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.
Before
After
Before
After
Before
AfterTrusted Chimney Cap & Crown for Silver Spring Homeowners
Our Chimney Cap & Crown in Silver Spring service typically costs between $280 and $1,400 depending on whether you need a simple cap replacement or full crown rebuild, and most jobs are completed in a single visit. Water intrusion through a failed cap or cracked crown is the leading cause of chimney deterioration in Montgomery County’s freeze-thaw climate, and catching it early saves thousands in structural repairs.
We’ve been repairing chimney caps and crowns in Silver Spring since 1984. In 42 years, we’ve seen what happens when a homeowner ignores a hairline crack in the crown through one more winter. The crack widens, water seeps into the brickwork, and by spring the face of the chimney is spalling. Russell Haines founded Hearthstone Chimney Co. on the principle that a sweep should explain what he sees, show the homeowner the photos, and let them decide without pressure. That hasn’t changed.
Our technicians carry Gelco and Olympia Chimney caps on the truck, stock HeatShield crown coating material, and complete most cap and crown jobs in Silver Spring in one visit. You get upfront pricing before we start, photos of the damage you can see for yourself, and our 90-Day Done Right Promise in writing. Call (301) 479-9806 - a live person answers, 24 hours a day.
What Our Chimney Cap & Crown Service Includes
Cap Installation
A chimney cap is the metal cover that sits atop your flue, keeping rain, animals, and debris out while letting smoke escape. In Silver Spring, where mature oak and maple trees shed leaves straight into uncapped flues every fall, a proper cap is essential. We measure your flue on site, fabricate or select a cap that fits precisely, and secure it with stainless steel fasteners that won’t rust out in five years. Our standard caps come with a lifetime warranty on the metal, and we prefer Gelco and Olympia Chimney models for their mesh screening that resists creosote buildup.
Cap Replacement
Caps don’t last forever. The mesh rusts through, the lid blows off in a March windstorm, or a previous installer used galvanized steel that rotted from the inside. When we replace a cap in Silver Spring, we inspect the flue tile beneath it for hidden damage that the old cap was masking. We once found a cracked flue liner in the Woodmoor neighborhood that had been dripping condensation behind the fireplace wall for two seasons. The homeowner only called because the cap had finally fallen off. We replaced the cap, documented the liner damage with camera photos, and the homeowner scheduled the liner repair before the next burning season.
Crown Repair
The crown is the concrete slab that tops your masonry chimney, sloped to shed water away from the flue. Crowns crack from thermal expansion, poor original construction, or simply age. In Silver Spring’s climate, where winter temperatures swing from 20°F to 50°F and back within a week, water trapped in a crown crack freezes, expands, and widens the damage exponentially. We repair crowns by chasing out the crack, filling with flexible masonry sealant, and applying a waterproofing agent rated for chimney applications. For crowns with extensive cracking but sound underlying structure, this restores protection without the cost of full replacement.
Crown Coating
Crown coating is a specialized cementitious overlay that resurfaces a deteriorated crown without removing the original concrete. We use HeatShield CrownCoat, a product we’ve applied on hundreds of Silver Spring chimneys over the years. The existing crown must be structurally sound - no loose chunks, no exposed rebar, no active leaks into the firebox. We pressure-wash the surface, apply a bonding agent, then trowel on the coating to create a new sloped surface with proper drip edges. The material cures to a hard, waterproof shell that flexes slightly with temperature changes. A typical CrownCoat application adds 15 to 20 years of service life to a middle-aged crown.
Multi-Flue Cap
Some Silver Spring homes, particularly the larger Colonials and split-levels built in the 1960s and 70s, have multiple flues sharing one chimney structure - one for the fireplace, one for the furnace, sometimes a third for a wood stove added later. A multi-flue cap spans the entire chimney top with a single protective roof and screening. We measure the full footprint, account for proper clearances between flues, and fabricate a cap that protects everything without creating draft problems. Multi-flue caps must be sized precisely; too small and rain blows in, too large and wind can create downdrafts that push smoke back into the house. We get it right the first time.
Custom Cap
Not every chimney fits a catalog part. Historic homes in Silver Spring’s Seven Oaks and North Woodside neighborhoods often have oversized flues, unusual tile configurations, or decorative chimney pots that a standard cap would ruin. We fabricate custom caps from stainless steel or copper, measured to your exact specifications, with finishes that complement the home’s architecture. A custom copper cap on a 1920s Tudor in Woodside develops a natural patina that matches the original roof flashing. We draft the design, show you a drawing before fabrication, and install with the same no-surprise pricing as our standard work.
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.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service for Chimney Cap & Crown
We work exclusively with professional-grade materials from manufacturers who stand behind their products the same way we stand behind our labor. We’ve installed hundreds of Gelco caps across Montgomery County - their stainless steel construction and welded seams hold up to Silver Spring’s wet winters without the corrosion we see in big-box store caps. Olympia Chimney supplies our multi-flue and specialty caps; their engineering documentation is thorough, which matters when we’re sizing a cap for a three-flue chimney in a home off Colesville Road.
