerous.
Chimney Repair
Why repair a chimney that looks solid?
A chimney may appear sturdy from the outside, but years of harsh coastal weather can gradually cause cracks, weakened mortar, or hidden rust that threaten its stability and your home’s safety.
Even seemingly sturdy chimneys can have underlying wear. Salt air, freeze-thaw cycles, and moisture slowly erode mortar, bricks, and metal components.
Repairs restore structural integrity, prevent leaks, and ensure safe venting for your home.
On Noroton Avenue, minor mortar erosion and a deteriorating crown were repaired before water infiltration damaged interior walls or affected fireplace performance.
Timely repairs protect both your chimney and the home it serves.
Chimney Cleaning
Do I need cleaning if I only use my fireplace occasionally?
Yes. Even light use produces creosote, and unused chimneys collect moisture, debris, and animal nesting material, restricting airflow and causing odors.
Light usage does not eliminate the risk—routine cleaning ensures optimal performance and helps prevent unexpected issues, protecting your home regardless of how often the fireplace is used.
Cleaning removes buildup, restores draft, and helps identify early flue wear.
A home near Holly Pond Lane hadn’t been cleaned for years. After service, fires burned hotter, smoke vented properly, and indoor air quality improved noticeably.
Regular cleaning keeps chimneys safe, efficient, and reliable.
Chimney Maintenance
What does regular maintenance really accomplish?
Routine chimney maintenance not only prevents costly repairs but also safeguards against moisture intrusion, preserves structural integrity, and ensures your fireplace operates safely and efficiently season after season.
By catching issues like flashing gaps, deteriorating masonry, or damaged crowns early, maintenance helps avoid emergency interventions and keeps your chimney prepared for unpredictable weather, ultimately providing year-round peace of mind.
Near Goodwives River Road, routine maintenance revealed early flashing gaps. Correcting them prevented water intrusion during the next heavy storm.
Consistent maintenance ensures predictable chimney performance year after year.
Level 2 Chimney Inspection
When should I consider a deeper inspection?
Level 2 inspections are recommended after storms, home sales, or appliance upgrades. Using cameras, we examine internal flue areas that standard inspections can’t fully reveal.
These thorough evaluations use specialized tools and cameras to reveal hidden issues inside the flue, giving homeowners clarity and confidence about their chimney’s true condition and helping prevent unexpected problems down the line.
Near Darien Harbor, a homeowner requested a Level 2 inspection before selling. The camera revealed a hidden obstruction that was removed and documented, ensuring a smooth transaction.
Level 2 inspections provide full visibility and confidence when conditions change.
Chimney Crack Repair
Are small cracks worth fixing now?
Even the smallest cracks can be early warning signs, allowing moisture to enter and gradually weaken the chimney structure; in Darien, prompt repairs help preserve both function and appearance, especially given the area’s harsh weather and salt exposure.
On Baywater Drive, minor mortar cracks were repaired and the crown sealed, preventing moisture infiltration and draft problems before they escalated.
Addressing cracks early avoids bigger, more costly repairs.
Chimney Leak Repair
How can I tell if my chimney is leaking?
Subtle signs often give away a leaking chimney—look for stains on walls or ceilings near the fireplace, rust on damper components, or a musty odor that lingers indoors.
These symptoms typically point to moisture intrusion, which is most commonly traced to compromised crowns, faulty flashing, or missing caps.
Catching these clues early and addressing the underlying issue promptly can spare your chimney and home from costly water damage, ensuring the entire system remains in optimal condition for years to come.
Near Hillside Avenue, sealing the crown and repairing flashing resolved persistent interior moisture issues that previous roof work hadn’t corrected.
Early leak repair protects both your chimney and your home from water damage.
Chimney Cap Installation
Is a chimney cap really necessary here?
Absolutely—a chimney cap is an essential safeguard, especially in regions like ours where storms and wildlife are common.
Without one, your chimney is vulnerable to water damage, animal entry, and debris accumulation, all of which can compromise both safety and efficiency. Installing a quality cap offers year-round peace of mind by preventing these intrusions and supporting the overall integrity of your chimney system.
