Why Flashing Is Critical For Your Chimney
The Lehigh Valley region, known for its rolling green hills, summer festivals, and proximity to the Pocono Mountains, is an excellent place to raise a family. This area is steeped in tradition, as seen in the masonry chimneys that rise above the rooftops. Whether you enjoy the fireplace or stove for ambiance, supplemental heating, or primary heating, it is essential to have a well-maintained chimney to prevent smoke and toxic fumes from entering your living space. Additionally, keeping water out is critical for the chimney to function efficiently. One of the most vital components in achieving this is the chimney flashing, which helps prevent rain and snow from seeping in.
What Is Chimney Flashing And Why Is It Important?
Chimney flashing, a system of thin metal sheets typically made of aluminum, copper, or steel, is installed at the junction where the chimney meets the roofline. Its primary role is to create a waterproof barrier, preventing moisture intrusion. Despite its seemingly simple nature, its installation is complex and requires specialized skills to avoid premature failure, a common reason for chimney leaks. The consequences of chimney flashing failure are significant, making its maintenance a crucial aspect of chimney care.
Prevents Water Damage
Flashing’s primary function is to divert rainwater and melting snow away from the roof and chimney structure. Without this proper seal, water can seep into the attic, roof deck, chimney masonry, and even interior walls and ceilings. This underscores the crucial role of chimney flashing in preventing water damage and the need for regular checks to ensure its effectiveness.
Protects Air Quality
The integrity of the flashing also has a direct impact on indoor air quality. Water damage in the ceiling and walls can lead to mold growth, releasing spores into the air that can trigger allergies and respiratory issues for family members. This broader implication of flashing integrity underscores the need for timely repairs and maintenance.
Improves Heating Efficiency
Flashing damage can also cause problems, making it less efficient at expelling smoke and increasing the risk of dangerous carbon monoxide leaks and creosote buildup. Properly installed flashing helps ensure optimal performance.
Prolongs the Lifespan of Your Chimney
Chimney flashing significantly contributes to the longevity of your chimney and the roof by preventing water damage. Repairing flashing issues now can save you from much larger and more expensive repairs later.
Types Of Chimney Flashing
As mentioned earlier, flashing is a complex system of several interconnected metal components working together to keep water and snow from invading the chimney structure:
- Base Flashing: These individual sheet metal sections are attached to the roof deck and extend up the sides of the chimney. They are installed in overlapping layers, eliminating any seams where water can penetrate.
- Step Flashing: These are L-shaped metal sections interwoven with the roof shingles or other roofing materials along the sides of the chimney. Each piece overlaps the one below it (like steps) and is bent upwards against the chimney.
- Counter Flashing: This section is embedded in the mortar joints of the chimney masonry, overlapping the base and step flashing. It prevents water intrusion at the masonry joints around your chimney.
- Chimney Cricket or Saddle: This small, peaked roof structure of customized metal flashing is installed on one side of the chimney to prevent water from pooling around its base.
Chimney Flashing Repair
It is essential to make necessary flashing repairs as soon as possible to prevent further damage. Depending on the extent of the damage, your chimney professional may recommend resealing or replacement:
- Resealing: In minor cases where the flashing is intact but the seal is compromised, a masonry professional can apply a high-quality, waterproof sealant specifically designed for roofing and masonry to create a watertight barrier. However, this is often a temporary fix and may not address underlying issues.
- Replacement: If the flashing is significantly damaged, rusted, bent, or improperly installed, complete replacement is the most effective solution. This requires removing the old flashing and installing new materials with properly fitted sections to create a reliable waterproof seal.
We Are Your Local Chimney Repair Expert in Lehigh Valley, PA
Wells & Sons is the Lehigh Valley’s most trusted provider of chimney and fireplace services. Our certified technicians provide expert chimney inspections, flashing repairs, and a comprehensive range of masonry services, including flue relining and chimney crown rebuilding. We are a family-owned and locally operated business proudly serving eastern Pennsylvania, including Allentown, Easton, Lansdale, and Schuylkill Haven. Contact us at https://wellssons.com/scheduling/ to book your appointment today and experience our unwavering commitment to excellence.
