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.
Olympia Chimney Crown Repair: The Hoffman Estates Owner’s Guide
Olympia Chimney crown repair in Hoffman Estates typically runs $380-$720 installed, depending on whether we’re sealing hairline cracks or pouring a new cast-in-place crown. We stock Olympia Chimney-compatible crown sealants and forming materials on every truck, and most crown jobs in Hoffman Estates are completed in a single visit. Homeowners usually spot the problem after a hard rain: water pooling on the fireplace hearth, a dark stain spreading down the masonry, or pieces of concrete flaking off the chimney top like loose gravel.
Which Olympia Chimney Models This Applies To
This applies to any Olympia Chimney system with a masonry or factory-built chimney terminating above the roofline. Olympia Chimney manufactures stainless steel liner systems, not the masonry crown itself, but their liner warranties require that the crown, cap, and flashing maintain watertight integrity. We’ve serviced Olympia Chimney liners in Hoffman Estates homes from the 300-series flex liners up through the heavy-wall 316Ti rigid systems, and the crown condition is always checked during our camera-scan inspection.
To identify your setup: look for the Olympia Chimney oval label on the liner collar just above the damper, or check your installation paperwork for the model prefix (OCL for flex, OCR for rigid). The critical measurement for crown work is the chimney’s outside dimensions at the top, not the flue size. A common gotcha in Hoffman Estates split-levels from the 1980s: the crown was poured as a single slab over multiple flues, and sealing one crack without addressing the whole surface traps water underneath. We source crown sealants rated for Illinois freeze-thaw cycles through our Haven buying network, including Gelco and Copperfield formulations that match Olympia Chimney’s thermal expansion specs.
Signs Your Olympia Chimney Crown Repair Is Failing

- Surface spalling and pitting. The concrete crown develops a rough, pitted texture as water penetrates the surface, freezes, and pops off small chips. In Hoffman Estates, this accelerates after winters with heavy freeze-thaw cycles like 2019 and 2023.
- Visible cracks running edge to center. Hairline cracks wider than 1/16 inch allow water straight through to the flue liner and smoke chamber below. We photograph these during our roof-level inspection and measure them with a crack gauge.
- Water stains on the ceiling near the chimney breast. This means water has already bypassed the crown, run down the flue tile or Olympia liner, and found a path into the framing. It’s often misdiagnosed as a roof leak.
- Deteriorated mortar wash slumping at the crown edges. Many Hoffman Estates builders used a thin mortar wash instead of a proper 4-inch reinforced crown; it cracks within 10-15 years and sheds pieces onto the roof.
- Rust streaks on the exterior masonry below the crown. These indicate the crown has been leaking long enough to corrode the flue liner collar or the Olympia Chimney termination hardware, which can void your liner warranty if moisture reaches the stainless below the cap.
Before
AfterReplacement Cost & What’s Included
| Service Level | Price Range | What’s Done |
|---|---|---|
| Crown sealing (hairline cracks) | $380-$490 | Wire brush prep, flexible crown sealant application, cap reset, photo documentation |
| Partial rebuild (cracked/slumping crown) | $520-$650 | Removal of damaged material, form and pour new crown section, bond to existing concrete, sealant topcoat |
| Full cast-in-place crown | $620-$720 | Complete tear-off, wood form construction, reinforced concrete pour with drip edge, sealant, new cap if needed |
What drives the range: accessibility (steep roof pitch adds time), crown size (multi-flue chimneys common in Hoffman Estates need more material), and whether the existing cap hardware is salvageable. Every price is written before we start, under Haven Standard Clause 1. The work carries our 365-Day Done Right Promise, and the photo record is archived per Clause 4.
DIY or Call Us?

Homeowners can safely check three things from the ground or a sturdy ladder: whether the cap is seated squarely, whether visible cracks have widened since last season, and whether water still drains off the crown surface or pools in the center. Use binoculars. Don’t climb onto a wet or steep roof.
What goes wrong with DIY crown work: most hardware-store sealants aren’t rated for the 150°F+ surface temperatures a chimney crown sees during a heating cycle, and they fail within one season. Worse, sealing over active cracks without addressing the underlying concrete deterioration traps water and accelerates freeze-thaw damage to the flue liner below. We see this in Hoffman Estates every spring. Corrine Halstead and our crews carry Olympia Chimney-compatible materials on every truck, and we document the crown condition with roof-level photos before recommending any work. Camera first, price second, pen third - in that order every time.
FAQs
A properly sealed crown lasts 8-12 years in the northwest suburbs; a cast-in-place replacement with proper drip edges lasts 20-30 years. The freeze-thaw cycle count matters more than age alone. Call (331) 200-4445 for an exact quote - estimates are free.
Yes, if the concrete core is sound and cracks are under 1/8 inch. We seal those with a flexible, breathable crown coat after wire-brush prep. If the crown has slumped, spalled, or separated from the flue tile, replacement is the only repair that lasts. Call (331) 200-4445 for an exact quote - estimates are free.
Most crown sealing jobs take 90 minutes; a full cast-in-place replacement takes 3-4 hours including cure time for the surface sealant. We schedule a morning or afternoon block and text when the technician is en route. Call (331) 200-4445 for an exact quote - estimates are free.
We stock crown sealants, forming lumber, reinforcement mesh, and compatible caps on every truck. Olympia Chimney-specific termination hardware is ordered to match your liner model if replacement is needed, usually arriving within two business days through our Haven buying network. Call (331) 200-4445 for an exact quote - estimates are free.
Level Two Chimney Hoffman Estates is an independent service provider, not affiliated with Olympia Chimney. We also stock parts for DuraFlex, HeatShield, and Gelco systems.
Ready to stop the leak? Call (331) 200-4445. A live person answers 24/7, and we’ll send a written price before any work starts - Haven Standard Clause 1, no exceptions. Bring us a competitor’s written estimate and we’ll give you a free second opinion.
Written by Corrine Halstead, Owner, Level Two Chimney Hoffman Estates at Level Two Chimney Hoffman Estates, serving Hoffman Estates and nearby areas.





Before
After
Before
After
Before
After