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 Severn
Chimney cap and crown work in Severn typically runs $280-$890 depending on whether you’re replacing a corroded cap, coating a cracked crown, or both. Most of our Chimney Cap & Crown jobs in Severn are completed in a single visit, with upfront pricing agreed before we start. Call (443) 464-2560 for a free estimate.
We’ve been dispatching crews to Severn from our Baltimore office for decades, and we know the chimneys here. The brick colonials off Reece Road, the split-levels near Telegraph Road, the cape cods clustered around Fort Meade - they share a common problem. Salt air from the Chesapeake accelerates corrosion on galvanized caps, and the 1960s-1980s construction boom left thousands of homes with thin, flat crowns that weren’t built to survive forty years of freeze-thaw cycles. When a cap shifts or a crown cracks, water enters the flue, damages the liner, and eventually shows up as staining on your firebox ceiling or a rusted damper you can’t see until it’s too late.
Why Hearthstone Chimney Co. Is Severn’s Preferred Chimney Cap & Crown Company
We’ve served communities across central Maryland for over 42 years. In Severn specifically, our reputation rests on one thing: we document what we find, explain it in plain English, and stand behind the work. Our 90-Day Done Right Promise means if it’s not right, we come back. In writing, no arguing.
Our Level-2 camera inspections end with photos you can see and a verdict you can understand. No jargon, no pressure. Background-checked, uniformed technicians. Most jobs done in one visit. A live person answers the phone 24 hours a day, 7 days a week - not a voicemail, not a callback queue. The number on the estimate is the number on the invoice. That’s the square deal.
We coordinate scheduling from our Baltimore office, but our crews serve Severn locally and know the area. We understand the Fort Meade rental market, the age of the housing stock, and the specific failure patterns that salt-air exposure creates here. That local knowledge saves time and prevents callbacks.
Our Chimney Cap & Crown Services in Severn
Cap Installation
New cap installation in Severn typically costs $280-$450 for a standard single-flue stainless steel model. We size the cap to your flue, not the other way around. For homes near the water or exposed to prevailing winds off the Chesapeake, we recommend stainless over galvanized - the salt air here will eat through galvanized mounting flanges and spark-arrestor mesh in 8-12 years, sometimes less. A properly installed stainless cap from Olympia Chimney or Famco will outlast the next roof.
Cap Replacement
This is our most common cap call in Severn. Galvanized caps from the 1980s and 90s are failing now in concentrated numbers. We replaced one last month on a colonial off Mapes Road - the mounting screws had corroded to dust, and the cap had shifted three inches during a March nor’easter. Water had been running directly into the flue for two seasons. Replacement with a stainless DuraFlex cap and fresh mounting hardware ran $340. If your cap is more than ten years old and you live within a few miles of the water, assume it’s suspect.
Crown Repair
Severn’s original 1960s-1980s crowns were often poured thin and flat, without the proper slope or overhang to shed water. Freeze-thaw cycles in the Chesapeake watershed attack these crowns aggressively. Crown repair involves removing loose material, rebuilding the structural layer, and reshaping for proper drainage. Typical range in Severn: $450-$750. We only recommend repair when the underlying concrete is sound - if the crown is cracked through or spalled deeply, coating won’t save it.
Crown Coating
For crowns with surface cracking, minor spalling, or early-stage deterioration, crown coating is the cost-effective solution. We use Gelco CrownCoat, a flexible waterproofing compound that bridges hairline cracks and prevents further moisture intrusion. In Severn’s climate, where humidity cycles are constant and freeze-thaw is seasonal, this coating adds 10-15 years of protection. Typical cost: $280-$420. We apply it only after cleaning and inspecting the crown - no coating over hidden damage.
Multi-Flue Cap
Many Severn colonials have multiple fireplaces sharing a single chimney chase. A multi-flue cap covers all flues with one integrated unit, eliminating the gaps between individual caps where water and debris enter. We fabricate these from stainless steel or copper, with proper clearance and ventilation for each flue. Multi-flue caps in Severn run $550-$890 installed, depending on chase dimensions and material. They’re worth considering if you’ve had water problems or if individual caps have blown off repeatedly.
Custom Cap
Non-standard flue sizes, decorative chimney pots, or historic requirements call for custom fabrication. We work with Copperfield and local sheet-metal shops to build caps that fit precisely and match your home’s character. Custom work starts around $650 and scales with complexity. Lead time is typically 7-10 days.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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 Severn
We stock and install professional-grade materials from DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, and Copperfield - no builder-grade substitutes. For Severn customers, this means faster turnaround and no waiting on special orders for standard sizes. A cap replacement doesn’t require two visits because we didn’t have the right hardware. Our trucks carry stainless caps in common flue dimensions, Gelco CrownCoat for same-day crown work, and the specialized fasteners that salt-air corrosion demands. When a custom solution is needed, we specify it precisely and communicate lead time upfront.
