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.
Fast, Reliable Chimney Liner & Rebuild Across Dunn Loring
Chimney liner and rebuild work in Dunn Loring typically runs from $1,800 for a straightforward stainless steel liner replacement to $8,500 or more for a full chimney rebuild with two new flues. Most inspections are scheduled within a few days, and our Chimney Liner & Rebuild crew completes the majority of liner installations and partial rebuilds in a single visit. Call (571) 489-4365 - a live person answers, every hour of every day.
We’ve been working on Dunn Loring chimneys for decades. The brick colonials and split-levels off Gallows Road, the ranchers near the Dunn Loring-Merrifield Metro station, the double-flue stacks in the neighborhoods around Idylwood Road - we’ve seen what Northern Virginia’s freeze-thaw winters do to them, and we know what Fairfax County inspectors want to see before they’ll sign off on a sale. Our dispatch is coordinated from our Washington, DC office, but our trucks are in Dunn Loring regularly, and we carry the liners, crowns, and refractory materials to handle most jobs without ordering parts.
Why Hearthstone Chimney Co. Is Dunn Loring’s Preferred Chimney Liner & Rebuild Company
Dunn Loring homeowners call us because we show them what we find. Every Level-2 inspection ends with photos you can see and a plain-English verdict - documented like an engineer, explained like a craftsman. No jargon, no scare tactics, just the condition of your flue, your crown, your mortar joints, and what needs to happen now versus what can wait.
We’ve served local communities for over 42 years. That matters in a place like Dunn Loring, where the same house changes hands three times in a decade and the new owner wants to know who worked on the chimney last. We’re still here. We’ll be here in thirty more years. That’s why we put our 90-Day Done Right Promise in writing with no arguing - if it’s not right, we come back. Krafted right, Every time, Your home first, Standing behind it.
Our technicians are background-checked and uniformed. They arrive with the materials to finish most jobs in one visit, and the price we quote upfront is the price on the invoice. No surprises on the bill. That’s a square deal, and it’s how we’ve worked since 1984.
A live person answers our phones 24 hours a day, 7 days a week. Not a voicemail, not a callback queue. When you’re staring at a Fairfax County inspector’s deficiency notice with a closing date two weeks out, you need someone who picks up.
Our Chimney Liner & Rebuild Services in Dunn Loring
Stainless Steel Liner Installation
Dunn Loring’s mid-century brick colonials and split-levels were built with terra cotta flue liners that crack predictably at 50 to 70 years old. A stainless steel liner - we install insulated DuraFlex and Gelco systems - creates a new, properly sized flue inside the existing chimney, containing flue gases and protecting the surrounding masonry. For homes near the Dunn Loring-Merrifield Metro with oil-to-gas conversions, this is often the only way to bring an oversized original flue into compliance with current Fairfax County codes. Most installations run $2,200-$3,800 for a single flue, depending on height and whether the smoke chamber needs parging.

Flexible Liner Systems
Not every Dunn Loring chimney is straight. The offset flues in some 1960s split-levels off Gallows Road require a flexible liner that can navigate bends without losing draft performance. We use professional-grade flexible stainless systems from DuraFlex, sized precisely for the appliance they’re serving - fireplace, furnace, or water heater. A flexible liner installation in Dunn Loring typically costs $2,600-$4,200, with the higher end covering double-bend offsets and insulation wraps for exterior chimneys.

Liner Replacement
When a terra cotta liner has cracked through its full height or suffered spalling damage that exposes the chimney wall to flue gases, partial repairs aren’t enough. We remove the damaged sections - or the entire original liner if necessary - and install a new system engineered for your current appliances. In Dunn Loring, this work often reveals deferred crown damage and deteriorated mortar joints that need attention before the new liner goes in. A full liner replacement with associated crown and mortar repair runs $3,500-$6,000.

Partial Rebuild
Sometimes the liner is sound but the structure around it isn’t. Spalled brick faces, deteriorated crown shoulders, and failed flashing let water into the chimney stack, accelerating freeze-thaw damage through Northern Virginia’s volatile winters. Our partial rebuilds address the damaged courses and crown while preserving sound masonry below. On a typical Dunn Loring colonial with crown and upper-course damage, expect $2,800-$5,500.

Full Chimney Rebuild
For chimneys where the damage extends below the roofline - extensive mortar failure, leaning stacks, or multiple cracked flues with compromised surrounding brick - we dismantle and rebuild from a stable point upward. This is serious work, and we don’t recommend it unless we’ve documented the damage with camera inspection and shown you the photos. A full rebuild in Dunn Loring, including new flue liners, runs $6,500-$12,000 depending on height, brick matching, and whether we’re working with one flue or two.

