How to Keep Snow Out of Your Chimney

It’s November, and that means that winter will be here before you know it. That means you must get your home ready for the snow, ice, and freezing temperatures. One often overlooked winter proofing chore is securing the chimney. Why? Because most people think snow falling into the chimney is harmless, but it can be devastating. In this post, we’ll discuss why keeping snow out of your chimney is essential and tips to stop it from entering.

Why Keeping Snow Out of Your Chimney Matters

Moisture Damage

When snow gets in the chimney, it melts, creating moisture that seeps into the bricks and mortar. This water speeds up deterioration, leading to masonry cracks. Water damage is the number one problem for chimneys, especially in areas that experience the freeze/thaw cycle. When water seeps into the bricks and mortar, it freezes and expands, causing tiny cracks that worsen. If you don’t fix this immediately, it can cause significant structural damage, including collapse.

Blockages & Poor Ventilation

Snow also causes blockages in the flue, restricting airflow and affecting the fireplace’s performance. When the chimney is blocked, smoke, carbon monoxide, and other harmful gases can’t exit properly. This buildup can lead to poor indoor air quality, pose health risks, and increase the chance of carbon monoxide poisoning.

Fire Hazards

Snow and ice in the chimney can also create blockages that interfere with venting hot air, potentially leading to heat buildup. This is problematic if you have creosote buildup because creosote is highly flammable and significantly increases the risk of a fire.

Animal & Debris Blockages

Rodents, birds, and other small animals look for shelter during winter, and one place they love is a nice, warm chimney. This blocks the flue, obstructing airflow and increasing safety risks.

Tips for Keeping Snow Out of Your Chimney

Chimney caps are affordable solutions to keep snow, rain, ice, and animals out of the chimney. The cap covers the chimney’s top and has a mesh screen, allowing smoke to escape while preventing things from getting in.

Install a Crown

The crown is a concrete slab that rests atop the chimney and protects the flue from rain, snow, and ice. Because it’s concrete, the crown is susceptible to water damage, too, which is why it’s crucial to schedule regular inspections by a trained professional to look for signs of wear and tear and potential safety issues.

Waterproof the Chimney

Consider applying a waterproofing product to the chimney’s exterior. These products create a water-resistant barrier while allowing the bricks to breathe and expel internal moisture. A high-quality water sealant can prevent snow and ice from wreaking havoc on your chimney and requiring expensive repairs.

Schedule Annual Maintenance

Annual chimney inspections and maintenance by certified chimney sweeps are essential to ensure your chimney’s safety and performance. A professional chimney sweep can assess every component and the masonry and alert you about potential problems. Regular maintenance keeps the chimney clean, safe, and ready for seasonal changes.

Clear Snow From the Roofline

Heavy snows can pile up around the chimney, increasing the chances of snow and ice getting in through cracks around the chimney cap. After heavy snowfall, remove the snow buildup from around the chimney and roofline. Be careful when clearing snow to not damage the roof or chimney.

Check Flashing for Gaps or Leaks

Flashing is the metal material around the chimney’s base that prevents water from seeping into the home where the roof meets the chimney. If the flashing is cracked, loose, or damaged, snow and ice can penetrate, causing water damage. Check the flashing annually and repair visible damage before winter arrives.

Chimney Solutions is the go-to chimney and fireplace professional in Indiana and the surrounding areas. Our team boasts over 20 years of experience, and our certified technicians are members of the Chimney Safety Institute of America and the National Chimney Sweep Guild. Contact us today and let our helpful team get your chimney winter-ready with a thorough cleaning and inspection.