I have rebuilt and repaired hundreds and hundreds of chimneys over the years and I've seen it all. From the surprising things water does, to the effects of weather on masonry above the roof line, to the latest chimney repair products - it has been 20+ years of study and observation to gain a mastery of it all. With such broad experience, I can confidently say "Whatever your chimney problem, I will solve it."
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There are times when a chimney's damage is so advanced it warrants tearing it down to the roof line and starting over. When this is necessary, I carefully match the bricks and mortar to the existing building.
Our area's winter weather is hard on chimneys. It can be 0 degrees on the outside of a chimney but a 100 degrees on the inside putting stress on the materials. Cracked or eroded mortar joints are an entry point for water and require maintenance to properly waterproof the chimney. I custom mix pointing mortar to match or exceed the performance of the existing mortar using portland cement based mortars, lime based mortars, or a blend to best suit your masonry assembly.
A hole was cut in your roof to install the chimney. A chimney's flashing stands between the elements and the inside of your house. Improperly flashed chimneys (which are common) permit water into your house and require maintenance. A properly flashed chimney does not require maintenance, except when your roof is replaced. The materials and techniques I use to flash chimneys will last until your next new roof.
The most common chimney repair is related to a cap/crown failure. Once water enters your chimney top, it is the beginning of the end. I install 4" reinforced concrete caps with an overhang. It's like having a section of sidewalk on top of your chimney to protect it from the weather. My customers will never need to install another cap.
If your chimney is unlined or the clay liner fails, the best remedy to prolong chimney life is to install a stainless steel liner. A liner protects the masonry from absorbing the corrosive flue gasses that cause decay from the inside out. I will size and install the highest quality 316Ti stainless steel flue liner and components appropriate for any heating appliance.
A chimney that is trapping moisture needs to be sealed, ventilated, or both. I will recommend and install the appropriate sealer and ventilation necessary to dry out your chimney. Left untreated, a wet chimney cycling between freezing and thawing will eventually blow apart requiring a major repair to replace the interior and exterior chimney components.