Damper caps
Some caps include a top sealing damper that closes off the flue when the fireplace is not in use for a tighter seal than an old throat damper.
Most chimneys in Natrona Heights should have a cap, and a local sweep can fit one that keeps rain, birds, raccoons and leaves out while letting smoke escape. Call (724) 604-6450 to reach a local chimney sweep.
Without a cap, the top of a flue is open to rain, snow, leaves and wildlife. Water that falls into an open flue rusts metal parts, breaks down mortar and leaves a damp, smoky odor in the room. Animals treat an uncapped chimney like a hollow tree.
Caps are made of a lid that keeps precipitation out and wire mesh walls that let smoke and gases pass. The crown seals the top of the brick, while the cap protects the opening of the flue itself.
Choosing a cap comes down to the shape of the chimney and what it vents. Some caps fasten to the flue tile with screws or a clamp, and others mount to the crown and cover all the flues at once. Stainless steel and copper last far longer than galvanized or painted steel, which rusts and streaks the masonry within a few years.
If the problem goes deeper than it first looked, a Natrona Heights chimney sweep may also recommend chimney crown repair or chimney animal removal.
Dealing with this in Natrona Heights, PA right now? Call (724) 604-6450 to reach a nearby chimney sweep.
Call nowPutting on a cap is quick work, but measuring and checking come first.
Before the cap goes on, the flue is checked for animals, nests and blockages. If birds are nesting, the timing of the job may change.
The sweep measures the length, width and height of the flue tile or crown. The cap needs enough height above the flue for smoke to escape freely.
The cap is matched to the chimney, the appliance and the look of the house. Wood, gas and oil flues can each call for a different cap.
A cap needs a solid base, so the crown and tile are inspected. Small cracks can be sealed before the cap goes on.
A single flue cap is tightened onto the tile, and crown mount caps are fastened into the masonry. Raccoons can pull off a loose cap, so it is set tight and checked before the sweep leaves the roof.
Some caps include a top sealing damper that closes off the flue when the fireplace is not in use for a tighter seal than an old throat damper.
Outside mount caps that span the whole top of the chimney keeps several flues covered under one lid.
A simple cap for one flue extending above the crown is the most common type on brick chimneys.
Mesh sides keep birds, squirrels, raccoons and bats out of the flue while letting smoke and gases out.
Stainless steel holds up to weather and flue gases for many years which makes them worth the higher upfront cost.
An old cap can fail in ways that are easy to miss from the ground. Rusted mesh lets animals in, a loose base lets wind tip the cap, and rust streaks down the brick show the metal is breaking down. A replacement in stainless steel or copper usually ends the cycle of rusting caps.
In Natrona Heights, a missing cap is often noticed only after a nest or a wet firebox appears. It helps to tell the sweep whether the chimney has one flue or several and what is vented through it. Debris that fell in while the cap was off may need to be cleared out first.
A spark arrestor is the mesh screen on a chimney cap that stops burning embers from leaving the flue and landing on the roof or nearby trees. Fire standards like NFPA 211 call for mesh openings of roughly three eighths to one half inch, which balances ember control with airflow. Local fire rules in dry or wooded areas may require a spark arrestor.
Spark arrestor mesh needs occasional cleaning, because creosote and soot can build up on the screen and slow the draft. A smoky fireplace after years of good draft can point to a clogged screen. A Natrona Heights sweep can clean the mesh or replace a screen that has rusted through.
Chimney caps in Natrona Heights take a beating from wind, storms and the freeze and thaw cycles that come with the seasons. In Natrona Heights and places nearby like Brackenridge, Tarentum, Lower Burrell and Arnold, squirrels, raccoons and birds treat open chimneys as easy shelter, and a good cap pays for itself by keeping water and animals out of the flue.
For chimney cap installation in Natrona Heights, PA or nearby towns like Brackenridge, Tarentum, Lower Burrell and Arnold, call (724) 604-6450 to reach a chimney sweep who covers your street.
Cold winters keep fireplaces, wood stoves and oil burners working for half the year or more. Masonry takes the worst of it from the freeze and thaw cycle: rain and melting snow soak into the crown and joints, then freeze and push them apart, and each winter widens the cracks a little more. Nor'easters drive rain sideways into flashing and mortar that looked fine in summer. That is why chimney cleaning in Natrona Heights is usually booked in the fall, before the first cold night.
Small chimney problems caught early usually stay small repairs.
Chimney sweeps in Natrona Heights know the chimneys and fireplaces common in local homes.
Ask the sweep about the cause, the options and the estimate before work starts.
More questions? Call (724) 604-6450
Repairing the concrete slab that caps the top of the chimney, so water stops soaking into the masonry from the top.
Learn moreRemoving birds, raccoons, squirrels and nests from the flue, smoke shelf and damper, and cleaning up what they left behind.
Learn moreSwapping out the metal cover on a framed chimney chase before rust and leaks damage the framing below.
Learn moreTracing chimney leaks to the real entry point and sealing it, before the water rots framing or ruins the flue.
Learn moreLooking for something else?
See all chimney servicesCall (724) 604-6450 for a local chimney sweep in Natrona Heights and nearby towns.
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