Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Emergency services offered
"Did what I wanted, and helped us to check out different pellet stove really good job."
+19
Serving Derry, NH and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
"I canâ t say enough about this company. Our chimney separated from our house and we needed a repair. They also installed a Wood stove on Seanâ s advice and it was the best decision we ever made. We wish we had done it sooner - we have electric heat and this cut our bill more than 1/2 of what it was. Also, I have never worked with a contractor who was so available and who called back right away. Sean walked us through the projects every step of the way, we found his prices to be fair in comparison to other companies and heâ s insured. I have and will continue to highly recommend Sean to anyone who needs chimney repair or a wood stove install."
Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2010
Emergency services offered
Warranties offered
"Also installed and cleans both my wood stove and oil furnace chimneys"
Serving Derry, NH and surrounding areas
Approved
Free estimates
Credit card accepted
Offers commercial services
"Josh arrived fully prepared to clean my gas fireplace and chimney. He explained everything clearly, was meticulous about cleanliness, and solved an unexpected issue with ease. He relit the pilot light and explained everything to me as he went along. Based on Josh’s work, I can highly recommend Ashguard to care for your fireplace."
+6
Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
"Duran removed my old gas fireplace, ran a new 6-inch insulated liner down the chimney, (which was not easy, the flue needed to be opened up a bit in certain spots). He rebuilt and repointed my upper chimney, waterproofed it, and installed an amazing new wood burning fireplace, that we are loving! He came out to the house, estimated the job for free. His price was thousands less than the competitors (others charged $250 just to come out and estimate) Duran was professional, honest, clean, hardworking and affordable. If you're getting chimney work done, you are crazy if you don't call this guy. I highly recommend. R"
+21
Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"Al came out initially on time (early actually!) was exceptionally professional and gave a tiered quote on work that "needs" to be done and "could" be done with fair pricing. We scheduled the work for a later date and Al returned and did a fantastic job! He was punctual (again) and efficient-completing all the agreed upon work in a timely manner. He also plugged a hole in the back of our fireplace we didn't know about until we removed the wood burning stove and filled extra cracks on the chimney after capping it. I would definitely hire him again and have even referred him to some friends and relatives... 5+ stars from a very happy customer!"
+36
Serving Derry, NH and surrounding areas
Approved
In business since 2006
Free estimates
Offers commercial services
"It went extremely well. Jim was wonderful to work with, he was professional, respectful, neat and just a pleasure to deal with. This was a hard spring for contractors with all the rain and Jim did an awesome job of keeping us informed as to when he would be available to start the job. Once here he went above an beyond doing an exceptional job on our chimney. We need some work done on our front steps and Celtic Masonry will be the one doing it for us. Would not hesitate to give him an outstanding recommendation."
+13
Serving Derry, NH and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Sean and Alan were good. They pointed and flashed the chimney the same day and left."
+7
Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
"I needed a gas fireplace serviced and SkyVent was very prompt in setting up a convenient appointment for just a few days later. George was prompt in showing up for the appointment and performed the job efficiently and quickly. He was easy to communicate with and did a great job."
+7
Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Credit card accepted
"very professional I highly recommend Three Brothers Masonry; they showed up when they said they would, and they got the job done in perfect timing."
+2
Start with a professional inspection. If damage is limited to a few bricks or the crown, a targeted repair helps keep costs and disruption to a minimum. Severe leaning, widespread mortar failure, or major fire damage usually signals it’s time for a complete teardown and rebuild. Your contractor will outline both price tags, but remember that rebuilding a failing stack is often cheaper than repeated patch jobs and the water leaks or fire hazards they allow.
Cracks provide water with an easy path into the masonry, weakening the bricks and mortar and increasing the risk of collapse or fire. Gaps can also let hot gases and sparks escape into attic spaces. Call a chimney pro as soon as you see cracking so they can seal small joints or recommend a larger rebuild before minor damage turns into a costly emergency.
Smoke rolling back into the room often indicates a blocked flue, a broken damper, or a drafting issue. Have a sweep inspect the damper, flue liner, and any obstructions right away. Most fixes involve clearing debris, repairing the liner, or adjusting the damper so the fireplace pulls air correctly. Don’t light another fire until a professional pinpoints the cause and confirms your system is venting safely.
Most policies cover chimney repairs caused by a sudden, covered event, such as lightning, a fallen tree, or a house fire. They won’t cover damage that stems from neglected maintenance or everyday wear. Review your policy or contact your agent before scheduling work to determine what documentation your insurer requires and what costs you will be responsible for.
Component life spans vary. Clay tile or cast-in-place liners last close to 50 years, while stainless-steel liners last 15 to 20 years. Mortar requires attention every 25 to 30 years, while crowns last 50 to 75 years. Use these numbers as a maintenance roadmap: schedule regular inspections, budget for future upgrades, and replace parts before age-related cracks develop into more significant problems.
From average costs to expert advice, get all the answers you need to get your job done.
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