What Is Chimney Flashing And How Does It Benefit Your Chimney?

With nearly two feet of snowfall every winter in Liberty, MO, Platte City, KS, and the Kansas City region, it creates a lot of pressure on chimneys, especially around the flashing. Chimney flashing is a thin sheet of metal installed where the chimney and roof meet to create a watertight seal. It is one of the most critical components of a chimney, as it helps to prevent water damage to the roof, walls, and foundation of the home. 

It is typically made of aluminum, copper, or stainless steel. Aluminum is the most popular choice because it is inexpensive and durable. Copper is more expensive but also more resistant to rust and corrosion. Stainless steel is the most durable.

chimney flashing services in Prairie Village KSChimney Flashing Installation

Installing the flashing must be done in a certain way. Otherwise, the watertight seal will fail prematurely, requiring its immediate replacement. Improper installation is one of the most common causes of chimney leaks.

  • Base flashing: This is the first flashing layer installed under the shingles with an L-shaped bent upwards against the masonry chimney.
  • Counter flashing: This second layer is placed over the base flashing and embedded in the chimney’s mortar joints.
  • Saddle flashing: Saddle flashing is installed on chimneys wider than 30 inches. It creates a peak that allows water and snow to run off and prevents it from building up on the roof and chimney. 

Importance of Chimney Flashing

So, now that you know what chimney flashing is. You may be wondering why it is important. It’s important because chimney flashing protects your home, chimney, and fireplace from water damage. When water seeps into the roof and chimney, it can cause a variety of problems, including:

  • Mold and mildew growth
  • Wood rot
  • Rusting metal
  • Structural damage
  • Expensive repairs and replacements

When to Repair or Replace Chimney Flashing

Chimney flashing should be inspected annually by a qualified professional. We can quickly identify any damage or wear and tear that may require repair, resealing, or replacement.

If your chimney flashing is damaged, it should be repaired or replaced immediately. Signs that your chimney flashing may need attention include:

  • Leaks in the roof or attic
  • Water damage inside the chimney
  • Decaying brick-and-mortar joints
  • Rusting or peeling flashing
  • Damaged or missing shingles

How to Repair or Replace Chimney Flashing

Repairing or replacing chimney flashing is a complex job a qualified professional should do. The process typically involves removing the old flashing, inspecting for damage, and installing new flashing.

Prevent Chimney Flashing Problems

There are a few things you can do to help prevent chimney flashing problems:

  • Have your chimney inspected every year by a certified sweep.
  • Keep the roof and chimney clean and free of debris.
  • Trim trees and shrubs around the chimney so they do not touch the flashing.
  • Ensure the gutters and downspouts are not clogged so water can flow away from the chimney.

preventing water damage in Overland Park KS

By following these tips, you can help to ensure that the flashing remains in good condition and protects your home from water damage.

Flashing Repair in Independence, MO

Chimney flashing helps to protect your roof and chimney from water damage. So, having your chimney inspected annually by a qualified professional is essential. Call Fluebrothers Chimney Service at (913) 236-7141 to speak with a certified sweep or use this handy form to contact us online today! We serve the entire Kansas City, KS/MO area.