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 Dunn Loring
We work exclusively with professional-grade materials - no builder-grade substitutes. For Dunn Loring installations, we stock DuraFlex stainless liners and components, HeatShield refractory systems for smoke chamber restoration, and Gelco liner products for specific appliance configurations. Olympia Chimney caps and accessories round out our standard inventory. Because we keep these materials on hand, most Dunn Loring jobs don’t wait on parts. When a Fairfax County inspector’s notice arrives with a closing deadline attached, that turnaround matters.
Common Chimney Liner & Rebuild Problems We See in Dunn Loring Homes
- Original terra cotta liners cracking at 50-70 years old. Dunn Loring’s housing stock was built in a concentrated wave from 1950 to 1975, which means thousands of chimneys hit this failure window simultaneously. Northern Virginia’s repeated freeze-thaw cycling accelerates the damage - water infiltrates hairline cracks, expands when it freezes, and widens them through dozens of thermal cycles each winter.
- Gas appliances vented into oversized oil-furnace flues. When Dunn Loring homes converted from oil to gas, many chimneys were never properly relined. The resulting weak draft produces condensation inside the flue, accelerating liner deterioration and producing the deficiency notices Fairfax County inspectors routinely flag during real estate transactions near the Metro station.
- Deferred crown and flashing repairs letting water into aging mortar joints. What looks like cosmetic spalling on brick faces often signals deeper moisture intrusion. Once water reaches the liner interface, freeze-thaw damage compounds quickly - and the repair that could have been a crown rebuild becomes a liner replacement or partial rebuild.
- Double-flue chimneys with improper separation between fireplace and utility flues. Many Dunn Loring colonials have this configuration, and it’s frequently oversized for modern gas equipment. Without proper liner separation and sizing, flue gases can migrate between channels or fail to achieve adequate draft, creating both safety and code-compliance issues.
Pricing for Chimney Liner & Rebuild in Dunn Loring, VA
Here’s what chimney liner and rebuild work actually costs in Dunn Loring’s market:
| Service | Typical Range |
|---|---|
| Stainless steel liner (single flue, straight) | $2,200 - $3,800 |
| Flexible liner with offset navigation | $2,600 - $4,200 |
| Liner replacement with crown/mortar repair | $3,500 - $6,000 |
| Partial rebuild (crown, upper courses) | $2,800 - $5,500 |
| Full chimney rebuild with new liners | $6,500 - $12,000 |
| Level-2 camera inspection with photo report | $250 - $350 |
What moves the number? Height of the chimney, number of flues, accessibility for scaffolding, and whether we’re matching existing brick. Every estimate we provide is itemized and agreed before work begins - the number on the estimate is the number on the invoice. 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. Call (571) 489-4365 for a free estimate.
We Also Serve Cities Near Dunn Loring
Our crews work throughout the Dunn Loring area and into Dunn Loring‘s neighboring communities - Merrifield, Vienna, Falls Church, and Annandale. The same mid-century housing stock, the same freeze-thaw climate, the same Fairfax County inspection standards apply across this corridor, and we carry the same materials and documentation standards to every job.
Serving Dunn Loring, VA - Our Local Coverage Area
We’re based in the Dunn Loring 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 Liner & Rebuild in Dunn Loring
Not necessarily both, but both need separate, correct evaluation. The fireplace flue and the utility flue serve different appliances with different venting requirements, and in Dunn Loring’s double-flue chimneys we frequently find one liner failed while the other remains serviceable. The utility flue is more often the problem child - original oil-furnace sizing is wrong for modern gas equipment, and Fairfax County inspectors flag this routinely. We camera-inspect both flues and give you a separate verdict on each. Call (571) 489-4365 for an exact quote - estimates are free.
It’s the freeze-thaw cycling, not the absolute cold. Dunn Loring sits in a transitional mid-Atlantic zone where temperatures cross the freezing point repeatedly through winter - dozens of times, some years. Water infiltrates crown cracks and mortar joints, expands when it freezes, and contracts when it thaws, progressively spalling brick and opening gaps. Areas with more stable winter temperatures, even colder ones, don’t experience this mechanical fatigue at the same rate. The combination of 60- to 70-year-old original crowns and this cycling makes crown rebuilds and re-casting standard maintenance here. Call (571) 489-4365 for an exact quote - estimates are free.
Start with a Level-2 camera inspection that produces photos and a written report - that’s what the buyer’s inspector should have seen, and it’s what you’ll need to clear the deficiency. Because the Dunn Loring-Merrifield Metro station drives unusually brisk real estate turnover for such a small community, chimney sweeps here frequently get called in specifically to produce Level-2 inspection reports for closings - and the combination of 60-year-old unlined chimneys, deferred crown repairs, and gas appliances vented into oversized flues makes Fairfax County inspector deficiency notices a routine part of the local transaction landscape. We document exactly what the inspector found, what Fairfax County requires, and what the timeline looks like. Most closing-related repairs can be completed within a week if materials are in stock. Call (571) 489-4365 for an exact quote - estimates are free.
Sometimes, if the damage is localized and accessible. HeatShield refractory systems can seal cracked terra cotta in specific zones, and minor spalling can be addressed with targeted parging. But we don’t recommend partial repairs when the liner has cracked through its full height, when multiple segments are involved, or when the underlying cause - improper sizing for a gas appliance, for example - hasn’t been corrected. On a 1962 split-level off Idylwood Road near the Dunn Loring-Merrifield Metro, our crew found a double-flue masonry chimney with the original terra cotta liner cracked through its full height and third-degree creosote glazed across the smoke chamber and damper. We installed an insulated DuraFlex stainless liner in the fireplace flue, re-cast the chimney crown, and rebuilt the spalled brick at the crown shoulder. Two weeks later the seller’s realtor had a clean Level-2 report to hand the buyer’s inspector. Partial repair wouldn’t have solved that. Call (571) 489-4365 for an exact quote - estimates are free.
Annually for the fireplace flue if it’s used regularly, and any time the utility appliance changes or the home sells. For Dunn Loring homes with multiple fireplaces and flues - common in the larger colonials and split-levels - we recommend a coordinated inspection that evaluates all flues and their interaction. The 90-Day Done Right Promise covers all our liner and rebuild work: in writing, no arguing. Call (571) 489-4365 for an exact quote - estimates are free.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Dunn Loring and Northern Virginia since 1984.





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