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.
HeatShield Chimney Liner & Rebuild in Boulder: What to Know First
We provide independent HeatShield chimney liner and rebuild service in Boulder, typically completing liner replacements in one to two days and partial rebuilds within a week. Every job starts with a camera-scan inspection and a written price before any work begins - no exceptions. If you own a HeatShield system and are seeing drafting issues, liner deterioration, or smoke chamber damage, call us at (970) 598-0453 for a free estimate with documented photo findings you can review yourself.
This page is for Boulder homeowners with HeatShield flue liners, smoke chamber products, or refractory systems who need honest diagnostics on whether repair or full rebuild is the right call. Corrine Halstead and our crew have worked HeatShield installations across Boulder County since 2009, from original builds in Table Mesa to retrofits in North Boulder.
How HeatShield Products Fail - and How We Fix Them
- HeatShield Cerfractory Foam liner resurfacing cracks or delaminates. This spray-applied system can develop hairline fractures where it meets the flue wall, especially in Boulder’s freeze-thaw cycles. We find this most often in homes built 1985-2005 where the original clay liner was coated rather than replaced. Our fix: remove the compromised foam layer, assess the substrate, and either reapply with proper surface prep or recommend a stainless steel liner if the clay base is too far gone.
- HeatShield Joint Repair (HSJ) fails at mortar joints between flue tiles. The epoxy-based joint system degrades when exposed to sustained moisture from chimney leaks - common in Boulder’s spring snowmelt season when flashing fails. We camera-scan to locate every compromised joint, then either re-do the HSJ application with improved crown drainage or move to a full liner replacement if water damage is systemic.
- Smoke chamber parging with HeatShield SCC breaks down near the damper throat. The transition from firebox to flue takes the most thermal stress, and we’ve seen SCC surfaces spall or pull away in homes above 5,400 feet where combustion dynamics differ from sea-level designs. We remove failed parging and reapply with modified cure times for altitude, or rebuild with poured refractory where structural integrity is lost.
- HeatShield UL-Listed stainless liners (HSF series) corrode at the collar connection. These flexible liners can develop pinhole leaks where the top plate meets the flue wall, usually from condensate pooling in Boulder’s temperature-inversion days. We replace the collar with a custom-fabricated part from our Haven buying network or source OEM HeatShield components when available - always documenting which route we took and why.
- Factory-built chimney chase covers with HeatShield components rust through at the drip edge. The galvanized covers used in some HeatShield chase assemblies don’t hold up to Boulder’s intense UV and occasional hail. We fabricate replacement covers in copper or stainless through our Famco and Copperfield supply lines, sized to the exact chase dimensions, and seal the transition with proper counter-flashing.
Our HeatShield Chimney Liner & Rebuild Process

- 1
Camera-scan inspection (NFPA 211 Level 2). We run a high-resolution camera the full length of your flue, record the footage, and mark timestamps for any damage. You get a copy under Haven Standard Clause 4.
- 2
Written scope and price. Corrine reviews the footage with you, points out what she sees, and delivers a written price before any work starts. Clause 1 of the Haven Standard - have it in writing.
- 3
Parts decision: OEM HeatShield or quality aftermarket. We check HeatShield availability through our network. If OEM lead times run long or the part is discontinued, we source equivalent-grade materials from DuraFlex, Gelco, or Olympia Chimney with full disclosure.
- 4
Repair or rebuild execution. Liner jobs get pulled and replaced with proper sizing for your appliance. Rebuilds follow manufacturer specs for clearances and materials. We photo-document every stage.
- 5
Smoke test and final camera verification. We verify draft performance, check for leaks, and run a final camera pass to confirm the repair.
- 6
Written warranty and archived record. You receive a written warranty, all photos, and camera footage stored in our system for future reference. The 365-Day Done Right Promise applies from day one.
Before
AfterWhat HeatShield Chimney Liner & Rebuild Costs in Boulder
| Service | Typical Range | What Moves the Price |
|---|---|---|
| HeatShield joint repair (HSJ), localized | $850 - $1,400 | Number of joints, flue accessibility, need for crown repair |
| Cerfractory Foam resurfacing, full flue | $2,200 - $3,800 | Flue length, diameter, condition of underlying clay |
| Smoke chamber parging (SCC) | $1,600 - $2,900 | Chamber size, damper removal required, structural rebuild needs |
| Stainless liner replacement (HSF or aftermarket) | $3,500 - $6,500 | Liner length, diameter, number of appliances connected, chase modifications |
| Partial chimney rebuild (crown, top courses, liner) | $4,800 - $8,500 | Height, scaffolding needs, masonry matching, liner spec |
| Full chimney rebuild with new liner | $12,000 - $22,000 | Total height, foundation condition, hearth reconstruction, appliance type |
These are real Boulder market ranges based on jobs we’ve completed in neighborhoods from Martin Acres to Dakota Ridge. Every estimate is free, and we honor our Free Second Opinion on any competitor’s written quote. Call (970) 598-0453 for your exact number.
Why Boulder Homeowners Call Emberly Chimney Cleaners Boulder for HeatShield Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009, and a significant share of those have been HeatShield systems in Boulder homes. Corrine Halstead knows the difference between a liner that needs resurfacing and one that needs replacement because she’s camera-scanned both outcomes - and shown the footage to the homeowner before quoting. The camera doesn’t guess. Neither do I.
Our background-checked, uniformed technicians carry license information on every page and every truck. You get a text when your tech is en route. Materials come through our Haven buying network from HeatShield, DuraFlex, Gelco, Olympia Chimney, Famco, and Copperfield - sourced to keep pricing honest, not to pad margins. Every job is backed by the 365-Day Done Right Promise and documented under Haven Standard Clause 4. Live phone support runs 24/7, no voicemail.
FAQs
HeatShield warranties apply to original installations and certified applicators; as an independent HeatShield service provider, our repairs carry their own written warranty through Emberly Chimney Cleaners Boulder rather than extending OEM coverage. We explain exactly what warranty applies before any work starts, and we document parts provenance so you have a record. Call (970) 598-0453 if you need clarification on your specific system.
The camera scan decides: if the underlying clay flue is structurally sound and damage is limited to the HeatShield coating, resurfacing or joint repair usually suffices; if we find shifting tiles, spalling, or gaps exceeding 1/2 inch, replacement is the safer call. We show you the footage and explain the measurement before you decide. Free estimates - call (970) 598-0453.
Many HeatShield components remain available through our supply network, though some original formulations have been superseded; when OEM parts are discontinued, we source equivalent-grade materials from DuraFlex, Gelco, or Olympia Chimney with full disclosure and matching specifications. We never substitute without your written approval. Call (970) 598-0453 to check availability for your model.
Most liner replacements are completed in one to two days; partial rebuilds requiring masonry work typically run three to five days, and full rebuilds vary by height and complexity. We give you a specific timeline in writing before work begins, not a range after you’ve committed. Call (970) 598-0453 for a schedule estimate.
A compromised liner allows heat, smoke, and carbon monoxide to reach combustible framing - the risk increases with use, not gradually but stepwise when the liner fails completely. We don’t use scare tactics; we show you the camera footage and explain what we see. Some conditions allow safe seasonal use with monitoring; others require immediate action. The only way to know is the inspection. Call (970) 598-0453 for a free camera scan.
Written by Corrine Halstead, Owner, Emberly Chimney Cleaners Boulder at Emberly Chimney Cleaners Boulder, serving Boulder and nearby areas.





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