Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
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AfterFast, Reliable Chimney Cap & Crown Across Lansdowne
Chimney cap and crown repair in Lansdowne typically costs $180-$890 depending on whether you need a simple cap replacement or full crown rebuild with coating, and most jobs are completed in a single visit with a Level 2 camera inspection included. Our crews serve Lansdowne directly from our Baltimore office, so we’re familiar with the brick Cape Cods and colonials that define this community and the specific moisture problems they face sitting low in the Patapsco River valley. If you’re seeing white staining on your brick, water in the firebox, or hearing pieces of mortar drop down the flue, call (410) 305-7884 - a live person answers 24 hours a day, and we’ll book you for a documented inspection with photos you can see and a plain-English verdict.
Why Hearthstone Chimney Co. Is Lansdowne’s Preferred Chimney Cap & Crown Company
We’ve been answering calls with a live person for over 42 years, and that steady presence matters to Lansdowne homeowners who’ve learned the hard way that some contractors disappear after the deposit clears. Our Chimney Cap & Crown in Lansdowne work is backed by the 90-Day Done Right Promise in writing - if it’s not right, we come back, no arguing, no paperwork chase.
Our background-checked, uniformed technicians know the local housing stock. They’ve rebuilt crowns on the original single-wythe masonry chimneys along Lansdowne Road, installed multi-flue caps on semi-detached colonials near Hammonds Ferry, and coated spalling crowns in the bungalow courts closer to the river. Most jobs finish in one visit because we stock professional-grade materials from Copperfield, HeatShield, and DuraFlex - no waiting on parts while water keeps getting in.
We don’t quote over the phone for crown work. Every estimate starts with a camera inspection so you see exactly what we see. The number on the estimate is the number on the invoice. That’s a square deal, and it’s how we’ve worked since 1984.
Our Chimney Cap & Crown Services in Lansdowne
Multi-Flue Cap Installation
Most Lansdowne brick Cape Cods and colonials were built with two flues - one for the fireplace, one for the furnace - and too many still have a single undersized cap or two mismatched caps that don’t seal properly. A multi-flue cap covers both flues with one engineered hood, sized to the exact flue spacing and chimney top dimensions. Because Lansdowne’s low-lying position near the Patapsco River valley traps ambient moisture, we specify multi-flue caps with extended skirts and proper storm collars to block wind-driven rain and reduce the efflorescence that shows up as white powder on your brick. Our Chimney Cap & Crown team measures on-site and typically installs within a week of estimate approval.
Crown Repair & Crown Coating
The mortar crown is the concrete wash that seals the top of your chimney where the flues exit. On Lansdowne’s 1940s-60s chimneys, these crowns were often poured too thin, with no reinforcing mesh, using mortar mixes that can’t survive Baltimore County’s freeze-thaw cycle. We see the damage everywhere from the older courts near Riverview to the post-war streets off Washington Boulevard. Small cracks we can coat with HeatShield CrownCoat, a flexible refractory compound that bridges hairline fractures and sheds water. For crowns that have spalled, washed out, or separated from the brick, we remove the bad material, pour a proper reinforced crown with the correct slope and overhang, then seal it. Crown coating alone runs $180-$340; full crown rebuild with coating is $560-$890.
Custom Cap Fabrication
Some Lansdowne chimneys need more than an off-the-shelf cap. Historic bungalows with oversize chimney tops, paired flues at odd centers, or exterior dimensions that don’t match standard catalogs. We measure, fabricate, and install custom caps in stainless steel or black galvanized, with mesh screening sized to keep out Patapsco valley squirrels, raccoons, and the starlings that nest in uncapped flues every spring. Custom caps start at $420 and are typically ready within 5-7 business days.
Cap Replacement
Galvanized caps rust through in 3-5 years in this climate. We’ve replaced dozens of big-box caps that blew off in winter wind or collapsed under ice load, leaving clay tile exposed to direct rain. We install replacement caps from Gelco and Copperfield in 304 stainless steel or copper, with lifetime warranties on the metal. Standard single-flue cap replacement in Lansdowne runs $220-$380 installed, including inspection of the flue top and tile condition.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Lansdowne
We don’t use builder-grade substitutes. Our Lansdowne jobs are built with professional-grade materials from DuraFlex, HeatShield, Gelco, and Copperfield - the same brands specified by chimney professionals nationwide. We stock common cap sizes and CrownCoat material locally, so most Lansdowne homeowners aren’t waiting on shipping. When we recommend a product, it’s because we’ve watched it perform through Baltimore County’s freeze-thaw cycles, not because it’s the cheapest option in a catalog.
Common Chimney Cap & Crown Problems We See in Lansdowne Homes
- Original mortar crowns spalling and cracking. The soft historic mortar on Lansdowne’s 1940s-60s chimneys can’t handle repeated freeze-thaw. Water gets behind the crown, runs down the flue, and shows up as dampness or rust stains in the firebox or on the furnace vent connector.
