Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 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 Repair Across Clayton
If you’ve spotted crumbling mortar at the crown or flaking brick on a Clayton chimney, the repair follows from what a camera finds inside the flue. We send independent local chimney professionals to homes across Clayton, with fast dispatch from 7am to 7pm and a free written estimate before any work is booked. Our technicians have up to 12 years of experience, and they read Clayton chimneys for what they usually are: 1920s to 1950s masonry built for coal, converted to wood, and now venting gas appliances it was never sized for. Call (866) 596-7310.
Why Clayton Homeowners Call Hawk Chimney Sweep for Chimney Repair
Homeowners in Clayton call us because the first thing we do on a repair call is look, not sell. The Hawk inspection standard is a methodical, top-to-bottom assessment of the full flue system – crown, masonry, flashing, tile liner, smoke chamber, damper – and you see the camera footage yourself before anything is recommended. That matters in a town where a lot of the chimneys are original and high-value, and where an aggressive brush or an unnecessary reline can damage masonry and liners that deserve careful handling.
We handle sweep, inspection, and repair under one company, so there’s no handoff between a sweep crew and a mason and no gap where nobody owns the finding. We work with professional-grade materials from brands like HeatShield, DuraFlex, and Copperfield rather than generic substitutes. Response to Clayton is quick, and the estimate is always free and written. If your chimney can safely wait, we’ll tell you that too. That’s the standard we hold to across Clayton.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Chimney Crown Repair in Clayton
Chimney Crown Repair in Clayton usually starts with a crown that has cracked along its overhang after a freeze-thaw winter. The crown is the concrete cap at the top of the stack, and when it cracks, water runs into the masonry below instead of shedding off. In a Clayton home with an original single-wythe brick chimney, that water freezes, spalls the brick face, and works into the mortar joints. A typical crown repair in Clayton runs $350 – $700, and a full crown rebuild with proper slope and overhang runs $700 – $1,400. The written estimate sets the final price.
Crown Cracks and Water Entry
A hairline crack can let in enough water over a Missouri spring to saturate the chimney’s brick. We check the crown’s slope and its overhang past the masonry, since a flat or short crown drains toward the flue instead of away from it. Where the crown is sound, sealing it is often all that’s needed.
Crown Rebuild or Seal
When a crown is broken through or pulling away from the stack, a rebuild is the honest fix. We form a new crown with a slope and an overhang that sheds water clear of the brick. When the damage is surface-only, a sealant is the smaller, cheaper job.
Chimney Repair Companies in Clayton
Choosing among Chimney Repair Companies in Clayton comes down to one question: will they show you the evidence before they quote the work? This is where the worst upselling in the trade happens, usually a fast pitch for a full reline before anyone has run a camera. Our approach is inspection-first. Nothing is recommended without camera footage and photos you can see for yourself, and we’ll say plainly when a repair can wait. A Level 2 camera inspection typically runs $150 – $350 in Clayton, and it’s the foundation for any repair quote you can trust.
Repair or Reline
Cracked clay tile and gaps in the joints are common in Clayton’s older chimneys, but not every crack means relining. HeatShield resurfacing can restore a deteriorated flue liner that’s still structurally sound, a repair most sweep-only companies aren’t equipped to perform. A full DuraFlex flexible liner is the answer when the liner has failed outright or is undersized for the appliance it now serves.
What a Written Quote Should Show
A quote worth signing names what’s being fixed and why, backed by photos and footage. It separates crown work, masonry, and liner work as line items so you can see the total. Ours is free, written, and set per job before anything is booked.
Trusted Brands We Service in Clayton
We install and work with a defined portfolio of professional chimney products: HeatShield for flue resurfacing, DuraFlex flexible liners for relining, plus Gelco, Olympia Chimney, Famco, and Copperfield. These are professional-grade materials chosen for the job at hand, not big-box substitutes. Because we don’t carry parts on a truck, the materials for your Clayton repair are ordered and sized to your flue, then installed – usually with a fast turnaround once the estimate is approved. A Clayton chimney built for coal rarely matches a standard off-the-shelf liner, so sizing matters. Ask us which brand fits your flue and why. Call (866) 596-7310.
