Crown Repair & Rebuild

Moisture can be a real blessing to our lawns and gardens, but it’s certainly not good for our chimney systems. That’s why each chimney has a cement slab, known as a chimney crown, at its top. The crown works to block out moisture, debris, and animals by closing off the chimney from the outside. But chimney crowns don’t always effectively do their job. Here are the most common reasons that chimney crowns fail:

chimney crown repair in Henniker NHWater-Damaged Crowns

Even though properly built crowns are designed to be durable and resist damage, rain, snow, sleet, and freezing and thawing temperatures can eventually cause chimney crowns to crack and deteriorate, rendering them ineffective at keeping moisture out. In fact, damaged crowns are often responsible for chimney leaks. As the cracks develop and spread, moisture begins to wick down into the chimney system, where it can do serious damage to the metal or clay flue liner, the damper, and the firebox itself.

Poorly Built Crowns

Even though the chimney crown may seem simple enough, a lot goes into the construction of a quality crown.

  • Thickness – If it’s to withstand the rain and moisture, season after season, the chimney crown should be 2 inches thick at its thinnest point. Anything less than that will deteriorate much more quickly.
  • Shape/Slope – A quality constructed crown should be angled on the top so that water runs off of it, as opposed to settling on its surface. If not properly angled, water can puddle and will eventually wear through the crown.
  • Overhang – We’ve seen many chimney crowns end right at the edge of the masonry chimney stack. This type of design drops water directly down into the masonry chimney stack and onto the flashing, where it can do extensive damage and lead to major leaks. A properly built crown will extend past the masonry chimney stack by at least 2 inches.
  • Material – If you want a chimney crown that lasts, it should be constructed of concrete and reinforcing metal or steel mesh. If constructed of regular mortar, it’s only a matter of time before cracks develop and the crown deteriorates.

Let Us Repair Or Rebuild Your Crown The Right Way!

Was your chimney crown improperly built? Is it cracking and crumbling? Give Black Moose Chimney & Stove a call! We specialize in crown repairs and rebuilds! If your cracks are minor, but the crown is still in great overall condition, we can use a professional product to seal the cracks and prevent them from expanding. If you need an entirely new crown, we can help with that, too! Our masons know what goes into the making of a quality, long-lasting chimney crown, and will leave you with durable, beautiful, effective results. For more information or to request an appointment to have your chimney crown inspected, please call us at (603) 525-7905 or click here! We look forward to working with you!

Let us help you turn your masonry chimney from an eye sore into a beautiful focal point with our chimney rebuilding expertise. You’re going to love the fresh look!

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)