Bordentown Chimney Sweep Checklist: What to Inspect Before, During, and After Cleaning (Older Brick Homes)

By Matts Brothers Chimney Team · Updated November 3, 2026

A Bordentown chimney sweep should include a thorough inspection of your brickwork, liner, and flue before cleaning begins. Start by checking for cracks in the masonry, rust stains near the roof, and creosote buildup inside the flue. After cleaning, verify the sweep confirms no structural damage or blockages remain, especially critical for older brick homes prone to moisture and wear. Skip this step, and you risk hidden issues turning into expensive repairs by winter.

What a Bordentown Chimney Sweep Actually Inspects (And Why It Matters for Brick Homes)

A chimney inspection is a detailed examination of your flue, liner, and masonry to identify damage, blockages, or safety hazards before cleaning. For Bordentown’s older brick homes, many built in the 1800s or early 1900s, the inspection focuses on three critical areas: the flue’s interior, the liner’s integrity, and the brickwork’s condition. The flue must be clear of creosote (a flammable tar-like buildup from wood burning), the liner should show no cracks or corrosion, and the brickwork mustn’t have mortar crumbling or water stains near the roof. Neglecting a chimney inspection is like overlooking a cracked flue, problems fester until they force an expensive overhaul.

Bordentown’s humid summers and freeze-thaw cycles worsen these issues. If your chimney has a single-wall metal liner (common in homes built before the 1980s), it’s especially vulnerable to rust and separation from the masonry. A sweep should note whether the liner is properly seated and sealed at the smoke chamber. For brick chimneys, check for spalling (flaking bricks) or efflorescence (white powdery deposits), which signal moisture intrusion. The Chimney Safety Institute of America the Chimney Safety Institute of America (CSIA)|https://www.csia.org/)) recommends that any inspection include a Level 1 (basic visual) or Level 2 (video scan) check, especially if your home is over 50 years old.

Pro tip: If your Bordentown home has a masonry chimney with no liner, the inspection becomes even more critical. Unlined flues are prone to creosote fires, and the brickwork itself can degrade faster. Ask your sweep to document any cracked joints or missing mortar, these are red flags for water damage, which can lead to costly masonry repairs by winter. For a deeper dive into inspection levels, see our Bordentown Chimney Inspection Guide: Level 1, 2 & 3 Explained (When to Choose Each).

5 Things to Check Before Booking a Bordentown Chimney Sweep (Avoid Costly Surprises)

Before scheduling a Bordentown chimney sweep, perform a quick pre-cleaning inspection to flag obvious issues. This saves time, and money, by ensuring the sweep focuses on the right problems. Here’s what to look for:

1. Visible Creosote or Soot in the Firebox: If you see thick black or tarry deposits on the glass door or walls, your chimney needs cleaning immediately. Bordentown’s older homes often burn wet or unseasoned wood, accelerating creosote buildup. The EPA’s Burn Wise program the EPA's Burn Wise program warns that Stage 2 creosote (glossy, tar-like) is highly flammable and can ignite with a single spark.

2. Cracks or Missing Mortar in the Brickwork: Walk around your chimney’s base and inspect the crown (top). If you spot vertical cracks wider than 1/8 inch or crumbling mortar, water is likely seeping in. This weakens the masonry and can lead to spalling (bricks popping off) during Bordentown’s winter freezes. Learn how to repair minor cracks before they worsen in our Chimney Waterproofing & Leak Repair guide.

3. Rust Stains on the Roof or Flashing: Rust around the chimney’s base or on the roof flashing means moisture is entering the flue. This is a sign the chimney cap or crown is failing. In Bordentown’s climate, this often happens after heavy summer rains or snowmelt. A damaged cap can let debris (and animals) into the flue, causing blockages.

4. Unusual Smoke or Odors: If smoke backs up into your home or you smell gas when lighting the fireplace, your flue is partially blocked or the liner is damaged. A blocked or damaged chimney isn’t just a fire risk; it’s a silent carbon monoxide threat in your home. Never ignore this, book a sweep now.

