Before we can install a chimney cap we must make sure that the chimney itself is in good solid condition.
Chimney caps are an important part of any chimney system. They prevent leaves, snow and rain from entering and interfering with the safety and performance of your heating system. Installation of a chimney cap is considered to be a pest control measure because it prevents unwanted critters from entering and building a nest within your chimney or fireplace.
A chimney cap also prevents certain animals or birds from falling into your fireplace where they might be unable to exit. If this becomes the case the critter will dye and at some point start to rot, thus creating a smell/odor that will spread throughout your home.
Chimney caps are made out of several different materials including galvanized steel, stainless steel or copper. The cheapest caps are made out of galvanized steel and their life expectancy is minimal (3-5 years). They also begin to rust almost immediately after installation. I do not advise installing galvanized caps unless the customer is interested in a cheap temporary solution to a continuing problem. Stainless steel and copper caps last 20-30 years and are worth the extra initial investment.
Flue caps are usually installed and attached directly to each flue coming out of the chimney top. Chimney caps cover the entire chimney, encompassing all (single, double, triple) flues including the whole top of the chimney. The best protection for your chimney is a full chimney cap. Cap stiles include the simple “flat” tops, “hip and Ridge” tops or “gable” tops.
Bats were getting into the living space of the house. An inspection of the chimney revealed that one of the flew pipes was damaged thus allowing bats access into the interior of the walls. Since this chimney was not being used I decided to form a sheet metal cover to seal the top.
This chimney flashing was in need of repair to prevent bats from accessing the interior of the attic. The top bricks also had to be repointed to prevent them from falling on someone's head.
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