Chimney Cap
The crowning detail on your roofline — a chimney cap that looks intentional.
Learn moreInstallation · From $500
Top-Sealing Damper Installation
A throat damper is a metal plate resting on a metal frame — it never truly seals, which is why an idle fireplace still pulls conditioned air up the flue and drops cold air back into the room. A top-sealing damper mounts at the crown instead and closes onto a silicone rubber gasket, sealing the whole flue at the top. It is worked by a stainless cable running down to a handle in the firebox, and while it is up there it doubles as a rain and animal cap. Flue size, chimney height, and whether the crown needs patching to give the unit a flat, sound bed are what change the price. A multi-flue chimney needs one unit per flue.
Duration
1–2 hours
Warranty
1-year workmanship
Built to
NFPA 211 · IRC
Human reply
< 2 min
What is it
What is top-sealing damper installation?
A throat damper is a metal plate resting on a metal frame — it never truly seals, which is why an idle fireplace still pulls conditioned air up the flue and drops cold air back into the room. A top-sealing damper mounts at the crown instead and closes onto a silicone rubber gasket, sealing the whole flue at the top. It is worked by a stainless cable running down to a handle in the firebox, and while it is up there it doubles as a rain and animal cap. Flue size, chimney height, and whether the crown needs patching to give the unit a flat, sound bed are what change the price. A multi-flue chimney needs one unit per flue.
Every top-sealing damper installation includes:
- Gasketed top-sealing damper sized to your flue and set at the crown
- Stainless operating cable run to a firebox handle
- Rain and animal exclusion built into the same unit
- Crown bed checked and patched so the damper seats flat
- Seal verified and operation demonstrated before we leave
Scoped from a graded inspection
At Space Fireplace Services, a top-sealing damper installation is never guesswork. We scope every job from a graded, photographed inspection first — the NFPA 211 level the evidence calls for — so the work is matched to what your flue and masonry actually need, with the report to prove it. The documented inspection is the record the top-sealing damper installation is built on.
Chimney inspectionWhy choose us
Why DFW homeowners pick Space Fireplace for top-sealing damper installation.
We've worked on 1,000+ DFW homes over 10+ years. Every job — small sweep or full rebuild — runs the same way: certified technicians, written quotes, photo reports, warranty in writing.
10+
Years experience
CSIA
Certified techs
23
Metros covered
CSIA-certified inspectors only
Written quote before any work begins
1-year workmanship warranty
Insurance-grade photo documentation
Who we are
Space Fireplace Services. 10+ years on DFW chimneys.
Family-owned, CSIA-certified, NFPA 211–compliant. We're the team you call when you want it done right the first time — no rotating subcontractors, no upsell pressure, no surprises. Same techs, same trucks, same standard.
CSIA Certified
Chimney Safety Institute of America
NFPA 211 Compliant
Code-compliant on every job
Owner on every job
Personal accountability, every time
1-year workmanship warranty
In writing, every job
Space Fireplace
DFW Metroplex · CSIA-Certified
NFPA 211
Code compliant
Top-Sealing Damper Installation by location
Dallas, TXFrisco, TXPlano, TXFort Worth, TXRichardson, TXAllen, TXMcKinney, TXArlington, TXIrving, TXGarland, TXGrand Prairie, TXMesquite, TXCarrollton, TXDenton, TXLewisville, TXFlower Mound, TXThe Colony, TXCoppell, TXGrapevine, TXSouthlake, TXColleyville, TXKeller, TXTrophy Club, TXWestlake, TXHighland Park, TXUniversity Park, TXAddison, TXFarmers Branch, TXDuncanville, TXDeSoto, TXCedar Hill, TXLancaster, TXRowlett, TXRockwall, TXWylie, TXSachse, TXMurphy, TXFairview, TXProsper, TXCelina, TXLittle Elm, TXArgyle, TXRoanoke, TXHaslet, TXNorth Richland Hills, TXHurst, TXEuless, TXBedford, TXWatauga, TXBurleson, TXMansfield, TXMidlothian, TXWaxahachie, TXEnnis, TXKaufman, TXTerrell, TXForney, TXHeath, TXFate, TXRhome, TXHouston, TXSugar Land, TXThe Woodlands, TXPearland, TXLeague City, TXConroe, TXMissouri City, TXAtascocita, TXKingwood, TXCypress, TXSpring, TXKaty, TXFriendswood, TXHumble, TXTomball, TXRichmond, TXAustin, TXRound Rock, TXCedar Park, TXGeorgetown, TXLeander, TXSan Marcos, TXPflugerville, TXKyle, TXHutto, TXLakeway, TXBuda, TXManor, TXBastrop, TXBee Cave, TXDripping Springs, TXSan Antonio, TXNew Braunfels, TXSchertz, TXCibolo, TXSeguin, TXConverse, TXBoerne, TXUniversal City, TXLive Oak, TXLeon Valley, TXFair Oaks Ranch, TXHelotes, TXAlamo Heights, TXFloresville, TXBulverde, TXGarden Ridge, TX
FAQ
Common questions about top-sealing damper installation.
How often should the chimney behind a fireplace be swept?
Plan on a Level 1 inspection every year — that's the NFPA cadence — with an actual sweep once buildup reaches 1/8" of creosote. For a fireplace you light through the season, that usually lands at once a heating season. Think of it as the upkeep that keeps the centerpiece of the room clean, drawing well, and ready to look its best.
Are the people working on my fireplace certified?
Yes. The inspectors who assess your chimney hold current CSIA (Chimney Safety Institute of America) certifications — you can confirm them in the CSIA member directory at csia.org — and our fireplace installations are handled by NFI specialists. The craft that makes a hearth a showpiece starts with the people standing in front of it.
Can you come out fast when something goes wrong?
Yes — emergency response is available 24/7 (subject to crew availability) for active water leaks, an animal trapped in the flue, post-fire damage, and storm damage, same-day in most cases. A fireplace is the heart of a room; when it's at risk, we treat it that way.
Will I see a written quote before any work starts?
Always. You get a written quote before a single tool comes out, with photos of exactly what we found. Final pricing tracks the chimney's real condition and anything additional the inspection surfaces — no surprises, just a clear picture of what your fireplace needs.
Is there a maintenance plan that keeps it all on schedule?
Yes — our annual maintenance membership runs $19.99/month ($240/year) and covers a yearly Level 1 inspection and sweep ($248 value), priority scheduling, 10% off all repairs, and emergency-response priority. Cancel anytime, no contract. It's the quiet way to keep your hearth looking and working its best year after year.
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10+
Years
NFPA 211
Compliant
CSIA
Certified
< 2hr
Response
Ready when you are
Talk to a CSIA-certified expert today.
Free written quote. Same-week scheduling. 24/7 emergency response when you need it.
Licensed & Insured Same-Week Scheduling Written Quote, Always
Emergency
24/7 Response
Active leak, animal in flue, post-fire damage, or smoke event? Real humans on the line 7 AM to 12 AM every day — replies in under 2 minutes. Tech dispatch within 2 hours during business hours, subject to crew availability after-hours.
Emergency line