5. Animal Nests or Debris: Birds, squirrels, or raccoons often nest in Bordentown chimneys after summer. If you hear scratching or see droppings in the firebox, the flue is blocked. A sweep will remove the nest, but you’ll need a Level 2 inspection to check for damage to the liner or masonry.

Should you DIY this check? For the first four items, yes, use a flashlight and binoculars to inspect from the ground. But if you find deep cracks, rusted liners, or animal nests, call a licensed Bordentown chimney sweep immediately. Need help identifying these issues? Our DIY Chimney Self-Inspection guide for Bordentown homeowners covers this step-by-step.

What Happens During a Bordentown Chimney Sweep (And What You Should See)

A professional Bordentown chimney sweep follows a structured process, but not all sweeps document their findings the same way. Here’s what should happen during your appointment, and what you should ask for:

1. The Sweep’s Tools and Gear: A legitimate chimney sweep uses a rotary brush system (for creosote removal) and a video inspection camera (to check the liner and flue). If they only use a push broom, they’re missing Stage 2 creosote (which requires high-heat tools). Ask to see their CSIA certification, this ensures they follow industry standards.

2. Inspection Before Cleaning: The sweep should perform a Level 1 or Level 2 inspection (depending on your chimney’s age and condition). This includes: - Measuring creosote thickness (if present) and noting its stage. - Examining the flue liner for corrosion, gaps, or detachment from the surrounding brickwork. - Inspecting the smoke chamber for debris or damage. - Examining the crown and cap for cracks or missing pieces.

3. The Cleaning Process: For older brick chimneys, the sweep may use a high-pressure vacuum to remove debris and a rotary brush to scrape creosote from the flue walls. If your chimney has a clay tile liner (common in pre-1980s homes), the sweep must be gentle to avoid damaging the tiles. Listen for scraping or grinding noises, these signal creosote buildup. If the sweep finishes in under 30 minutes, they likely missed something.

4. Post-Cleaning Documentation: A reputable Bordentown sweep provides a written report with: - Photos of the flue before and after cleaning. - Notes on any damage found (e.g., cracked liner, spalling bricks). - Recommendations for repairs (e.g., relining, repointing, or a new cap). - The next recommended cleaning date (usually within 6–12 months, depending on usage).

A video inspection reveals what the naked eye misses, hidden damage, misaligned joints, or failing mortar. It’s worth the investment. A Level 2 inspection costs $100–$200 in Bordentown but can reveal hidden issues like liner separation or water damage that a visual inspection misses. For older homes, this is often the difference between a $200 repair and a $2,000 relining project.

Pro move: If your sweep finds Stage 2 creosote, ask if they offer a creosote removal warranty. Some companies guarantee they’ve removed all flammable deposits, otherwise, you’re at risk for a chimney fire. Learn how to prevent creosote buildup in our Chimney Fire Prevention guide.

After the Bordentown Chimney Sweep: 4 Critical Follow-Up Steps (Don’t Skip These)

Once the sweep leaves, your work isn’t done. Here’s how to ensure the job was thorough, and protect your Bordentown home from future issues:

1. Test the Fireplace Immediately: Light a small fire and watch the smoke. If it backs into the room or smells like gas, the flue is still blocked or the damper isn’t sealing properly. This is a sign the sweep missed something. Do not use the fireplace until a second inspection confirms it’s clear.

2. Check for Water Leaks: After cleaning, inspect the roof and chimney base for new water stains. If the sweep disturbed old debris, it can expose hidden cracks. Bordentown’s summer humidity means moisture will seep in faster, address leaks within 48 hours to prevent masonry damage. For DIY fixes, see our Chimney Waterproofing guide.

3. Review the Sweep’s Report: Look for: - Any recommended repairs (e.g., relining, repointing, or a new cap). - The creosote stage, if it was Stage 2, schedule a second cleaning in 3–6 months. - Notes on the liner, if it’s rusted or cracked, you’ll need a chimney relining before winter.