- Multi-flue stacks with single undersized caps. When a fireplace flue and a converted gas appliance share one cap, the smaller gas flue pulls exhaust backward, causing condensation inside the larger flue. We find this constantly in Lansdowne’s paired-flue Cape Cods, where the gas conversion happened decades ago but the cap never changed.
- Cheap galvanized caps failing in Patapsco valley conditions. The wind and ice loads near the river are real. Lightweight caps pop loose, slide sideways, or collapse, exposing clay tile tops to direct rain. That accelerates liner cracking and second-degree creosote buildup in fireplace flues.
- Efflorescence and interior condensation from valley moisture. Lansdowne’s low elevation means higher ambient humidity year-round. Without a properly sealed crown and cap, that moisture wicks into single-wythe brick and shows up as white staining, musty odors, or deteriorated smoke chamber parging.
Pricing for Chimney Cap & Crown in Lansdowne, MD
Here’s what Lansdowne homeowners actually pay, based on jobs we’ve completed in ZIP code 21227 over the past two seasons:
| Service | Typical Range |
|---|---|
| Single-flue cap replacement (stainless steel) | $220 - $380 |
| Multi-flue cap installation | $340 - $620 |
| Custom cap (fabricated, stainless or copper) | $420 - $780 |
| Crown coating (HeatShield, minor cracks) | $180 - $340 |
| Full crown rebuild with coating | $560 - $890 |
| Level 2 camera inspection with photo report | $89 - $150 (often bundled) |
What moves the number: accessibility (steep roof pitch, tight lot lines), how many flues need coverage, whether the crown needs rebuild or just coating, and if we find hidden flue damage during inspection. We don’t upsell. If the crown can be coated and hold for five years, we’ll say so. If it’s failing structurally, we’ll show you the photo and explain why. Estimates are free, and the price we quote is the price on the invoice. Call (410) 305-7884 for an exact quote on your chimney.
We Also Serve Cities Near Lansdowne
Our crews work throughout Baltimore County and Howard County, including Ellicott City, Catonsville, Woodlawn, and Sykesville. Scheduling and dispatch are coordinated from our Baltimore office, with local routing that keeps response times short for homeowners across the region.
Serving Lansdowne, MD - Our Local Coverage Area
We’re based in the Lansdowne area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Chimney Cap & Crown in Lansdowne
A multi-flue cap is almost always the better choice for Lansdowne’s paired-flue chimneys. Two separate caps rarely seal properly against wind-driven rain in the Patapsco valley, and they don’t solve the draft interference that happens when a gas flue and fireplace flue sit close together. We measure your flue spacing and chimney top dimensions, then fabricate or specify a cap that covers both with proper clearance and a single storm skirt. Call (410) 305-7884 and we’ll inspect to confirm the right approach - estimates are free.
Staining is surface discoloration; failure involves cracks, spalling, or separation from the brick. If you see pieces of concrete or mortar in your firebox, or water dripping down the flue during rain, the crown is breached. Hairline surface cracks without water intrusion can sometimes be coated. We won’t know which you have until we get on the roof with a camera. Our Level 2 inspection includes photos of the crown condition from above and inside the flue. Call for a free estimate.
Yes, and this is critical in Lansdowne where most gas conversions happened in the 1970s-80s without updating the cap or liner. Gas exhaust is cooler and more acidic than oil or coal exhaust, and it condenses inside oversized clay flues. A proper cap for a gas-converted flue needs to prevent rain entry without restricting draft, and the crown must be sealed to stop exterior moisture from compounding the condensation problem. We see this exact scenario constantly in Lansdowne’s post-war housing stock. Call (410) 305-7884 for an inspection.
A Level 2 inspection covers all accessible portions of the chimney structure, the flue interior with a camera, the crown, cap, flashing, and connections to all appliances. On a multi-flue Lansdowne chimney, we camera both flues, inspect the smoke chamber and firebox for each, and document the crown and cap condition with photos you receive. If you’re selling your home, Baltimore County real estate transactions commonly require this level of documentation. The inspection takes 60-90 minutes and ends with a plain-English verdict - no jargon, no scare tactics.
A cap helps, but it may not be enough alone. White staining (efflorescence) means moisture is getting through the brick or mortar somewhere - often the crown, sometimes the flashing, occasionally porous brick from decades of Patapsco valley humidity. On a brick Cape Cod near the Lansdowne Road corridor, our tech found the original mortar crown washed out and two clay tile flues cracked from decades of freeze-thaw, letting water track down onto a gas-converted furnace flue and the fireplace smoke chamber. We coated the rebuilt crown with HeatShield, installed a custom Copperfield multi-flue cap over both flues, and the homeowner’s persistent damper-area staining stopped after the next rain cycle. The right fix depends on where the water originates. We find the source before we quote the repair.
Ready to protect your Lansdowne chimney? Call (410) 305-7884 now. A live person answers 24 hours a day, 7 days a week. We’ll schedule your free estimate, perform a Level 2 camera inspection with photos you can see, and give you a plain-English verdict on exactly what your cap and crown need. No surprises on the bill. Done right - and we stand behind it.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Lansdowne and Baltimore County since 1984.