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Expert Chimney & Vent Services in Rochester, NH
Gilmartin Chimney and Vent has been serving residential customers in Southern New Hampshire and Maine for nearly 30 years. We are a family-owned and locally operated business committed to delivering certified chimney inspections, cleaning, and repairs with a focus on safety and quality. Our technicians hold certifications from the Chimney Safety Institute of America and we maintain active memberships in the National Chimney Sweep Guild and the Northeast Association of Chimney and Hearth Professionals. We specialize in chimney masonry, stainless steel liners, caps, crown rebuilds, and video inspections while adhering to industry standards set by the National Fire Protection Association.

Serving Rockingham, Hillsborough, and Strafford counties in New Hampshire, along with York County in Maine, we have built a loyal client base through consistent, reliable service and transparent communication. Our team prioritizes customer satisfaction by completing each project professionally, ensuring properties remain clean and safe. We offer senior and military discounts and maintain partnerships with property management firms and real estate professionals who depend on our expertise for accurate assessments during home transactions.
Services
Chimney Repairs Chimney Liners Chimney Caps Crown Rebuilds Chimney Sweeping Dryer Vent Cleaning Pellet Stove Service Video Inspections Real Estate Inspections Cap Installation
Highlights and features
  • We offer nearly 30 years of specialized chimney service experience
  • Our team is certified by the Chimney Safety Institute of America
  • We serve Rockingham, Hillsborough, and Strafford counties extensively
  • We provide Level I-III NFPA-certified chimney inspections
  • We maintain partnerships with local real estate professionals
Associations and certifications
  • Chimney Safety Institute of America
What people say
Outstanding work 100% trust assessments Professional and reliable Reasonably priced Always on time
Services
Chimney Repairs
We specialize in comprehensive chimney masonry repairs, addressing cracks, spalling bricks, and structural issues. Our certified technicians use industry-approved materials to restore chimney integrity and safety. With nearly three decades of experience, we ensure durable repairs that extend chimney lifespan while maintaining property aesthetics.
Chimney Liners
Our Ventinox stainless steel liners ensure safe venting of gases from fireplaces and stoves. We install corrosion-resistant systems that comply with UL 1777 standards. Proper sizing and insulation maximize efficiency while preventing hazardous leaks. This critical component protects homes from carbon monoxide exposure and maintains appliance performance.
Chimney Caps
We install durable stainless steel caps that prevent water intrusion, animal entry, and debris accumulation. Our caps feature secure designs to withstand harsh New England winters. This essential installation protects chimney structures from moisture damage and reduces fire risks by containing sparks effectively.
Crown Rebuilds
Professional crown rebuilds address water damage and structural weakness. We use reinforced materials with proper drip edges to prevent further degradation. Our technicians assess existing damage to determine repair scope, ensuring complete protection against weather-related deterioration that threatens chimney longevity.
Level II Inspections
NFPA-compliant Level II inspections include video assessments of internal components. Required for property transactions, these evaluations identify hidden issues within chimney systems. We provide detailed reports for buyers and insurance providers, ensuring informed decisions about heating system safety and required repairs.
Questions
What areas do you serve?
We serve Southern New Hampshire including Rockingham, Hillsborough, and Strafford counties, plus York County in Maine. Our service area covers both urban and rural locations throughout the region.
How often should chimneys be inspected?
The National Fire Protection Association recommends annual inspections. Regular checkups prevent creosote buildup and identify structural issues, ensuring safe year-round operation regardless of chimney usage frequency.
Do you provide real estate inspection services?
Yes, we offer Level II NFPA-certified inspections required for property transactions. Our detailed reports help buyers negotiate prices and meet insurance requirements with comprehensive chimney system assessments.
What certifications do your technicians hold?
Our team includes technicians certified by the Chimney Safety Institute of America with memberships in the National Chimney Sweep Guild and Northeast Association of Chimney Professionals. These credentials ensure industry-standard expertise.
What chimney maintenance services do you offer?
We provide complete chimney services including inspections, cleaning, masonry repairs, liner installation, crown rebuilds, and cap installations. Emergency repairs and preventative maintenance programs are available for residential clients.
Are there discounts available?
Yes, we offer special pricing for senior citizens and military members. Property management companies receive tailored solutions for multiple unit maintenance requirements across residential portfolios.
Reviews (7)
Georgia McGaughey
Jan 27, 2022 Report
Wonderful husband/wife team and kept me in the loop as I needed a chimney sweep asap. I was treated with respect (I am a new transplant from Georgia to NH and didn't know anything about wood burning stoves) and received great instruction plus now I have a clean chimney. Looking forward to many years of continued service from Gilmartin!
Stephen Kokolis
Jan 22, 2022 Report
Very knowledgable, courteous and prompt. Workers arrived and provided me with a very good overview and diagnostic of my older stove and caught a chimney safety issue that a previous and recent company's visit did not point out or discuss with me. I'm glad I called them as it would have caused serious safety and operating issues. Very professional; I highly recommend them.
Colby
Jan 17, 2022 Report
They are extremely professional! The general man that came out and inspected our wood stove vent and vent for furnace. He was extremely knowledgeable about venting, masonry for chimneys, preventable issues, and even ideas going forward to name a few. I strongly recommend them! Great price on inspections too! (NOTE: I sure as heck wouldnt trust the person posting the one star review.)
Jeff Mason
Jan 08, 2022 Report
I would highly recommend Gilmartin Chimney for any job relating to your chimneys! Brian and his team know their stuff and get the job done right the first time! Wish I had found them 20 years ago!
Jake Moore
Oct 30, 2021 Report
Brian was great! He showed up at our expected time, took pictures to show us what our chimney looks like up above, and kept a clean work space. We will use your services again, thank you!
Kathryn Del Medico
Oct 20, 2021 Report
Gilmartin Chimney was AMAZING!!!! A wealth of knowledge, can-do attitude and took the time to explain options along the way. Would highly recommend.
Mike Pagan
Oct 19, 2021 Report
After noticing dust/lint building up on my siding directly under an exhaust vent I called to see if someone could come take a look. Brian was very accommodating despite his busy schedule. He was quick to diagnose the situation and even went so far as to clean as much of the siding as he could reach. I will definitely be calling again with any future needs.