See the difference
Before
After
Before
After
Before
AfterCommon Chimney Repair Problems We See in Clayton Homes
- Unlined or undersized clay flues venting modern gas furnaces. Many original Clayton chimneys were built to vent coal, then converted to wood, and now carry a gas furnace or gas fireplace. A flue sized for the wrong appliance can draft poorly and produce smells that get misdiagnosed as a chimney problem rather than a sizing problem.
- Spalling brick and cracking mortar joints. Clayton’s freeze-thaw winters push water into brick faces and mortar, and a missing chimney cap lets rain in from above. The result is flaking brick, crumbling joints, and a crown that cracks along its edge.
- Third-degree creosote glaze. Fireplaces converted from coal can build a hard, glazed creosote layer that a brush won’t remove, and some sweeps wrongly sell it as routine cleaning. It’s a fire hazard that calls for a proper assessment, not a quick pass with a brush.
- Missing caps and failing flashing. Heavy spring rains find every gap around the flashing where the chimney meets the roof. Water tracking in at the flashing or through an open flue top is a frequent cause of interior stains that homeowners blame on the roof.
Pricing for Chimney Repair in Clayton, MO
Repair pricing here reflects the housing stock: original masonry in high-value homes, where careful work costs more than a fast brush-and-go. As a guide, a typical chimney crown repair in Clayton runs $350 – $700, a crown rebuild $700 – $1,400, and a Level 2 camera inspection $150 – $350. Mortar repointing and tuckpointing of a deteriorated chimney run roughly $600 – $1,800 depending on how much of the stack is affected. HeatShield flue resurfacing and DuraFlex relining are quoted per flue once the camera confirms what’s needed. Because we don’t want you guessing, every price comes as a free written estimate that sets the final number before work is booked. Nothing is added later without your approval.
We Also Serve Cities Near Clayton
Homeowners just outside the city call us too. We connect homeowners in University City, St. Louis, Webster Groves, and Overland with the same inspection-first repair approach we bring to Clayton. If you’re near the downtown core or Old Town and not sure whether you’re in our coverage, call and we’ll confirm. Our chimney repair team handles crown work, masonry, flashing, and relining across the area.
Serving Clayton, MO – Our Local Coverage Area
We serve Clayton and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs About Chimney Repair in Clayton
Not always. An original clay tile flue can stay in service if a camera inspection shows the tiles are intact and correctly sized for the appliance venting into it. Clayton’s coal-era chimneys often have undersized or unlined flues now carrying a gas furnace, and that’s when relining becomes the safe answer. We show you the footage before recommending either way. Call (866) 596-7310 for a free estimate.
Third-degree creosote is a hard, glazed layer that a brush won’t remove, and you can sometimes see it as a shiny, tar-like coating inside the flue. In Clayton fireplaces converted from coal, it’s common enough that a sweep should check for it rather than assume a normal brushing will do. A camera inspection confirms it. Call (866) 596-7310 for a free estimate.
It depends on how far the damage goes. Surface cracking can often be sealed, while a crown that’s broken through or pulling away from the stack calls for a rebuild with proper slope and overhang. A typical crown repair in Clayton runs $350 – $700; a rebuild runs $700 – $1,400, set by the written estimate. Call (866) 596-7310 for a free estimate.
A Level 2 inspection is a camera inspection of the flue plus a full visual check of the accessible chimney system, and it’s what a repair should be based on. It documents cracks, gaps, and blockages you can see for yourself, so a recommendation rests on evidence rather than a guess. It typically runs $150 – $350 in Clayton. Call (866) 596-7310 for a free estimate.
No, we’re closed Saturday. We’re open Sunday through Friday, 7am to 7pm, and the estimate is free whenever you book it. We answer 24/7 by phone, and a call outside dispatch hours is booked into the next opening, Sunday through Friday, 7am to 7pm. Call (866) 596-7310 to get on the schedule.
Whether your Clayton chimney needs a crown repair, repointing, or a liner-safety inspection, start with a free written estimate and a camera you get to see. Call (866) 596-7310. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by the team at Hawk Chimney Sweep.