HeatShield’s CrownCoat is our go-to for crown resurfacing - we’ve applied it for fifteen years and tracked its performance through freeze-thaw cycles that destroy lesser products. DuraFlex comes into play when crown damage has extended to the flue liner beneath, requiring a coordinated repair. Whether you have Gelco, Olympia Chimney, HeatShield, DuraFlex, or any other make on your chimney, we can service it, replace it, or upgrade it. We don’t install products we wouldn’t put on our own homes.
Signs You Need Chimney Cap & Crown Right Now
- Water stains on the ceiling near your fireplace. This means moisture is entering through the chimney top, running down the flue, and finding its way into your living space. In Silver Spring’s humid summers, that moisture also breeds mold behind the walls. The cap may be missing, the crown cracked, or the flashing failed at the chimney base - we diagnose with a camera inspection and show you exactly where the water originates.
- White efflorescence staining on exterior brick. Those powdery white deposits are minerals left behind when water evaporates out of the masonry. They mean water is getting in somewhere above, saturating the brick, and escaping through the porous surface. A sound crown sheds water before it reaches the brick; efflorescence is evidence the crown has failed. Left untreated, the brick faces begin to spall and fall away.
- Rust flakes in your firebox or on the damper. Your firebox and damper are not supposed to get wet. If they’re rusting, rainwater is entering the flue and running all the way down. This destroys metal components, weakens mortar joints, and in gas fireplaces can corrode the burner assembly. A proper cap stops this at the source.
- Animals or nesting debris in the flue. Squirrels, raccoons, and starlings view an uncapped chimney as ready-made housing. We’ve removed nests from Silver Spring chimneys in every season, including a starling colony in Kemp Mill that had packed the flue with twigs for three springs running. Beyond the blockage risk, animal waste is acidic and accelerates liner deterioration.
- Visible cracks or crumbling on the crown surface. Stand back from your house and look at the chimney top with binoculars. If you see alligatoring, exposed aggregate, or pieces missing from the crown edge, water is already penetrating. In Silver Spring’s climate, a cracked crown in October becomes a structurally compromised crown by April. We document the damage, explain your repair and replacement options with exact pricing, and let you decide the timeline.
Our Chimney Cap & Crown Process - Step by Step
- 1
Schedule your inspection. Call (301) 479-9806 and a live person will answer, any hour of any day. We’ll find a window that works for you - we don’t give four-hour arrival windows that waste your morning. Our technician will call when en route.
- 2
Level-2 camera inspection and documentation. We don’t guess at what’s wrong. Our technician runs a high-resolution camera up the flue and across the crown surface, capturing photos of cracks, spalling, water intrusion patterns, and any damage to the flue liner beneath. You see the same images we see, on a tablet screen, while the camera is still in the chimney. The verdict is explained in plain English - no jargon, no scare tactics.
- 3
Upfront pricing with options. Based on the inspection, we present one to three approaches: repair what’s damaged now, repair plus preventive coating, or full replacement if the crown is beyond saving. Each option has a fixed price, itemized on the estimate. The number on the estimate is the number on the invoice. We don’t “find” additional problems once work begins.
- 4
Professional installation with quality materials. Our background-checked, uniformed technicians arrive with the necessary materials - Gelco or Olympia Chimney caps, HeatShield CrownCoat, stainless steel fasteners, waterproofing agents - and complete most jobs in a single visit. We work carefully around your roof and landscaping, and we don’t leave until the work is documented with after photos.
- 5
Written warranty and follow-up. Every cap and crown job is backed by our 90-Day Done Right Promise - Krafted right, Every time, Your home first, Standing behind it. If anything isn’t right, we come back and make it right, no paperwork, no arguing. You also receive manufacturer warranties on materials: lifetime on stainless steel caps, 15 years on HeatShield CrownCoat applications. We keep your photos and documentation on file for future reference.
How Much Does Chimney Cap & Crown Cost in Silver Spring?
For detailed pricing, see our Chimney Cap & Crown cost guide. A standard single-flue cap replacement in Silver Spring typically runs $280 to $550, including removal of the old cap, flue tile inspection, and installation of a new stainless steel cap with proper fastening. Crown repair with crack sealing and waterproofing generally falls between $450 and $850, while a full HeatShield CrownCoat resurfacing averages $800 to $1,200 depending on crown size and accessibility. Custom caps or multi-flue installations range from $650 to $1,400, with copper and specialty finishes at the higher end.
Several factors move the price within these ranges. Chimney height and roof pitch affect labor time - a two-story chimney with a steep roof requires additional safety equipment and time. The condition of the existing flue tile matters; if we remove a rusted cap and find the top tile cracked, replacement adds to the scope. Accessibility from the street, presence of mature trees that limit ladder placement, and the need for custom fabrication all influence the final estimate.
