Leaky Chimney Issues? Don't Wait Before It's Too Late.

Clean Sweep Fireplace Shop is here to help fix your leaky chimney woes!

What are the common causes of a leaky chimney?

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NO CAP OR COVER ON THE CHIMNEY

A chimney that is open to the sky lets rain and snow fall inside and cause that wet campfire smell to permeate the room. It also gives animals and birds opportunities to build nests. Things pile up, and your chimney could be blocked, leaking carbon monoxide into the home.

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DAMAGE TO THE CHIMNEY CROWN

That sloped layer of concrete, the chimney crown, is what keeps water from damaging the mortar in the bricks beneath it. It also seals the gap between the liner and the outside chimney. When it has little cracks, the freeze-thaw effect makes those cracks grow bigger. It’s like losing shingles on the roof. If your crown is damaged, there will be leaks.

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DETERIORATED OR IMPROPERLY BUILT CHIMNEY SHOULDER

The shoulder of the stack, the sloped area on the stack where it transitions from a broad base to narrow, is a common area where the masonry deteriorates and is the cause of leaks, or it is just not constructed well enough to hold off rain and snow. Often it is built without a proper pitch to allow the water to run off, and as a result, it soaks and leaks its way into the chimney.

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DETERIORATING MORTAR & MASONRY

The Chimney Safety Institute Of America says water and your masonry chimney is a dangerous mix. The result of prolonged water contact rusts metals in the stack structure, and the porous masonry holds water that allows mold in warm situations and the freeze-thaw effect when it’s cold breaks down the integrity of your building.

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DETERIORATING MORTAR & MASONRY

The Chimney Safety Institute Of America says water and your masonry chimney is a dangerous mix. The result of prolonged water contact rusts metals in the stack structure, and the porous masonry holds water that allows mold in warm situations and the freeze-thaw effect when it’s cold breaks down the integrity of your building.

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INADEQUATE FLASHING

The flashing is supposed to be the flexible connection between your chimney and roof that lets each side expand or contract without making a gap between them. If the flashing needs to be repaired or replaced, you will see leaks around the chimney.

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RUSTED CHASE COVER

Often when the builders install prefabricated fireplaces, they will install a galvanized chase cover which sits flat on top of the chase. When snow sits on top of it, it weighs it down and allows water to puddle up causing the galvanize chase cover to rust out and allow water to leak into the house. A certified chimney repair company can install a new stainless steel chase cover which won’t rust and is pitched to allow the water to run off.

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THE WRONG CHIMNEY LINER

Your chimney liner must be sized based on the appliance it’s serving, if the flue is too big for the device(s), the flue gasses will condensate. For wood burning appliances, this means excessive creosote build up which can lead to chimney fires and for gas appliances this means moisture build up in the flue system which can cause the masonry to deteriorate and cause the moisture to leak out into the house. We can repair your chimney with the proper liner.

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YOU NEED A CHIMNEY CRICKET

“Cricket” is the term for a water deflector that is installed where the roof rises from the chimney. It is an excellent idea for a steep roof or chimneys more than 30 inches wide. As the rain runs down the roof toward the chimney, the cricket moves the water to the sides and on down to the gutter.

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