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Signs Of An Obstructed Chimney – Chimney Flue Repair

A chimney is designed to safely and effectively remove dangerous fire byproducts produced within the fireplace. When it becomes clogged, it can’t properly perform this important role. Birds’ nests, tree foliage, trash, and other debris can clog your home chimney, making it dangerous to use. Soot and crumbling bricks are also hazardous; if the chimney’s flue is not kept clean, your home is at risk every time you kindle the fireplace. Your home’s structure and age may also play a part in the overall health of its chimney. Determine if there is a blockage in your chimney, or if it needs chimney flue repair, by looking at it yourself or hiring a professional maintenance company.

WARNING SIGNS OF A BLOCKED CHIMNEY

A blocked chimney may be hard to diagnose on your own but there are some telltale signs to watch for. These warning signs include:

  • A smoky smell when burning a fire
  • Falling debris inside the hearth
  • Water streaks inside the flue
  • Excessive soot
  • White residue on the flue walls

WHAT CAN CAUSE A CHIMNEY BLOCKAGE?

There are three main causes of chimney blockages:

  • An excessive build-up of soot or creosote (tar)
  • Birds, squirrels, or other small animals nesting in the chimney
  • The collapse of the internal chimney bricks

INSPECTING THE CHIMNEY

1. Wear a safety mask or goggles for eye protection. Don a pair of gloves and place a handkerchief over your mouth and nose to keep you from inhaling loose, falling soot. Wear a hard hat to protect your head. Chimneys that have not been periodically cleaned may have a lot of debris.

2. Open the chimney’s maintenance door. Typically, it is located outside the house, but check your home’s blueprints for the exact location. Hold the mirror through the maintenance door, facing upward. With your other hand, shine the flashlight on the mirror. Adjust the angle to allow you to see up into the chimney.

3. Inspect the chimney flue from the outside of the building and again from the inside of the fireplace. Open the damper, and shine the flashlight up the walls with the mirror. See if you can insert a broom handle or long stick through the fireplace opening.

4. Feel the heat. When a clogged fireplace is operating, heat and moisture will back up into the home. When the chimney is unused, during summertime, for example, soot from a wood-burning fireplace or rust debris from the metal hood of a gas fireplace can amass. 

CHIMNEY FLUE REPAIR

Clearing a blocked chimney is a job best left for a professional. They have the tools necessary to reach and remove the debris clogging the flue. How quickly and easily the chimney is cleared will depend on how compact the blockage is. To prevent clogs in the future, an annual chimney cleaning is recommended. Regular cleanings will keep your flue clear while also warning you of any potential problems before they turn into costly chimney flue repair. Installing a chimney cap onto the flue can also help limit the number of clogs your chimney experiences. Stopping debris from entering the system in the first place, caps can provide a proactive approach to chimney maintenance.

If you suspect a blocked chimney, contact a professional for assistance. We can diagnose and treat common chimney ailments both large and small. 

WHEN SHOULD YOU REPLACE YOUR CHIMNEY?

When you think about home improvements, your chimney may not be something you think about. However, like many other things in you home, it can break down and need replacement. But how do you know when you should replace your chimney since it’s usually not something on your repair list? Well, it all depends on the condition of your chimney.

Chimneys are very sturdy, but they still need some TLC every now and then to functional properly. And if your chimney is in really bad shape, it might be time for a chimney replacement. To see if your chimney needs fixing or replacement, it’s recommended that you do an annual check, usually in a

season that you won’t be using your fireplace. You’ll also want to check it out after any severe weather like hail storms or hurricanes.

We’ve rounded up a few obvious signs to check for yourself, right after you schedule a professional chimney inspection.

1. A DAMAGED CHIMNEY CROWN

The crown of your chimney is a vital piece of masonry as it protects the chimney from anything that might fall into it (expect for directly above the flue). It keeps out water and weather damage and takes a beating. If it’s injured, the damage can spread down the chimney, resulting in a complete rebuild. It can also degrade and crack due to age, which can be a disaster for the chimney.

2. WHITE SALTS ON BRICKS

White bricks can mean water damage inside the bricks, which pulls out the natural salts and minerals to the surface of the bricks. The white staining can wash off easily, but if comes back, you’ll definitely need to call a professional to come in and help.

3. SPALLING OR SHALING

Spalling is the result of water entering brick, concrete, or natural stone. It forces the surface to peel, pop out, or flake off. Spalling can eventually cause crumbling and destruction of a structure. If you have spalling bricks, it means your chimney is damaged and will need to be rebuilt. You’ll want to call a professional ASAP.

Shaling is also caused by water, but describes what happens to affected tiles. If you notice that tiles or pieces of tiles fall into your fireplace, this is shaling. You’ll definitely need a chimney replacement if you see this!

4. NO CHIMNEY CAP

The chimney cap is like a little hat worn by the flue, to keep debris and water out. Some chimneys don’t have a cap and the ones that do can lose them from time to time. If your chimney doesn’t have one, it’s because it’s most likely sustained some damage at one point. The cap acts as the first line of defense and you’ll want to call a professional for an inspection before any damage gets worse, needing a full chimney replacement.

Avoid Chimney Repair With Removal

When a home has a chimney, and something is awry with it, many homeowners only consider 2 options: fixing it or leaving it in place but declaring the fireplace unusable.

But there are two unexamined options: removing the chimney completely and replacing it with a safer style of chimney.

WHY REPLACE YOUR CHIMNEY?

No amount of repair will make a masonry chimney as safe as a metal one. Masonry chimneys are more likely to fall down and hurt or kill someone during an earthquake than any other part of the house. A full replacement means leaving that risk behind, and still enjoying your fireplace as you always have. It’s all gain, no loss.

WHY REMOVE YOUR CHIMNEY?

Chimney removal is another great option. Why do I call it “great”? Because no chimney means no risk of chimney fires, no risk of a falling chimney, no more place for rain to enter your home, or your hot air to escape in winter.

When having a chimney removed you can opt to remove it below the roof line (if it’s not along on exterior wall), and keep your mantel and firebox area indoors (decorative only). Or you can remove the entire fireplace system. This can create new space in your home, too. The chimney removal cost is often less than repair, and unlike repairs, you’re not going to have to do it again in a few years. No more chimney maintenance for you!

Sometimes a chimney is utilized to vent gas appliances that are connected to the metal flue liner. If your chimney is being used to vent gas appliances such as a furnace, water heater, or boiler, a vent will still need to penetrate the roof to carry the exhaust gases to the exterior after your chimney is gone. This doesn’t mean you can’t remove your chimney. Your chimney removal specialist can help you navigate this safely.

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