We Fix Leaky Chimneys

Unfortunately, chimney leaks are a common issue that often go unnoticed until significant damage has been done. Understanding the cause of chimney leaks, their dangers, and how to prevent them is crucial for maintaining your home’s integrity and avoiding costly repairs or rebuilds down the road.

Causes of Chimney Leaks

Damaged or Missing Chimney Cap: The chimney cap keeps rain, snow, and debris out of the chimney. Over time, caps get damaged or even go missing, allowing water to enter the chimney directly. This leads to moisture buildup, resulting in leaks.

Cracked Crown or Worn Flashing: Flashing is a metal barrier that is used to seal the gap between the roof and the chimney. When flashing gets cracked or corroded, or if it’s improperly installed, water can seep through the gaps into your home. This is one of the most common causes of chimney leaks, especially in older homes.

Deteriorating Mortar Joints: The mortar joints between the chimney’s bricks can deteriorate due to weathering and age. Cracked or crumbling mortar allows water to penetrate the chimney’s structure, leading to leaks and potential damage to the surrounding walls.

Spalling Bricks: Spalling occurs when moisture inside the bricks freezes and expands, causing cracking and flaking. Spalling weakens the chimney’s structure and creates openings for water infiltration, leading to leaks.

Poorly Installed Liner: The chimney liner protects the chimney’s interior walls from heat and corrosion. If the liner is improperly installed or damaged, moisture can seep into the masonry, leading to leaks and structural issues.

Condensation: Condensation occurs when warm, moist air from inside the home meets the cooler surface of the chimney. This is particularly common in older chimneys without proper insulation or homes where the chimney isn’t used regularly. Over time, this moisture leads to leaks and water damage.

Dangers of Chimney Leaks

You might think that a bit of water isn’t a big deal, but water leaks pose serious risks to your home and health.

Structural Damage: Water infiltration can weaken the chimney’s structural integrity, leading to cracks, brick spalling, and even collapse in severe cases.

Mold and Mildew: Leaks create the perfect breeding ground for mold and mildew. These fungi can spread throughout the home, causing unpleasant odors and potentially severe health issues, particularly those with allergies or upper respiratory conditions.

Interior Damage: Water from chimney leaks can damage your home’s interior, including walls, ceilings, and flooring. Stains, peeling paint, and warped wood are common signs of water damage caused by a chimney leak.

Fire Hazard: Moisture inside the chimney can weaken the mortar and bricks, increasing the risk of a chimney fire. Additionally, water can damage the chimney liner, reducing its ability to contain heat and combustion gasses, leading to a dangerous fire.

Preventing Chimney Leaks

They say an ounce of prevention is worth a pound of cure, and that’s true with chimney leaks. Here are some tips to keep your chimney in great shape.

Install or Replace the Chimney Cap: Ensure that your chimney has a properly fitted and durable chimney cap. If your cap is damaged or missing, replace it promptly to prevent water from entering the chimney.

Inspect and Repair Flashing: Regularly inspect the flashing around the chimney for signs of wear or damage. If you notice cracks or gaps, have the flashing repaired by a professional to prevent water from seeping in.

Maintain Mortar Joints: Get a professional to inspect the mortar joints regularly. If they notice signs of crumbling, consider repointing the chimney to remove the damaged mortar and replace it with new.

Apply a Sealant: Apply a water-repellent sealant to the chimney’s exterior to protect the bricks from moisture absorption. This can prevent spalling and reduce the risk of leaks.

Regular Inspections: Schedule annual chimney inspections by a trained professional. Regular inspections can identify potential issues before they become serious problems, allowing you to address them promptly.

Consider Chimney Relining: If your chimney liner is old or damaged, consider getting relined. A properly installed liner will protect the chimney’s masonry from moisture and improve the efficiency of your stove or fireplace.

Mercer County Chimney Service Can Help

We’re the most trusted chimney sweep in Hamilton, NJ, and Mercer County. Our technicians are licensed and insured and can help prevent or repair chimney leaks or any other problem you may have. Contact us today!