What Are Some Common Causes of Leaks in and Around the Chimney?

11/24/2021 (Permalink)

Blog Summary: SERVPRO of Media shares five reasons why the chimney of a home in Media, PA, may be leaking.

The water damage restoration technicians at SERVPRO of Media are committed to helping homeowners recover from water damage. A small roof leak, if it goes unnoticed, can expand into a major water damage disaster costing thousands of dollars or more to repair.

The chimney is a large opening in the roof whose purpose is to provide appropriate ventilation for the fireplace. Also, the chimney must protect the home from the outside elements. When correctly designed, installed and maintained, the chimney will perform its function well. Smoke will be directed out of the home and away from the roof. Rain, sleet, and snow will be kept out of the house. The occupants of the residence will be safe, warm, and dry.

If moisture appears around the chimney on the inside of the home after rain or snow, the chimney may have a leak. A wet spot on the ceiling in the vicinity of the chimney is a telltale indication of a water intrusion. A small leak in or around the chimney over an extended period of time can lead to a large water damage disaster. By understanding the dynamics of a chimney leak, Newtown Square, PA, homeowners will know where and when to look for a leak and can prevent a potential disaster. When a leak is discovered, trained professionals can inspect the chimney, identify the source of the leak, and make repairs to ensure the issue is resolved and the chimney is functioning properly. Listed below are five common causes of water leaks in or around the chimney.

1. Rain

One of the most common issues with chimneys is rain leaking through the top of the structure. While several reasons can account for this water intrusion, the most common cause is a cracked, malfunctioning, or missing chimney top cap. A water intrusion resulting from a faulty chimney cap puts the chimney and structure of the home at risk. The moisture can cause the damper to rust, resulting in chimney deterioration and major repairs.

The solution to the unwanted moisture in the chimney is to replace or repair the chimney cap. A competent chimney sweep should be able to handle the matter efficiently and safely.

2. Cracks in the chimney crown

Issues with the chimney crown, the piece of cement at the top of the chimney, can also result in leaks. The crown prevents moisture from seeping between the spaces created by the flue lining and the masonry of the chimney itself. If damaged, the crown will not work correctly, and moisture will penetrate it, leading to water damage and possibly a mold infestation.

These cracks will expand over time, allowing more and more moisture into the structure. The accelerated deterioration can cause severe damage. An annual inspection by trained professionals can spot these cracks and make the necessary repairs to stop the moisture intrusion.

3. Damaged chimney flashing

Flashing is utilized to create a tight, waterproof seal where the chimney joins with the roof. If this seal is compromised, water can leak into the chimney and the attic causing water damage. A problem with flashing is a very common cause of water damage from chimney leaks.

4. Chimney cracks that are seeping water

Chimneys are usually constructed of bricks and mortar, both of which are porous and can absorb water. During cold weather, moisture can cause cracks in the bricks and mortar, resulting in leaks. Bricks and mortar can act like a sponge, soaking up water and then wicking that moisture into the chimney and the attic, causing serious water damage. Solutions include repairing cracks in the bricks and putting a watertight sealant on the exterior of the chimney.

5. Moisture in the attic

Condensation from the chimney can cause excess moisture in the attic. The condensation issue is prevalent during the warm months when the attic is warm and the chimney is cooler. This residual moisture can lead to mold, mildew, and wood rot.

A chimney leak can involve secondary water damage, which is difficult to repair because it is extensive and may include mold remediation. Water damage restoration and structural damage repairs may require the dismantling of walls, ceilings, and baseboards. The presence of stagnant gray water or black water necessitates the use of appropriate personal protective equipment. Certain areas will need to be treated for mold. The job site will require disinfecting, sanitizing, and deodorizing with EPA-approved solutions to make the environment clean, fresh, and safe.

For more details about Newtown Square, PA, water damage restoration, email SERVPRO of Media at office@SERVPROmedia.com. The office can also be contacted by phone at (610) 566-5720.