HeatShield Flue Liner Replacement Nationwide

HeatShield Flue Liner Replacement: The Fort Lauderdale Owner’s Guide

We stock and install HeatShield-compatible flue liner replacement parts across Fort Lauderdale, with most installed jobs landing between $1,400 and $3,200 depending on liner length and access. We carry the common diameters on the truck, so if your existing liner measures 6″, 7″, or 8″ and the flue is a straight run up a single-story roof, we can usually complete the swap same day. Most Fort Lauderdale homeowners find out theirs has failed during a routine sweep or inspection, not because the house filled with smoke. That’s the thing about flue liners: they fail quietly, from the inside out, and you don’t know until someone actually looks.

Call (754) 354-1430

Here’s the symptom picture we see over and over in this area. The liner develops hairline cracks or the joints separate because South Florida humidity and salt air accelerate corrosion on stainless, especially in homes within a few miles of the Intracoastal or A1A. You might notice a faint soot smell in the room with the fireplace, or a fine black dust settling on the mantel a few days after a fire. Sometimes the damper gets harder to open and close because creosote is now condensing behind the liner instead of staying sealed inside it. None of these symptoms mean the house is about to catch fire. They mean the inner liner that channels smoke safely out has stopped doing its job, and it’s time to replace it before the next burn season.

Which HeatShield Models This Applies To

HeatShield is a ceramic refractory coating system, not a rigid metal liner. If your flue was treated with HeatShield, the “liner” is actually a spray-on or troweled cementitious layer bonded to the inside of the existing clay tile or masonry chimney. The product line breaks down by application: HeatShield Original (direct bond to clay tile), HeatShield Joint Repair System (seals gaps between tiles), and HeatShield CeCure (ceramic-impregnated fabric for chimneys with missing or badly damaged tile). When we replace HeatShield work in Fort Lauderdale homes, we’re almost always dealing with the Original or CeCure systems on masonry fireplaces, built anywhere from the 1950s through the 1990s.

The identification part matters. The only way to know which HeatShield product you have is to look for the label left by the original installer (often a metal tag near the cleanout door or in the firebox) or to get a camera inspection of the flue interior. We can tell within a few minutes which system was used by what the camera shows: a smooth gray coating uniform in appearance typically indicates Original; a fabric with a visible mesh pattern indicates CeCure. Here’s the compatibility gotcha nobody mentions: you cannot simply re-coat a failed HeatShield layer with another layer of the same product. The original coating must be mechanically removed or the underlying tile addressed first, because HeatShield bonds to what’s beneath it. If the tile behind it is crumbling, a recoat fails within a year or two. That’s why, in Fort Lauderdale’s humid, salt-heavy air, we often recommend replacing the failed system with a DuraFlex or Gelco stainless flue liner instead. Stainless doesn’t absorb moisture the way the ceramic coating system does, and it doesn’t spall off in chunks when the salt air gets to it.

Flint Chimney Sweep is an independent chimney service company. We are not affiliated with the HeatShield brand or its manufacturer, but we work with HeatShield products and replace failed systems regularly throughout Broward County.

Signs Your HeatShield Flue Liner Replacement Is Failing

• Flaking or spalling inside the flue. HeatShield is a ceramic coating. When it fails, it doesn’t usually crack like metal; it chips off in small flakes or larger sheets. During a sweep, you’ll see gray or off-white particles mixed with the soot. This means the bond between the coating and the underlying tile has broken down, often from moisture intrusion.
• Soot smell in the house days after a fire. A failed liner lets smoke and combustion byproducts move through the brick or tile instead of being channeled up and out. That smell settles into the masonry and pushes back into the living space slowly, which is why it shows up two or three days later, not during the fire.
• White staining on the exterior brick crown. Moisture plus creosote inside a chimney can leach through to the outside face of the chimney structure. If you see white efflorescence blooming on the brick above the roofline, that’s a sign the flue interior is saturated and the HeatShield layer may have failed.
• Visible gaps or hairline separations in the coating during a camera inspection. The HeatShield Joint Repair System specifically seals the seams between clay tiles. When those seams reopen, you’ll see thin dark lines running horizontally around the flue at regular intervals, matching the original tile joints.
• Chunks of liner material found in the cleanout or on the smoke shelf. This is the most direct tell. If you find gray ceramic-like fragments in the ash pit or sitting on the smoke shelf during a cleaning, the liner has already partially collapsed. At that point it’s not a maintenance question; it’s a replacement job.

Replacement Cost & What’s Included

In Fort Lauderdale, replacing a failed HeatShield system with a stainless flue liner typically runs between $1,400 and $3,200 installed, parts and labor included. That range covers most single-story masonry fireplaces with a straight flue run of 15 to 30 feet. The variables that push the number up: two-story flue runs, offset flues with bends, large-diameter chimneys that need an 8″ liner, or chimneys that need significant tile removal before the new liner can go in. We give you a written price before any work starts, always. The number on the invoice is the number you approved, no surprises when the truck pulls away.

Every replacement we do includes a camera inspection before and after the install, full documentation with photos, the liner itself in the correct diameter, the connection hardware, and a written guarantee valid for one full year. If a covered repair fails within that year, we return at no charge. That’s the Garrison Standard, the same code every Garrison Partners location operates under, and it applies to every job we book. We also haul off the debris from the failed coating removal. You shouldn’t have to sweep up ceramic dust out of your own firebox.

DIY or Call Us?

There’s an honest split here. What you can safely check yourself: look inside the firebox with a flashlight and note any gray flaking material, check the mantel for fine black dust buildup, and eyeball the exterior chimney brick for white staining or crumbling mortar. Those observations help us give you a better starting point on the phone. What you should not attempt is removing the failed HeatShield coating, measuring the flue from the roof, or installing a liner on your own. This is confined-space work at height, involves corrosive demolition debris from the old coating, and the liner has to be sized, dropped, and secured so it vents properly. A loose or undersized liner does worse than nothing, it creates a false sense that the chimney is safe while still leaking into the home. Hank Delano and his crew have been doing this work across South Florida since he came up through Los Angeles Trade-Technical College and settled here. This is what we do every week.

Call (754) 354-1430. Tell us what you’re seeing, and we’ll schedule an inspection. Every call is answered by a live person, not a voicemail tree. And as Hank says: “Tell them what you found, tell them what it costs, then do the work clean.”

FAQs