Gelco Chimney Cap Installation Nationwide

Gelco Chimney Cap Installation: The Hoffman Estates Owner’s Guide

We stock and install Gelco-compatible chimney caps across Hoffman Estates, typically running $340-$620 installed depending on flue size and whether your crown needs resealing. Most replacements are completed in a single visit, and we carry the common Gelco sizes on our trucks. Homeowners usually discover the cap has failed after finding rust stains on the brickwork below, hearing water drip in the flue during a hard rain, or noticing birds or squirrels have found their way into the chimney.

Call (331) 200-4445

Which Gelco Models This Applies To

Gelco caps break down into three main series you’ll see around Hoffman Estates: the single-flue galvanized line (SC series), the multi-flue stainless covers (MC series), and the chase covers for prefab chimneys (CC series). The SC caps mount with four corner screws to the flue tile rim; MC models use a skirt that overlaps the crown and tension straps underneath. Check the underside of your existing cap for a stamped Gelco part number, usually starting with SC-, MC-, or CC- followed by the flue dimension in inches. If the stamp is rusted over, measure the flue opening width and depth to the quarter inch.

We source Gelco caps through Haven’s buying network alongside DuraFlex and HeatShield materials. OEM Gelco caps carry a 20-year warranty on stainless models, though we’ve found their galvanized units in Hoffman Estates tend to show surface rust inside of eight years due to the freeze-thaw cycling off the Fox River watershed. For most of our customers, we match the Gelco spec with a stainless equivalent from the same supply chain; the fit is identical, the warranty is comparable, and the price stays honest because we’re not paying a brand markup twice.

Signs Your Gelco Chimney Cap Is Failing

• Rust streaks running down the chimney brick. Gelco galvanized caps develop pinhole corrosion at the corners first. Once water gets through, it carries iron oxide down the flue and stains the masonry below. In Hoffman Estates, we see this accelerate after winters with heavy road salt in the air.
• Water dripping or dampness in the firebox after rain. The cap mesh or lid has separated from the frame, or the corner seams have opened. A properly seated Gelco cap should shed water entirely; any intrusion means the seal is compromised.
• Animal sounds or nesting debris in the flue. Squirrels can pry up a loose Gelco single-flue cap in one afternoon. If you’re hearing scratching above the damper, the cap is either missing, bent, or no longer secured at the corners.
• The cap is visibly tilted or has shifted on the flue. Wind gusts off the open prairie west of Hoffman Estates can torque a poorly seated cap. Once it tilts, water runs toward the flue instead of away from it.
• Mesh sides are clogged with creosote or have corroded through. Gelco caps use 5/8-inch spark arrestor mesh. When the mesh fills with glazed creosote or rusts out, the cap still looks intact from the ground but no longer vents properly or stops embers.

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Replacement Cost & What’s Included

The range depends on three things: whether your flue is standard 8×8 or 8×13, whether the existing cap left rust welded to the flue rim, and whether the crown underneath has cracked from years of water intrusion. We don’t quote until we’ve seen it. Clause 1 of the Haven Standard requires a written price, written scope, and written warranty before anyone starts - not after the tech is on your roof.

Every Gelco cap installation includes a post-work camera scan down the flue, photos of the mounted cap and sealed crown, and a 365-Day Done Right Promise. If water gets past our installation, we come back and make it right.

DIY or Call Us?

There’s one thing a homeowner can safely check: whether the cap is still physically present and sitting level. Use binoculars from the ground. Don’t climb the roof.

Everything else belongs to a technician with fall protection and chimney-specific training. Removing a rust-welded Gelco cap often requires cutting or drilling; the flue tile beneath is fragile, and one wrong move cracks the liner. Reinstallation demands proper tension on the corner straps, correct mesh clearance from the flue wall, and a sealant bead on the crown that won’t fail at fifteen degrees in January. We’ve replaced three caps this year in Hoffman Estates where the owner got the old one off, couldn’t seat the new one square, and left a gap that funneled water straight into the smoke chamber for two months before they called us. Camera first, price second, pen third - in that order every time.

Level Two Chimney Hoffman Estates is an independent service provider; we are not affiliated with Gelco Manufacturing. We install Gelco-compatible caps sourced through Haven’s buying network. Call (331) 200-4445 for a free estimate.

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