Top 5 Chimney Sweep Tips Coatesville Homeowners Get Wrong (And How to Fix Them)

By Amber Glow Chimney Inc Team · Updated October 19, 2026

Coatesville’s historic brick homes and older chimneys need specialized care. Skipping annual sweeps, ignoring creosote buildup, or assuming a ‘quick clean’ is enough can lead to dangerous chimney fires or costly repairs. Here’s what local homeowners get wrong, and how to do it right.

Myth: ‘My chimney’s brickwork is sound, so I’m safe skipping the sweep.’

A chimney inspection is a detailed evaluation of your flue, liner, and masonry, not just a visual check. In Coatesville, where many homes have brick chimneys built before 1980, hidden issues like cracked liners or deteriorating mortar can go unnoticed until it’s too late. The Chimney Safety Institute of America the Chimney Safety Institute of America (CSIA)|https://www.csia.org/)) recommends annual inspections for homes using fireplaces regularly, especially in older brick structures. If your chimney hasn’t been inspected in over a year, or if you’ve noticed rust stains on the fireplace hearth, excessive smoke, or a strong odor, schedule a Level 2 inspection here. Many Coatesville homeowners wait until they see soot inside the fireplace, but by then, creosote (a flammable tar) may already be coating the flue walls. In our experience, about 60% of Coatesville chimneys we inspect have undetected creosote buildup, even if the homeowner hasn’t burned wood in months. The EPA’s Burn Wise program the EPA's Burn Wise program warns that creosote is the leading cause of chimney fires, and older brick chimneys are particularly vulnerable because their wider flues trap more debris.

Fact: ‘A sweep only removes soot, creosote is a separate (and dangerous) problem.’

Creosote isn’t just soot. It’s a highly flammable byproduct of burning wood, and it builds up in layers inside your flue. In Coatesville’s humid climate, where moisture seeps into older brickwork, creosote hardens faster, creating a glossy, tar-like coating that can ignite at temperatures as low as 1,100°F. The National Fire Protection Association the National Fire Protection Association (NFPA)|https://www.nfpa.org/)) reports that one in every three home heating fires involves chimneys, and creosote is often the culprit. If your chimney sweep only scrubs the walls without addressing creosote, you’re leaving your home at risk. Stage 2 creosote, the most dangerous form, looks like black, shiny tar and requires professional removal with specialized tools. In Coatesville, we’ve seen chimneys with creosote buildup up to 1 inch thick, which can block airflow and force toxic gases into your home. If you’ve burned green, unseasoned wood or softwoods like pine, creosote forms faster. Solution: Use only seasoned hardwood (oak, maple, or ash) and have your chimney swept at least twice a year if you burn wood frequently. For older brick chimneys, consider a stainless steel liner to reduce creosote buildup learn more.

Myth: ‘I can save money by sweeping my chimney myself.’

DIY chimney sweeping is not the same as professional cleaning, especially in Coatesville’s older homes. Many homeowners grab a brush and rod from a hardware store, but without proper training, the right tools, or knowledge of your chimney’s unique structure, you risk damaging the liner, missing creosote, or even causing a fire. Older brick chimneys often have irregular flue shapes, cracked mortar, or deteriorated masonry that a DIY sweep can’t safely navigate. The CSIA the Chimney Safety Institute of America (CSIA)|https://www.csia.org/)) warns that improper sweeping can dislodge loose bricks or mortar, leading to costly repairs. In Coatesville, we’ve seen DIY attempts push creosote deeper into the flue, making it harder to remove later. Professional sweeps use rotating brushes, flexible rods, and vacuum systems designed for your chimney’s specific layout. Plus, a certified sweep will inspect your chimney for structural issues, something a DIY job won’t catch. If you’re tempted to DIY, at least rent a professional-grade chimney sweep kit and follow the manufacturer’s instructions. But for older brick chimneys, hire a licensed sweep, it’s the only way to ensure safety and compliance with NFPA 211 the National Fire Protection Association (NFPA)|https://www.nfpa.org/)). Compare DIY vs. pro costs to see why professionals save money long-term.

Fact: ‘A ‘quick sweep’ is enough, unless my chimney is really dirty.’