Common Chimney Cap & Crown Problems We See in Severn Homes
- Galvanized cap corrosion. The salt air near Severn attacks galvanized steel at the mounting flanges and spark-arrestor mesh. Within 8-12 years, screws fail and caps shift or blow off entirely during nor’easters. We see this most often on homes east of Telegraph Road, closer to the Chesapeake.
- Thin, flat original crowns. The 1960s-1980s brick colonials that dominate Severn’s housing stock were built with crowns poured too thin and too flat. Decades of freeze-thaw cycling have caused them to spall and crack. Water runs down the exterior of the flue liner, producing efflorescence on the brick or rust on the damper.
- Failed roof-to-chimney flashing. Many Severn homes were built with roofing cement rather than proper step flashing at the chimney intersection. The constant humidity cycling here breaks that seal long before the roof itself fails. Water enters behind the flashing and travels down the chase, often mistaken for a crown leak.
- The Fort Meade assumption gap. Roughly a third of the chimneys we service in Severn are on rental properties. Each 2-3 year tenant rotation breaks the chain of custody for maintenance records. A cap replaced in 2019 is completely unknown to the 2024 tenant. We routinely find caps that are missing, damaged, or wrong for the flue because no one knew to check.
Pricing for Chimney Cap & Crown in Severn, MD
| Service | Typical Range in Severn |
|---|---|
| Standard cap replacement (stainless, single flue) | $280-$450 |
| Multi-flue cap installation | $550-$890 |
| Crown coating (Gelco) | $280-$420 |
| Crown repair (partial rebuild) | $450-$750 |
| Custom cap fabrication | $650+ |
| Level-2 camera inspection with photo report | $89 (Seasonal Tune-Up special) |
What moves the price? Flue height and accessibility, chase dimensions for multi-flue caps, extent of crown damage, and whether the existing cap has corroded in place and requires extraction. We inspect before we quote. The $89 Seasonal Tune-Up includes a Level-2 camera inspection - if we find cap or crown issues, we’ll show you the photos and give you a firm number before any work begins. No surprises on the bill.
We also offer $50 off any repair over $250, a free second opinion on any written estimate, and a permanent 5% senior and veteran discount.
We Also Serve Cities Near Severn
Our crews work throughout central Maryland, including Odenton, Crofton, Severna Park, and Pasadena. Each area has its own housing stock and weather exposure patterns, and we adjust our recommendations accordingly. If you’re near the Severn border, call - we’ll tell you honestly whether your address falls in our standard service area.
Serving Severn, MD - Our Local Coverage Area
We’re based in the Severn 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 Severn
Every fall, before burning season. Salt-air exposure in Severn accelerates corrosion, and the Fort Meade rental churn means maintenance records are often lost. If you don’t know when your cap was last replaced, assume it’s due. Call (443) 464-2560 and we’ll inspect it as part of our $89 Seasonal Tune-Up.
You probably don’t, and that’s the problem. We were called to a split-level off Reece Road near the Fort Meade gate where the tenant had just moved in and noticed water staining on the firebox ceiling. The chimney cap was a builder-grade galvanized model from the 1980s, and the salt air had eaten through the mounting screws and the spark arrestor mesh - the cap had actually shifted and was resting crooked on the crown. We replaced it with a stainless DuraFlex cap and coated the crown with Gelco, which stopped the leak and gave the landlord a documented service record for the next tenant file. If you have no records, start fresh with an inspection and documentation you control.
Crown coating is a surface waterproofing treatment for crowns with minor cracking and intact structure. Crown repair removes deteriorated material and rebuilds the crown’s shape and strength. If the crown is cracked through, spalled deeply, or no longer sheds water properly, coating won’t help - it needs repair. Our camera inspection and photo report show you which category you’re in. Call (443) 464-2560 for an exact assessment.
Both. A damaged or missing cap lets rain into the flue, and wet creosote is harder to remove and more acidic. In Severn’s humid summers, a flue that takes on moisture can develop glazed creosote that accelerates liner deterioration. The cap’s primary job is keeping water and animals out, but the secondary effect on creosote chemistry matters too.
Most Severn colonials with multiple fireplaces benefit from a multi-flue cap rather than individual caps. It eliminates the gaps between flues where water enters, and it’s more secure in high winds. Custom caps are only needed for non-standard flue sizes or decorative requirements. We’ll measure your chase and show you both options with firm pricing.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Severn and central Maryland since 1984.