4. Schedule the Next Cleaning: The NFPA the National Fire Protection Association (NFPA)|https://www.nfpa.org/)) recommends cleaning at least once a year for homes that burn wood. For Bordentown’s older brick homes, twice a year (fall and spring) is safer, especially if you use the fireplace heavily. Mark your calendar before the holidays, when demand spikes and sweeps get booked solid.

Do I really need a chimney cap after a sweep? Yes, if you don’t have one. Bordentown’s windy spring storms can push debris into an unprotected flue, causing blockages. A stainless steel cap costs $150–$300 but prevents 90% of animal nests and rain damage. See our Chimney Crown & Cap Repair guide for local Bordentown options.

Bordentown-Specific Chimney Risks: What Older Brick Homes Face (And How to Avoid Them)

Bordentown’s older brick homes, especially those near the Delaware River or in historic districts like Washington Street, face unique chimney challenges due to age, masonry quality, and climate. Here’s what sets them apart:

1. Soft, Crumbling Mortar: Many Bordentown chimneys were built with lime mortar, which weakens over time. The freeze-thaw cycles of Bordentown winters cause mortar to crumble, leaving gaps where water enters. This leads to spalling bricks and rusted liners. A sweep should note if repointing (replacing mortar) is needed, this is often overlooked but critical for homes over 100 years old.

2. Unlined Flues: If your home predates the 1980s, it likely has an unlined masonry chimney. These are high-risk for creosote fires and water damage. The NFPA the National Fire Protection Association (NFPA)|https://www.nfpa.org/)) states that unlined chimneys must be inspected annually, and relined if they show signs of wear. For Bordentown homeowners, relining costs $1,500–$3,500, but it’s cheaper than a chimney fire repair.

3. River Proximity Issues: Homes near the Delaware River (like those on Front Street) experience higher humidity, which accelerates rust in metal liners and mortar deterioration. If your chimney is closer than 50 feet to the river, ask your sweep to check for sulfur corrosion, a common problem in Bordentown’s older brickwork.

4. Historic Preservation Rules: Bordentown’s National Register Historic District requires that repairs match the original materials. If your chimney needs tuckpointing (replacing mortar to match the original color), a sweep should recommend a licensed masonry contractor familiar with historic homes. See our Masonry Repair & Tuckpointing guide for Bordentown-specific costs.

Is it worth investing in a chimney liner for my older Bordentown home? Absolutely. A double-wall stainless steel liner adds $2,000–$4,000 to your project but eliminates fire risks, improves draft, and protects your brickwork for decades. For homes on Washington Street or in flood-prone areas, this is a must. Compare repair vs. replacement costs in our Bordentown-specific guide.

When to Call a Bordentown Chimney Sweep vs. a Masonry Repair Pro (And How to Save Money)

Not all chimney issues require a sweep, some need a masonry specialist. Here’s how to tell the difference and avoid overpaying:

- Call a Chimney Sweep If: - You see thick creosote in the firebox or flue. - Smoke backs into your home when burning wood. - You hear loud cracking or popping from the chimney (sign of a creosote fire). - Animals (birds, squirrels) have nested in the flue.

- Call a Masonry Repair Pro If: - Your brickwork has large cracks (wider than 1/4 inch). - The mortar is crumbling or missing in sections. - You see water stains on the ceiling or walls near the chimney. - The chimney cap is rusted or missing.

How to save money: If your sweep finds minor masonry issues (like small cracks or loose bricks), they may offer a discounted repair package. However, for major work (relining, repointing, or crown repair), get 3 quotes from Bordentown masonry pros. Our pricing guide breaks down typical costs for older brick homes.

Pro tip: If your chimney is over 100 years old, combine your sweep appointment with a masonry inspection. Many Bordentown homeowners skip this and end up with $5,000+ repair bills after a chimney fire. See our 7 Signs of a Chimney Emergency guide for Bordentown.

Frequently Asked Questions