There’s no such thing as a ‘quick sweep’ when it comes to chimney safety. What most homeowners call a ‘quick sweep’ is often just a surface-level cleaning that misses critical areas. In Coatesville, where many chimneys have multiple bends, rusted dampers, or deteriorated liners, a thorough sweep requires disassembling parts of the chimney system to access hidden creosote. The CSIA the Chimney Safety Institute of America (CSIA)|https://www.csia.org/)) defines a proper sweep as one that: - Uses flexible rods to reach every inch of the flue. - Includes vacuum removal of debris to prevent re-deposition. - Checks for structural damage in the masonry and liner. - Tests for carbon monoxide leaks (common in older brick chimneys with cracked liners). If your sweep takes less than 30 minutes, they’re likely skipping steps. In Coatesville, we’ve found that chimneys with complex brickwork often require 60–90 minutes for a full clean. Warning signs your sweep was rushed: - You still see soot in the fireplace after the service. - Your fire burns poorly (weak draft, excessive smoke). - You notice new rust stains on the hearth within weeks. For older homes, consider a Level 2 inspection ($150–$250 in Coatesville) to check for hidden issues like spiderweb cracks in the flue or deteriorating mortar. See our pricing guide for what to expect in your area.

Myth: ‘I don’t need a sweep until winter, my chimney is fine in summer.’

Summer is the worst time to ignore your chimney, especially in Coatesville’s humid climate. Many homeowners assume their chimney is ‘off-limits’ until fall, but moisture, animal nests, and even pollen can clog your flue during the warmer months. In older brick chimneys, summer humidity accelerates mortar deterioration, and rainwater can seep through cracks, weakening the structure. The U.S. Environmental Protection Agency the U.S. Environmental Protection Agency recommends annual chimney maintenance to prevent mold growth, insect infestations, and rust in metal components. What happens if you skip summer maintenance? - Animal nests (squirrels, birds, or even raccoons) can block your flue, forcing toxic gases into your home. - Mold and mildew grow in damp flues, creating a musty odor and potential health risks. - Creosote hardens over time, making it harder to remove later. In Coatesville, we’ve pulled out nests made of leaves, twigs, and even insulation from chimneys that hadn’t been used in months. Solution: Schedule a summer inspection to: - Remove debris and nests. - Check for moisture damage in the masonry. - Ensure your damper seals properly. Even if you don’t use your fireplace in summer, humidity and weather take a toll on older brick chimneys. Learn seasonal tips to protect your investment.

Fact: ‘A new chimney liner solves all my problems.’

A chimney liner doesn’t replace proper sweeping or maintenance, it’s just one part of a safe chimney system. In Coatesville, many older homes have original clay or cast-in-place liners that are cracked, corroded, or missing entirely. While a stainless steel liner (the most durable option) can reduce creosote buildup and improve draft, it won’t fix poor burning habits, lack of inspections, or masonry damage. The CSIA the Chimney Safety Institute of America (CSIA)|https://www.csia.org/)) states that liners should be inspected annually for gaps, rust, or misalignment. Common mistakes Coatesville homeowners make with liners: - Installing a liner without checking the existing flue first (some older brick chimneys have irregular shapes that require custom liners). - Skipping a sweep after liner installation (creosote can still build up above the liner). - Choosing the wrong liner type (e.g., aluminum liners corrode faster in humid climates like Coatesville’s). If your chimney has visible cracks in the brickwork, a sagging crown, or a rusted damper, a liner alone won’t fix these issues. Solution: Get a Level 2 inspection before installing a liner to assess your chimney’s full condition. In Coatesville, stainless steel liners cost $1,200–$3,500, depending on height and complexity. See our liner benefits guide for what to consider before upgrading.

Myth: ‘My chimney sweep doesn’t need to know about my home’s age or brickwork.’

Your chimney’s age, brick type, and construction style determine how it’s cleaned and maintained. In Coatesville, where many homes date back to the 1800s and early 1900s, chimneys often have: - Hand-laid brickwork with varying mortar strengths. - Original clay flues that are more prone to cracking. - No insulation, making them more vulnerable to moisture damage. A sweep who treats your chimney like a modern, insulated flue could accidentally damage the masonry or miss critical issues. Red flags your sweep isn’t experienced with older brick chimneys: - They don’t ask about your home’s age or construction year. - They use rigid brushes (which can crack old flues). - They don’t inspect the mortar joints for deterioration. In Coatesville, we’ve seen brick chimneys with mortar crumbling from 100+ years of weathering, and a rough sweep can dislodge bricks or worsen cracks. Solution: Choose a sweep with experience in historic masonry and ask: - ‘Do you specialize in older brick chimneys?’ - ‘What tools and techniques do you use for hand-laid brickwork?’ - ‘Will you check for structural integrity beyond just cleaning?’ See how to pick the right sweep for Coatesville’s older homes.

Frequently Asked Questions