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 Cap & Crown in Evanston: What to Know First
We provide independent HeatShield chimney cap and crown service across Evanston, from the historic lakefront district to the newer construction west of Ridge Avenue. Most HeatShield cap and crown jobs are diagnosed, quoted in writing, and completed within one to two visits - no deposit required before you see the scope and the price. We’re not affiliated with HeatShield Corporation; we’re an independent service provider who stocks the parts and knows the failure patterns.
This page is for Evanston homeowners who already have a HeatShield product installed and need cap or crown work done right. If you’re seeing rust streaks, crown cracks, or a cap that’s lost its mesh tension, call us at (708) 234-1174. We’ll send a named, background-checked technician with a camera, and you’ll get a written price before anyone picks up a tool.
How HeatShield Products Fail - and How We Fix Them
- HeatShield Pro-Series multi-flue caps in Evanston’s freeze-thaw zone. The Pro-Series uses a 24-gauge lid with welded corner seams. In Evanston, where lake-effect temperature swings hit 40 degrees inside 12 hours through February and March, those seams fatigue at the weld points. We see this on homes near Lighthouse Beach and the lakefront historic district more than inland. Our fix: seam-seal with high-temp silicone where intact, or source a replacement lid through our Haven buying network - we don’t weld-patch caps that have already cycled through two Evanston winters.
- HeatShield UL-Listed single-flue caps with failed mesh. The 5/8-inch spark arrestor mesh on single-flue units loses tension after 6-8 years of thermal cycling. Once the mesh sags, it catches debris and restricts draft. We replace with OEM-spec mesh or, if the frame is still square, fit a Gelco aftermarket insert that matches the flue dimension exactly. Corrine Halstead keeps a sizing chart from jobs she’s refused to clear - the camera doesn’t negotiate, and neither does creosote - and we use that same rigor matching replacement mesh to flue opening.
- HeatShield CrownSeal coating delamination on poured concrete crowns. CrownSeal is a brushable elastomeric product, not a cap. When applied over a crown with active spalling or without proper surface prep, it traps moisture and accelerates freeze-thaw damage. We see this on 1920s Evanston masonry where the original crown was poured with too little Portland cement. Our fix: remove the failed CrownSeal, grind to sound concrete, re-pour or patch with CrownCoat or a proprietary cementitious overlay, then cap with a vented unit that lets the crown breathe.
- HeatShield chimney crown cracks at the flue interface. The crown should overhang the flue tile by minimum 2 inches with a drip edge. HeatShield crowns installed with insufficient overhang direct water straight to the brick-masonry joint. In Evanston’s older homes near Central Street, we’ve found original crowns poured directly against clay flue liners with no expansion gap. Thermal expansion cracks the crown at the liner. We cut a relief joint, install a flue-top gasket, and re-pour with proper slope and overhang.
- HeatShield factory-built chase covers on prefab chimneys. These are galvanized or powder-coated steel tops, not true masonry crowns. The corner seams and center rib are leak points after 10-12 years. In Evanston’s tree-canopy neighborhoods like the one around Northwestern’s south campus, falling branch impacts dent the center rib and create pooling. We measure on-site and fabricate a replacement from 24-gauge stainless or copper through our Copperfield supply line, with cross-breaks to shed water and a screened ridge vent.
Our HeatShield Chimney Cap & Crown Process

- 1
Call and schedule. A live person answers. We book a window, assign a named technician, and text when they’re en route - Haven Standard Clause 2, Arrive on schedule.
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NFPA 211 Level 2 inspection with camera. We run a camera down the flue and photograph the crown, cap, and flue top from the roof. You see what we see. Clause 4 of the Haven Standard requires this documented photo record on every job; we’ve done it since 2009.
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Written scope and price. Before any work starts, you get a written price, written scope, and written warranty - Clause 1, Have it in writing. No exceptions. If you have a competitor’s written estimate, we’ll give you a free second opinion.
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Parts decision: OEM HeatShield or quality aftermarket. We stock common HeatShield caps and crown repair materials. If your model is discontinued or lead-time exceeds your comfort, we source equivalent from DuraFlex, Gelco, or Olympia Chimney through our Haven buying network, with full disclosure of warranty implications.
