Chimney Deep Cleaning
When brushing is not enough
No pressure. No surprise fees. A clear price before any work starts.
Glazed, third-degree creosote bakes onto the flue as a hard, shiny tar that no brush can scrape away, and it is the most flammable form of creosote a chimney can hold. Quick Chimney deep cleaning treats that glaze with a chemical creosote remover, known as PCR, that breaks the deposit down so it can finally be swept out. It is the right call when a standard sweep has hit its limit and the buildup is still there.
Warning signs you need chimney deep cleaning
Warning signs
- A shiny, tar-like or hardened black coating visible inside the flue or firebox
- A recent sweep that left dark glossy deposits the brush could not budge
- A heavy, tarry odor from the fireplace that lingers even after a standard cleaning
- A history of slow, smoldering fires, closed-damper burning, or unseasoned wood
- Weak draft or smoke spilling into the room as the glaze narrows the flue
Why it mattersGlazed, third-degree creosote is the most flammable form of creosote, and a standard brush can't scrape it away.
It depends on what we find — chimney deep cleaning varies with your chimney's condition and access, so we don't publish a one-size-fits-all number.
You get a clear, free quote before any work starts. No surprise fees.
Free, no-pressure quotes — we never invent repairs you do not need.
Getting chimney deep cleaning handled
Tell us what is going on — online in about two minutes, or by phone. We come back fast with a clear, free quote and a plain-English explanation of what your chimney actually needs.
On the day we protect the space with drop cloths and HEPA vacuums, do the work properly, and leave it spotless. Urgent problems go to the front of the line.
Most jobs touch more than one part of the system, so we also handle chimney sweeping, safety inspections, masonry repair, crown repair, and cap installation — one crew, one visit where we can.
What is included
- Evaluation of the flue to confirm the stage and extent of creosote buildup
- Application of PCR chemical creosote remover to the glazed sections of the flue
- Time for the treatment to cure and break the glaze down, with a clear schedule for the return visit
- Mechanical sweeping to remove the loosened deposits once the treatment has done its work
- Dust containment with floor protection and vacuum filtration during every visit
- A plain-English summary of the flue's condition and how to keep glaze from coming back
Frequently asked questions
What is third-degree creosote, and why can't a normal sweep remove it?
Creosote builds in stages. By the third stage it has melted and rehardened into a dense, glassy glaze that bonds to the flue wall. Brushes glide over it instead of breaking it loose, so it takes a chemical treatment to dissolve the bond before the deposit can be swept out.
How does the PCR treatment actually work?
PCR is a creosote remover applied directly to the glazed areas of the flue. As it cures, it penetrates the glaze and chemically breaks it down, turning the hard deposit into a loose, brushable material. Once that happens, we sweep the flue to clear out what the treatment released. Heavy glaze sometimes needs more than one application.
Is the chemical safe to use in my chimney?
PCR is formulated specifically for use inside flues, and we apply it only to the chimney interior, not your living space. We contain the work area, control dust during the follow-up sweep, and walk you through any simple steps to take between visits, such as holding off on fires while the treatment cures.
Free quotes, always
A clear price before any work starts. No surprise fees, no pressure.
Urgent jobs first
Smoke backup, leaks, animals, storm damage go to the front of the line.
All of Massachusetts
Greater Boston to the Cape, North Shore to the Berkshires.
Two-minute booking
Pick a date and an arrival window online. We confirm fast.
Related chimney services
Book your chimney service today
Book online in about two minutes, or call and we will sort it out with you. Free quote, clear price, no pressure.
No pressure. A real person calls to confirm your time.
Check out our current chimney offers
All offers-
$199.99Chimney Cleaning
Creosote and soot out of your flue before they become a fire risk.
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$49.99Level 1 Chimney Inspection
Know your chimney is safe before the next fire — drone check included.
Mention the coupon when you book or call. No pressure. No surprise fees. A clear price before any work starts. See coupon details and terms.