Protecting Your Chimney from Water Damage

Chimney Cap Repair & Installation in Amherst, NHYour chimney is a durable structure built to withstand the destructive nature of wind, fire, and ice. But weather can take its toll even on the toughest chimneys. The constant exposure to harsh weather conditions, like wind, rain, and snow, can accelerate its deterioration. And water is its greatest threat. It takes vigilance to prevent excessive damage and costly repairs.

Install a chimney cap

Chimney caps are an inexpensive way to help protect your chimney from water damage. But its position on top of the stack makes it more prone to wind and other weather-related damage. New chimney caps have a wire mesh screen that not only helps prevent water intrusion but will also keep small animals, rodents, and debris out of the flue. It also helps in maintaining a proper draft, and a spark arrestor feature helps prevent hot embers from flying onto the roof.



A damaged chimney cap will leave your flue unprotected and should be replaced as soon as possible. They are available in many different aesthetic-pleasing styles and materials, including galvanized steel, copper, stainless steel, and more.

Check your chimney flashing

The chimney flashing seals the gap between the chimney and your roof, preventing rain from running down the interior walls of the chimney. If the flashing is not correctly installed, it can become loose, allowing water intrusion. The flashing should be inspected regularly for signs of wear like warping, rusting, and other damage. Noticing water stains on the ceiling and walls near the fireplace is indicative of a flashing problem. The problem should be corrected as soon as possible to avoid damaging the interior masonry.

Chimney Masonry Repair in Concord, NHRepair Damaged Bricks

The bricks used to construct the exterior of the chimney have a hard-outer shell for moisture protection. But years of pounding rain, sleet, and hail will eventually cause tiny cracks in its surface. And since bricks are porous, they absorb water just like a sponge. Moisture also causes the mortar to erode, creating gaps in the joints. The water will continue to damage the chimney until repaired. You may even notice crumbled brick pieces lying on the ground. When this occurs, there is also an increased risk of fire and exposure to carbon monoxide poisoning.


Waterproofing will not only reduce the need for frequent chimney repairs but also extend the lifespan of the chimney. But waterproofing is only effective when any brick or masonry damage has been repaired. For best results, use a water-based permeable sealant so that it will allow the masonry to breathe. The sealant will need to be re-applied every 5 to 7 years to maintain its water-resistant strength.

Chimney Inspection

One of the best ways to protect your chimney from water damage is with an annual inspection. It’s during these inspections that homeowners can often uncover problems when they are minor so they can be resolved before turning into major repairs.

First Thing

John RantaJohn Ranta
17:01 22 Mar 24
They arrived on time, worked quickly and showed me the results. Prfessional throughout. jr
william greenwilliam green
23:21 14 Mar 24
Really helped me out can't say enough good things highly recommend!!!! The young man that came to my home was very knowledgeable and friendly great attitude all around answered all my questions and left me stress free best of all left no mess.🤙🏻🤙🏻
Michael Dell'OrtoMichael Dell'Orto
18:39 14 Mar 24
Jaime ConleyJaime Conley
17:13 14 Mar 24
Sarah GilliattSarah Gilliatt
01:46 13 Mar 24
A very thorough and careful job done! Thank you.
Larry CookLarry Cook
15:11 07 Mar 24
I wanted to give 5 stars but they are very busy which meant I had a good wait for both the inspection/cleaning, then for a quote on repairs and then for the repairs. Their prices seemed a little high to me but I have nothing to compare with as they were highly recommended by someone I trust and other companies had plenty of negatives reviews which kept me from getting additional quotes. I am happy with the work and they promptly returned to fix a mistake that had been made. Chris the inspector, Jennifer in the office, and Alex and his repair crew were all pleasant and took the time to answer all of my questions. Alex and his crew even took their shoes off (it was winter) before entering my house without even being asked! So if you are not in a rush and want to ensure you chimney is as safe as possible then I think you'll be happy with Black Moose.
Rebecca DeFuscoRebecca DeFusco
22:35 21 Feb 24
After a recent sweep of our chimney, it was discovered that our flue tiles were cracked. Black Moose techs were hard working, detail oriented and professional! Nice jobs guys! See you next year for my cleaning!
Karen CKaren C
14:52 14 Feb 24
Excellent I highly recommend Black Moose Chimney and Stove; Kelly and Liam are awesome, they did a great job. Extremely professional, arrived early, went through everything with a fine tooth comb ensuring pellet stove was thoroughly cleaned. They also were respectful of my home, conscientious and cleaned up after themselves. Made sure stove worked prior to leaving and told me to call promptly if anything came up afterward. Will definitely use them again.
Denise ClarkDenise Clark
16:32 31 Jan 24
We've had Black Moose clean our chimney for a number of years.But recently, we had an emergency situation at our home involving our chimney & oil furnace flue, which was caked full of soot from a malfunctioning furnace. They came & cleaned out both flues in no time, even going up on the roof with snow on it! They cleaned up after their work in the interior rooms where the oil furnace and the woodstove are located. Great work. Reasonable prices. Very nice people. You can't go wrong with Black Moose.
Joe GJoe G
18:30 24 Jan 24
Goods: The technicians know their business, very efficient in cleaning/inspection along with cleaning up after the 'dirty work'.Others: Communications could be more effective. Despite early coordination about scope of work (multiple flues within same chimney) the estimate provided did not reflect this and the final invoice was significantly more than the estimate provided.Quote for follow-on chimney relining was significantly more than that offered by other companies in the area (and far more than neighbors experienced for similar work accomplished by other companies)