Gelco Chimney Cap Installation Nationwide

Gelco Chimney Cap Installation: The Sherman Oaks Owner’s Guide

A Gelco chimney cap installed in Sherman Oaks typically runs $340-$680 depending on flue size, cap style, and whether the existing flue tile needs modification before mounting. We stock Gelco caps in common sizes for the 14×14 and 13×13 flue tiles found on most Sherman Oaks homes built between 1945 and 1985, and we carry the full Gelco sizing chart for custom orders through our Haven buying network. Most installations are completed in under two hours with a written price agreed before we start.

Call (424) 414-6048

Homeowners usually find out their cap is failing during the first rain of fall, when water hits the firebox floor, or when a neighbor spots rust streaks running down the chimney face from Ventura Boulevard. Sometimes it’s a squirrel scrambling out of a corner the mesh has corroded through. The camera doesn’t lie, and neither does the written quote.

Which Gelco Models This Applies To

Gelco caps break down into three series that matter for Sherman Oaks homes: the standard single-flue caps (model prefix SC-), multi-flue covers (MC-), and the premium stainless line with welded seams rather than folded corners. Most calls we get are for the SC series on single-story ranch homes or the MC- series where a chimney has two flues serving a fireplace and a furnace.

To identify yours, look for the stamped model number on the underside of the cap lip, visible from the roof edge with binoculars. If the tag’s gone, measure the flue tile’s outside dimensions, not the crown. A 13×13 flue tile takes an SC-1313; a 14×14 takes an SC-1414. The gotcha is the 8×13 “California flue” found on some 1960s tract homes in the hills south of Ventura Boulevard, which needs an SC-813 and won’t seat properly on a standard 13×13 cap. We verify this with a photo before ordering.

We source Gelco caps through our Haven buying network alongside DuraFlex and HeatShield materials. For most Sherman Oaks installations, the OEM Gelco cap is the right choice; the aftermarket equivalents we see don’t carry the same gauge stainless or the lifetime warranty on the mesh. We keep SC-1313 and SC-1414 in stock on the truck. Custom sizes or the MC series typically arrive in three business days.

Signs Your Gelco Chimney Cap Is Failing

• Water in the firebox after rain. The cap’s crown seal has separated, or the mesh has sagged enough to create a low point where water ponds and drips through. In Sherman Oaks, where we get those concentrated winter downpours off the Santa Monica Mountains, this shows up fast.
• Rust stains on the chimney face below the cap. The 304 stainless mesh is holding up, but the galvanized steel base has started failing at the corners. Gelco’s all-stainless line avoids this; the standard line doesn’t.
• Mesh holes or sagging that lets animals through. Squirrels chew the 5/8-inch mesh when it’s already weakened by salt air corrosion. We see this on homes west of Sepulveda, closer to the coastal influence.
• Cap sitting crooked or detached on one side. The mounting brackets have corroded through, or the masonry screws pulled out of deteriorating flue tile. This one’s dangerous; a cap tumbling off a two-story chimney in Sherman Oaks wind is a liability.
• Draft problems or smoke backup on startup. The mesh is clogged with creosote buildup, or the cap’s design is too restrictive for the fireplace’s air demand. We check this with a draft gauge during installation.

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Replacement Cost & What’s Included

What drives the range: flue tile condition, roof access difficulty, and whether we need to fabricate a custom mounting solution. Every job gets a written price before work starts, per Haven Standard Clause 1. The cap carries Gelco’s warranty; our installation is backed by the 365-Day Done Right Promise. We document the finished work with photos under Clause 4 of the Haven Standard, same as every job since 2009.

DIY or Call Us?

You can safely check whether your cap is loose from the ground with binoculars, and you can measure your flue tile from inside the firebox with a flashlight and tape measure if you’re comfortable on a ladder. Don’t go on the roof. The combination of Sherman Oaks roof pitches, decades of sun-baked composite shingles, and a two-story drop is how emergency room visits happen.

Installing a chimney cap looks simple until you’re trying to seat a cap square on a flue tile that’s chipped at the corners, or drilling into masonry that crumbles instead of holding a screw. We’ve pulled DIY caps off where the owner used the wrong fasteners, creating holes that now leak water directly into the chimney structure. If you’re not sure about your flue tile condition or your roof comfort level, call (424) 414-6048. We’ll give you a written price before we start, and you’ll get the photo record when we’re done.

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