Why Waterproofing Is Crucial

Your chimney gets most of its use during the winter, but year round it’s subject to storms and the elements. And while it’s built to last, it’s also exposed to a big threat year round: water. Rain, snow, and even moisture from the air can slowly wear down the brick and mortar that makes up your chimney. Over time, this damage can compromise both the structure of the chimney and the safety of your home. The good news is that professional chimney waterproofing can stop most of these problems before they start.

The Biggest Culprit: Failing Mortar

Mortar is the binding material between the bricks in your chimney that essentially act as the glue that holds the chimney together. With age and exposure to weather for years, mortar joints can crack or crumble, which creates tiny openings where water can seep in. Once moisture gets inside, it can lead to rusted components, weakened bricks, and even structural instability. If left unchecked, these issues can escalate quickly and become costly to repair.

How Waterproofing Helps

Waterproofing treatments are more than just a protective coating. High-quality sealants cover the masonry and chemically bond with the minerals inside. This reaction creates a long-lasting shield that repels water while still allowing trapped moisture to escape. Even if you haven’t noticed water problems yet, adding a protective barrier now can significantly extend the life of your chimney. No chimney is safe from the elements, so it’s best to protect the structure while you can. 

Other Sources of Water Damage

While worn mortar is a leading cause of chimney leaks, two other potential culprits are worth keeping an eye on:

• Damaged Chimney Cap

The chimney cap acts as the first line of defense, blocking rain, debris, and animals from getting inside. If it’s cracked, loose, or missing, water has a direct path into the flue and fireplace. During colder months, trapped water can freeze and expand, causing frost heaves that damage the masonry even further. Since cap issues aren’t always visible from the ground, yearly inspections are the best way to catch problems early.

• Faulty Flashing

Flashing is the metal barrier that seals the joint where the chimney meets the roof. When it’s properly installed and in good condition, it keeps the gap watertight. But if flashing is bent, rusted, or pulling away, water can seep into both the chimney and your home’s interior. Over time, this can lead to wood rot, mold, and significant structural damage.

Protect Your Chimney and Your Home

Chimney waterproofing isn’t just an upgrade; it’s an investment in the long-term health of your chimney and home. By addressing potential issues before they turn into costly repairs, you protect your chimney’s structural integrity and ensure it continues to work safely for years to come.

In Need of Chimney Waterproofing? Call Twin City Today

Twin City is a full-service, family-owned fireplace company with locations in Edina and Woodbury, MN. Our staff is highly experienced and knowledgeable and will make sure your chimney is in the best shape possible, ensuring safety as well. We specialize in the sale, service, and installation of gas and wood-burning fire-places for indoor and outdoor spaces.