How to avoid overpaying: get a second opinion if an estimate seems high or vague. We offer free second opinions on any written estimate from another company - just bring us the paperwork. Never agree to crown replacement without seeing photos of the damage yourself. A cracked crown that is otherwise structurally sound can often be repaired or coated for half the cost of rebuilding. And be wary of anyone who quotes a price without inspecting on site; cap and crown work varies too much for phone estimates to be reliable.
Our free estimate includes the Level-2 camera inspection, photos you can keep, a written verdict with options, and firm pricing valid for 30 days. There is no obligation to book. Call (301) 479-9806 to schedule yours.
Chimney Cap & Crown Near Silver Spring - Our Service Area
We repair and replace chimney caps and crowns throughout Montgomery County and into Prince George’s County, including Chimney Cap & Crown in Clinton, Chimney Cap & Crown in Chillum, College Park, Hyattsville, Suitland, Fairland, Greenbelt, Landover, Camp Springs, Calverton, and White Oak. Most Silver Spring appointments are scheduled within a few business days, and we carry common cap sizes and repair materials so we’re not ordering parts that delay your job. Whether you’re in the established neighborhoods off Georgia Avenue or the newer developments near White Oak, we know the local housing stock and the chimney problems that come with it.
Serving Silver Spring, MD - Our Local Coverage Area
We’re based in the Silver Spring area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Chimney Cap & Crown in Silver Spring
The cap is the metal cover that protects your flue opening from rain, animals, and debris. The crown is the concrete slab that tops your masonry chimney, sloped to shed water away from the flue and protect the brick below. Together they form your chimney’s first line of defense against water intrusion, which is the single largest cause of chimney deterioration in Silver Spring’s climate. Without both functioning properly, water enters the system, freezes in winter, and progressively destroys masonry, liners, and interior components. Call (301) 479-9806 for a free inspection if you’re unsure of your cap or crown condition.
Most cap replacements and crown repairs are completed in two to four hours. A full crown rebuild or custom cap fabrication may require a return visit, but we complete the majority of jobs in a single visit because our technicians arrive with materials and equipment for common scenarios. We’ll tell you the expected duration when we present your estimate, and we don’t leave until the work is finished and documented. Call (301) 479-9806 to schedule - estimates are free.
Standard cap replacement runs $280 to $550, crown repair with sealing and waterproofing costs $450 to $850, and crown resurfacing with HeatShield CrownCoat averages $800 to $1,200. Custom caps and multi-flue installations range from $650 to $1,400. Your exact price depends on chimney height, roof accessibility, flue condition, and material choice. We provide firm, itemized pricing after inspection, with no surprises on the bill. Call (301) 479-9806 for your free estimate.
Yes. We install and service Gelco, Olympia Chimney, HeatShield, and DuraFlex products, and we stock common cap sizes and repair materials for these manufacturers. If your existing cap or crown system is from another brand, we can assess its condition, repair it if feasible, or replace it with a professional-grade equivalent that meets or exceeds the original specification. Our technicians carry reference materials and sizing guides for all major brands. Call (301) 479-9806 with your brand and model information.
It can be. An active water leak into your firebox or living space, a missing cap with forecasted heavy rain, or a crown crack that has already caused interior damage should be addressed promptly to prevent further harm. That said, not every cracked crown requires immediate rebuilding. Our inspection determines whether the situation is urgent or can be scheduled at your convenience. We don’t invent emergencies to pressure a sale. Call (301) 479-9806 and we’ll assess your situation honestly.
Every job is backed by our 90-Day Done Right Promise in writing - if it’s not right, we come back and make it right, no arguing, no paperwork hassle. Material warranties vary by product: lifetime on stainless steel Gelco and Olympia Chimney caps, 15 years on HeatShield CrownCoat applications. We register manufacturer warranties on your behalf and keep copies in your file. This dual protection - our labor guarantee plus the manufacturer’s material warranty - is how we’ve operated for 42 years. Call (301) 479-9806 for details specific to your project.
Clear a path to your fireplace or stove area and move any fragile items from the mantel - our inspection requires roof access and interior camera work, and vibrations can occur. Ensure we have a clear driveway or parking space for our service vehicle, and let us know about any locked gates or aggressive pets. You don’t need to clean the fireplace beforehand; we work with chimneys in normal condition. We’ll call before arrival and explain each step as we proceed. Call (301) 479-9806 to book your appointment.
Schedule Your Chimney Cap & Crown Service in Silver Spring Today
A live person answers our phones 24 hours a day, 7 days a week - not a voicemail, not a callback queue. Call (301) 479-9806 to schedule your free estimate, or return to our home page to learn more about all our chimney services. We’ll inspect your cap and crown with a camera, show you the photos, explain your options in plain English, and give you firm pricing before any work begins. The 90-Day Done Right Promise covers everything we do. We’ve been serving Silver Spring since 1984, and we plan to be here when you need us next.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Silver Spring since 1984.