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Repair and test. Cap or crown work is completed, flue is camera-checked for obstruction, draft is verified with a smoke pencil or manometer reading. Photos of completed work go to your record.
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Cleanup and documentation. Written warranty and photo record delivered. The 365-Day Done Right Promise applies - if it’s not done right, we make it right.
Before
AfterWhat HeatShield Chimney Cap & Crown Costs in Evanston
| Service | Typical Range | What Moves the Price |
|---|---|---|
| HeatShield single-flue cap replacement | $340-$580 | Flue size, mesh gauge, stainless vs. galvanized |
| HeatShield multi-flue cap replacement | $620-$1,100 | Lid span, number of flues, custom fabrication |
| Crown repair with CrownCoat | $480-$780 | Crown square footage, crack depth, prep required |
| Full crown rebuild (poured concrete) | $1,400-$2,400 | Crown dimensions, scaffolding needs, flue count |
| Chase cover replacement (prefab) | $680-$1,200 | Material (galvanized/stainless/copper), rib configuration |
These are Evanston-specific ranges based on our 2024-2025 jobs, including materials sourced through our Haven buying network. Every estimate is free, in writing, and valid for 30 days. Call (708) 234-1174 to schedule.
Why Evanston Homeowners Call Level Two Chimney Evanston for HeatShield Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009. Every one had a written price before work started and a documented record when finished. Our technicians are background-checked, uniformed, and named before they arrive - not dispatched from a pool.
Corrine Halstead learned this trade at Apex Technical School in Manhattan and has been running inspections across Evanston for several years now, including the older masonry stacks near the lakefront historic district. She and her crew know HeatShield’s product lines because they’ve diagnosed the failures in person, camera-down, winter after winter. When a HeatShield part is back-ordered or discontinued, we pivot to DuraFlex or Gelco equivalents with full transparency - no bait-and-switch, no mystery sourcing.
The 365-Day Done Right Promise is stamped on every job. The photo record is included, not upsold. And a live person answers the phone, 24 hours a day.
FAQs
Using an independent service provider like Level Two Chimney Evanston does not automatically void a HeatShield product warranty, but warranty coverage for the cap or crown itself requires OEM parts and proper installation per manufacturer spec. We source OEM HeatShield components when available and document the part number and install method in your photo record. If we recommend an aftermarket equivalent from Gelco or DuraFlex, we’ll explain exactly what warranty coverage you’re keeping or losing before you approve the work. Call (708) 234-1174 and we’ll review your specific model.
Most single-flue cap replacements are completed in 90 minutes to two hours, including inspection, setup, and cleanup. Multi-flue caps or jobs requiring crown repair underneath add two to four hours. We don’t rush the camera verification at the end. You’ll get a written completion time on your invoice.
Yes, in most cases. We maintain dimensional records from prior jobs and can fabricate or source equivalent from Olympia Chimney or Famco through our Haven buying network. If the original mounting method was proprietary, we adapt to a standard flue-top or crown-mount system and disclose the change in writing. Some Evanston homes near the lakefront have custom cap configurations from 1990s HeatShield production runs - we’ve matched three of those in the past two years.
We determine this with a hammer test and camera survey. If the crown surface is sound more than 3/4 inch deep and cracks are hairline, CrownCoat or a cementitious overlay is sufficient. If we find hollow-sounding concrete, exposed rebar, or cracks that penetrate to the flue interface, we recommend full removal and re-pour. You’ll see the camera footage and the hammer-test results before we write the price - nothing is recommended without evidence you can see for yourself.
Water enters the flue system, accelerates liner deterioration, and can damage the smoke chamber and firebox. In Evanston’s climate, freeze-thaw cycles widen cracks exponentially through winter. Carbon monoxide risk increases if the flue is obstructed by debris or if liner gaps develop. The repair cost typically doubles within two to three years of deferred maintenance. We don’t scare-sell - we’ll show you the camera footage, explain the timeline, and note when work can safely wait versus when it can’t. Call (708) 234-1174 for a free estimate.
Written by Corrine Halstead, Owner, Level Two Chimney Evanston at Level Two Chimney Evanston, serving Evanston and nearby areas.





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