Chimney Sweep & Cleaning
Professional sweep and creosote removal with HEPA containment — plus a complimentary flue scan on every clean.
About this service
Montgomery County · Maryland
Chimney Service in Derwood
A chimney in Derwood works behind the walls for decades — until the season it doesn't, and the smoke, smell or stain shows up all at once. The housing here — tree-lined subdivisions and older village centers — around Shady Grove — sets the chimney workload in Derwood. Because Derwood is about 14 miles from our Beltsville headquarters, route days here run several times a week in season.
Derwood is about 14 miles from our Beltsville headquarters — typically a 35-minute drive in normal traffic. Every ZIP in 20855 is inside our standard pricing map; the price quoted is the price charged, with no distance surcharges. Every visit is documented with photos before and after, and the findings are written up the same day.
- Licensed & Insured
- NFPA 211 Inspections
- Photo-Documented
- ZIPs 20855
- 24/7 Emergency
Now Serving DerwoodMontgomery County · about 14 miles from our Beltsville headquarters
Local Chimney Notes
Local reality: chimneys in Derwood: Uncapped flues invite the neighborhood wildlife
An open flue in Derwood is an engraved invitation: chimney swifts in spring, squirrels and raccoons through the fall, and rain in every season. Nests block draft, animals die in flues, and water starts its slow work on the smoke shelf and damper. A stainless cap with a proper screen ends all three problems at once — it is the cheapest insurance a Montgomery County chimney can carry, and we check cap condition on every visit. Left alone for another season, it rarely stays the same size of problem. Every finding is photographed, because 'trust us' is not documentation.
Booked work comes with photo documentation as standard: the flue on camera, the cap and crown from the roof, and the findings written down where you can keep them.
Derwood at a Glance
County: Montgomery County
State: Maryland
ZIPs served: 20855
Distance: about 14 miles from our Beltsville headquarters
Homes: tree-lined subdivisions and older village centers
ZIP codes on this route: 1
Response: 24/7 emergency · same-week appointments typical
On Derwood Routes
What We Handle Most in Derwood
Liner replacement
When tiles crack, the durable answer is an insulated stainless liner sized to the appliance — scanned before, scanned after, warranted in writing.
Smoke and draft troubleshooting
Fireplaces that puff smoke into Derwood living rooms — diagnosed by geometry, damper and draft testing.
Sweeps with a camera finish
Rotary brushes, HEPA containment and a camera finish: the standard Derwood sweep, documented top to bottom.
Year-Round in Derwood
A Year of Chimney Care in Derwood
Fall — the honest deadline
September and October are when Derwood finds out what last winter did to its flues. Book the sweep before the first cold snap and the Montgomery County schedule still has room to breathe.
Winter — burning season rules
A Derwood winter runs on seasoned wood and a clean flue. Wet or green wood is the fastest creosote builder there is — if the woodpile is questionable, the sweep matters even more.
Spring — damage assessment
Spring is when winter's damage shows: crown cracks opened by freeze-thaw, flashing lifted by storms, nests started in open Derwood flues. A spring inspection prices repairs while they are still small.
Summer — the smart repair window
Dry summer weeks are when waterproofing and crown coats actually cure to spec. Derwood chimneys sealed in July shrug off the fall rains that find every crack in October.
Services in Derwood
Chimney Services Booked in Derwood
Chimney Cap Installation
Stainless steel, copper and multi-flue caps with animal guards and spark arrestors — measured, fitted and warrantied.
About this serviceDamper Repair & Replacement
Throat damper repair and top-sealing damper installation — stopping the draft, the drips and the energy loss at the flue's door.
About this serviceFull menu: all 21 chimney services — every one of them runs on our Derwood routes.
Customer Reviews
From Our Customers
BRBen RendallVerified Google Review
“Eagle Chimney were amazing. We appreciated their knowledge, professionalism, and cleanliness. Our chimney needed a good thorough cleaning and that is exactly what Eagle Chimney Service provided. I would highly recommend this company.”