A waterfront property on Long Neck Point Road solved repeated bird intrusions after installing a stainless-steel chimney cap, improving airflow and protecting masonry.
A properly installed cap safeguards the chimney and supports long-term performance.
Best Chimney Care in Darien
Every chimney in Darien ages differently, shaped by location, exposure, and construction style. Most issues remain manageable when they’re identified early and addressed with steady care. With over 12 years of experience, our CSIA-certified professionals follow NFPA standards while providing inspections, repairs, cleaning, maintenance, and installation services—helping Darien homes stay safe, warm, and efficient year after year.
Honest Feedback from Our Clients
EXCELLENT Based on 356 reviews Posted on Daniel JacobTrustindex verifies that the original source of the review is Google. GMT Chimney Services did an outstanding job installing a new liner in my chimney. Their price was nearly half of what other companies quoted, and the work was excellent. My chimney wasn’t drafting correctly, which caused my water heater to break. After the liner was installed, the issue was completely resolved. Highly recommend for their fantastic work!Posted on Gary SandersonTrustindex verifies that the original source of the review is Google. Outstanding service with Joe he was very helpful and I would recommend gmt and JoePosted on Kevin HealyTrustindex verifies that the original source of the review is Google. We had Joe work on a gas fireplace in our new home. He was prompt, polite, and a pleasure to deal with. I would absolutely use this company again and felt he went above and beyond to assist usPosted on josh aTrustindex verifies that the original source of the review is Google. 3.5 stars Not the worst not the best experience.. the guys that came and did inspection were great and knowledgeable, the guys that came and did the liner were also great.. Juan that came to check out my fireplace and put on the caps was excellent.. the guys that came and did the pointing, and outside work did ok work but didnt communicate with us... never rang doorbells or gave us calls, not good communication.... this comapny expect you to be home almost at all times says they will work with you in times so, scheduled a day to come work and needed someone to be home wife took day off and they tried to tell us no one was home didn't even knock or ring door bell... just left tried to tell us no one was home and that they rang door bell and knocked.. we have cameras and ring door bell and wife took day off.. one week goes by no calls nothing gave us 30 min notice called abut 9a.m to show up around 930... again the workers were all pretty good but the communication between them the lady in the office and home owners should be better.. she Called and asked for payment job wasn't complete.. caps were not install.. Juan came out again was great did what he had to do and bill was paid.. I'd love to use them again for a cleaning because the work was ok and some of the guys doing the work. But they need to realize that people work for a living and cant be home at all times and some of the workers and the office need to be able to communicate with the home owners and possibly each other a bit better.. the pricing was average better then some others and work was overall ok.. if your someone that can be home often this company will be perfect for youPosted on MariaTrustindex verifies that the original source of the review is Google. Joe was fantastic and very quick! Looking forward to using this service again!Posted on Toby CarotenutoTrustindex verifies that the original source of the review is Google. Very good service, installed a liner in a few hours. Very professional. Would use again!Posted on saikiran sikaTrustindex verifies that the original source of the review is Google. Nice workPosted on Ravi GopieTrustindex verifies that the original source of the review is Google. Joe came to check my fireplace since I wanted to make sure I was good for the season before lighting it. He did a wonderful job of explaining that the fireplace was safe to use this year and advised me of when to contact them for a cleaning. He checked the firebox, and explained what was happening in the flue. I will certainly be calling GMT again for my future cleanings because of this interaction. Joe was friendly and warm, and did a great job explaining how to use the fireplace.Posted on אילן חרוביTrustindex verifies that the original source of the review is Google. Great service! Joe is a real professional. Very thorough and with a lot of patience. Recommend with all my heartPosted on Krushna PatiTrustindex verifies that the original source of the review is Google. I would highly recommend GMT services. Joe is not only very professional and knowledgeable as well as respectful of time. The fact he got the job done within minutes shows how experienced he is.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

Service Areas
We provide services across multiple areas in the Connecticut, serving both residential and commercial customers. Please check our service area map or contact us to see if we cover your location.


