Flashing is often the cause of chimney leaks, which is why it should be checked often. It is made of metal, which also makes it vulnerable to moisture. The purpose of flashing is to maintain a watertight seal between the chimney and the roof. The chimney flashing is the metal part of the chimney. The crown is perpetually exposed to the elements and tends to crack over time. Annual chimney inspections are recommended by fire safety experts, and one reason for routine inspection is to make sure the chimney crown is in good condition. The chimney crown also prevents moisture from getting into the chimney system between the flue lining and the exterior of the chimney. This keeps water from continually pouring down the side of the masonry. A chimney crown is typically made of poured concrete, and it extends at least 2 inches over the chimney stack below. Its purpose is to serve as protection against the weather, much like an umbrella. The chimney crown is the component at the very top of the chimney. It’s important that chimney chase covers don’t leak, which is why only professional chimney technicians should install them. A chase cover looks like a lid that fits over a shoebox. The chief difference is that chase covers are for the protection of prefabricated metal chimneys. With a spark guard, can prevent hot embers from starting a fire on your roof or setting fire to other nearby combustibles.Ī chimney chase cover is similar to a chimney cap because it performs many of the same functions, such as keeping rain water from pouring inside the venting system.Helps to prevent deterioration of the flue liner.With mesh, keeps birds and other critters out of your chimney.Stops downdrafts from pulling outside air down your chimney and into your home.Prevents debris such as leaves and limbs from falling inside the chimney.Keeps rain, snow, and sleet from pouring inside your chimney.There are several important functions served by the chimney cap: Chimney CapĪ chimney cap can be chosen for aesthetic beauty, but the main thing is that there is a cap on every masonry chimney. The following is information about the chimney cap, chimney chase cover, chimney crown, flashing, and chimney stack masonry. You can do a better job of maintaining your chimney and avoiding costly repairs when you are familiar with the various parts. Maintenance is important because chimneys are vulnerable to moisture and other potential problems. All of the various parts of your chimney exterior contribute to the safe and efficient operation of your fireplace. A chimney that operates properly makes it possible for you to enjoy fires indoors because it transports toxic fumes outdoors. There is a lot more to the outside of your chimney than meets the eye, and it may even have components you aren’t aware of.
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