FAQ
Chimney Questions in Derwood
How fast can a crew reach Derwood?
Derwood is about 14 miles from our Beltsville headquarters — typically a 35-minute drive in normal traffic. Regular appointments are batched into Montgomery County route days several times a week, and emergency calls — chimney fires, smoke in the home, carbon-monoxide alarms — are dispatched 24/7 at (855) 424-6217.
A bird got into our chimney last spring. How do we keep animals out for good?
A quality stainless-steel cap with mesh sides, sized to the flue and fastened to the crown, keeps birds, squirrels and raccoons out while letting smoke escape freely. In Derwood we also scan the flue first — old nesting material left behind is a blockage and a fire load, so the cap goes on only after the flue is clear.
Do I need an inspection if I only burn a few fires a year?
Yes — NFPA 211 recommends an inspection every year regardless of how much you burn. Birds nest, caps rust and crowns crack in Derwood chimneys whether the fireplace is used nightly or twice a season, and a light-use flue with a nest in it is a fire waiting for its first cold night. The written report you receive covers it either way.
How long does a sweep visit take?
A standard sweep with inspection at a Derwood home runs about 45 to 75 minutes once we are set up. Level 2 camera scans, multiple flues or repair quotes add time. We lay drop cloths, seal the firebox opening and HEPA-vacuum as we go — the room is left as clean as we found it. On our next Montgomery County route day we can show you yours on camera.
How much does a chimney sweep cost in Derwood?
It depends on the flue and its condition, so we quote one exact price for your Derwood home before any work begins — never an estimate that grows on the ladder. Our current seasonal offer (a full sweep with inspection) is listed on the deal page; everything beyond it is quoted in writing from the inspection findings. If you would like, we will document the answer with photos during a Derwood visit.
Will sweeping make a mess in my home?
No. The firebox is sealed with sheeting, the vacuum runs HEPA-filtered for the whole job, and floors are covered before the first brush moves. It is the part of the visit Derwood customers comment on most — the system is designed so soot goes into our containment, never into your living room.
Can you waterproof my chimney without changing how it looks?
Yes. We use vapor-permeable ChimneySaver waterproofing, which keeps liquid water out while letting the brick breathe — and it is invisible once cured, unlike film-forming sealers that blister and trap moisture. It is applied after any needed repointing, on sound brick across Montgomery County.
Book a Visit
Book Chimney Service in Derwood
Send the form with a day and time window that work for you, and dispatch confirms the slot — Derwood is about 14 miles from our Beltsville headquarters, which keeps scheduling simple.
- Exact written price before work begins
- Photos of your flue before and after
- Serving ZIPs 20855
Prefer to talk? Call (855) 424-6217 — answered 24/7.
Get a Free Estimate
A few details here and dispatch calls back to confirm your slot. Rather talk it through? Call (855) 424-6217.
✓ Request received — thank you!We will call you shortly to confirm your appointment. If it is urgent, call us now at (855) 424-6217.
Nearby Communities We Serve
Our Derwood stops are planned as a loop with the nearest communities — Gaithersburg, Olney and Rockville — which is how same-week appointments stay possible here even in October. Homes just outside Derwood in Gaithersburg (starting at ZIP 20877) book through their own page or this one; dispatch sorts the route, not the customer. Measured from the center of Derwood, the nearest stops are Gaithersburg (about 3 miles), Olney (about 3) and Rockville (about 4) — straight-line distances, before the truck's actual route.
- Chimney Service in Gaithersburg20877
- Chimney Service in Olney20832
- Chimney Service in Rockville20850
- Chimney Service in North Bethesda20852
- Chimney Service in Montgomery Village20886
- Chimney Service in Aspen Hill20906
- Chimney Service in Garrett Park20896
- Chimney Service in Brookeville20833
Chimney Trouble in Derwood?
Talk to a specialist — photo-documented inspections and upfront written estimates, about 14 miles from our Beltsville headquarters.