How to Spot Trouble with Your Chimney Before Fireplace Season

As the days get shorter and the air gets cooler, many homeowners look forward to that first cozy fire of the season. But before you strike a match, it’s important to make sure your chimney is in good working order. A damaged or blocked chimney doesn’t just reduce efficiency - it can create serious safety hazards, including chimney fires and carbon monoxide buildup. The good news? A little preventative maintenance now can save you from expensive repairs and dangerous situations later.

Here’s what to look for when checking your chimney this fall.

Cracks and Gaps in the Masonry

Start with a visual inspection. If you see crumbling mortar, missing bricks, or hairline cracks, that’s a sign your chimney is weakening. Water can seep into these gaps, freeze in the winter, and make the damage worse. Over time, this can compromise the entire structure. Small cracks can often be sealed, but larger problems usually require professional repair.

A Damaged Chimney Cap or Crown

Your chimney cap is the unsung hero of the fireplace system. It keeps out rain, snow, animals, and debris. Without it, your chimney can quickly become clogged or water-damaged. Similarly, the chimney crown - the cement slab at the very top - acts as a shield. If you notice rust on the cap or chips in the crown, it’s time to repair or replace before moisture finds its way inside.

Creosote Buildup

Even if the outside looks fine, the inside of your chimney can be another story. Burning wood produces a tar-like substance called creosote, which clings to the interior walls. Creosote is highly flammable, and too much of it can spark a chimney fire. If you notice a strong, smoky odor, or if you can see black, shiny buildup inside, schedule a professional cleaning before you use the fireplace again.

Signs of Water Damage

Look around the base of your chimney and inside your attic for water stains or dampness. Discoloration on ceilings and walls near the chimney can be a red flag. Water entering through cracks or missing flashing (the metal seal where the chimney meets the roof) can cause mold, rot, and costly structural issues.

While You’re Up There - Check Your Roof

Inspecting your chimney is also a great opportunity to take a quick look at your roof. Loose, curling, or missing shingles can lead to leaks that damage not only your chimney but your entire home. Shingle problems are easiest to fix when they’re caught early, so don’t wait until you see water spots inside your house to take action.

When to Call a Pro

Some issues, like trimming back tree branches or replacing a simple cap, may be safe for homeowners to tackle. But climbing on a roof always comes with risks, and chimney repairs often require professional tools and expertise. If you’re unsure about the condition of your chimney or roof, schedule an inspection with a qualified contractor. It’s a small investment that can prevent big problems down the line.

A healthy chimney doesn’t just make your fireplace more efficient; it keeps your family safe, too. Take a little time this season to inspect for cracks, damaged caps, creosote buildup, and signs of water leaks. And while you’re up there, give your roof a once-over, too. A careful check now means peace of mind when you’re enjoying those winter nights by the fire.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Keep Critters Out By Animal-Proofing Your Attic

Dealing with an unexpected attic visitor can be incredibly frustrating. From midnight scurrying to high-pitched chattering, these uninvited guests can disrupt your peace and quiet. But it's not just about the noise—animals love the dark, secure environment your attic provides, making it a prime spot for nesting. The last thing you want is for one animal to invite their friends or, worse, start a family up there. Here are four updated strategies to keep your attic free from furry intruders:

1. Trim Back Trees

Prevent easy access by trimming trees close to your home. Squirrels and chipmunks can use overhanging branches to jump onto your roof. These critters are notorious chewers; once inside, they can cause serious damage to wiring and piping. Avoid the hassle of expensive repairs by maintaining a clear perimeter around your roof.

2. Regular Roof Inspections

Small holes and loose shingles are open invitations for animals. Ensure your roof is in top condition, paying extra attention to the areas around chimney flashing. Animals need water, and a leaky roof can provide a constant supply, making it an attractive nesting spot for rats and mice.

3. Install a Chimney Cap

Chimneys are like open doors to curious animals. Installing a simple mesh chimney cap can prevent squirrels, raccoons, and other critters from exploring your fireplace. It’s an easy, effective way to keep your home safe while maintaining proper ventilation.

4. Secure Your Vents

Vents are necessary for your home’s ventilation but can also be entry points for animals. Install vent covers to allow air to flow while keeping pests out. This simple addition can prevent mold and mildew while safeguarding your attic.

Identifying and Handling Intruders

If you suspect you already have an attic intruder, identifying the type of animal can help you take the right steps. Rats are persistent gnawers with distinct squeaks. Mice may sound louder than expected due to their rapid movements. Raccoons can be identified by their screams or hisses, while squirrels are quieter but destructive to insulation. Possums are often noted for their strong odor.

Whatever the animal, it's crucial not to let it settle in. Professional exterminators can offer solutions such as trapping, releasing, and one-way exclusion doors to ensure the animals leave without harming your home.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Waterproofing Your Chimney

With recent summer rainstorms bringing unexpected downpours, homeowners need to pay extra attention to their chimneys. A chimney can be a hidden source of leaks and damage if not properly maintained. Waterproofing your chimney is essential to protect your home from moisture damage, ensuring it remains safe and sound throughout the year. Here’s a step-by-step guide to help you waterproof your chimney effectively.

Why Waterproof Your Chimney?

Chimneys are exposed to the elements year-round, making them susceptible to water damage. Bricks and mortar can absorb water, leading to deterioration over time. This process can cause cracks, spalling (flaking of the brick surface), and even structural damage. Waterproofing your chimney not only prevents these issues but also extends its lifespan, saving you money on potential repairs.

Assess the Current Condition

Before you begin waterproofing, inspect your chimney for any existing damage. Look for cracks, loose mortar, or spalling bricks. If you find significant damage, it’s best to have a professional mason repair these issues before proceeding with waterproofing. Minor cracks and gaps can be filled with a high-quality chimney sealant.

Clean the Chimney

A clean surface is crucial for effective waterproofing. Remove any dirt, moss, or debris from the chimney using a wire brush and a garden hose. For stubborn stains, a mild detergent solution can be used. Ensure the chimney is completely dry before applying any waterproofing products.

Choose the Right Waterproofing Product

There are various waterproofing products available, but not all are suitable for chimneys. Opt for a breathable, water-repellent solution designed specifically for masonry. These products allow water vapor to escape from the brick while preventing liquid water from penetrating the surface.

Apply the Waterproofing Solution

1. Preparation: Wear protective gloves and eyewear. Cover the surrounding area to protect it from overspray.

2. Application: Using a pump sprayer or a paintbrush, apply the waterproofing solution evenly across the entire chimney surface. Start from the bottom and work your way up to ensure complete coverage. Be generous with the application, but avoid over-saturating any area.

3. Second Coat: After the first coat has dried (usually within a few hours, depending on the product), apply a second coat for added protection.

4. Drying Time: Allow the chimney to dry thoroughly. Check the manufacturer’s instructions for specific drying times, but typically, it takes about 24-48 hours for the solution to cure completely.

Regular Maintenance

Waterproofing is not a one-time fix. Inspect your chimney annually, especially after heavy rainstorms, to ensure the waterproofing is intact. Reapply the waterproofing solution every 5-7 years, or as recommended by the product manufacturer.

Waterproofing your chimney is a straightforward task that can save you from costly repairs and headaches down the line. However, this project should only be done if you’re completely comfortable on a roof and using a ladder. If this kind of home maintenance task isn't something you do regularly, it’s a good idea to call a professional. No home improvement job is worth a trip to the emergency room. 

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.