Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
Gas fireplace serviceLevel 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 Repair in Miami: What to Know First
HeatShield chimney repair in Miami usually involves cracks in the flue liner, water entry through the crown, or mortar joints that have loosened from years of salt air and humidity. We repair HeatShield systems as an independent HeatShield service provider, and most jobs are completed within one to three days depending on what we find during inspection. Flint Chimney Co Miami is not affiliated with or authorized by HeatShield, but our techs work on these systems regularly from Coral Gables to Brickell, and every repair carries our written one-year guarantee.
This page is for Miami homeowners who already have a HeatShield liner or firebox installed and need repair work done. If that’s you, call (786) 305-7861 and we’ll get you scheduled for an inspection with a written price before any work starts.
How HeatShield Products Fail – and How We Fix Them
HeatShield makes several liner and firebox repair products, and each has its own weak points in Miami’s climate. Here’s what we see most often:
- HeatShield Cerfractory flue sealant over failed original mortar. We pull plenty of HeatShield liners in Miami homes where the original terra cotta flue wasn’t swept for a decade, the mortar joints opened up, and the HeatShield coating was applied over a surface that was already compromised. The fix is removing the compromised coating, rebuilding the joint structure where needed, and reapplying HeatShield’s Cerfractory sealant to a clean, sound surface. Applying it over crumbling mortar is throwing money away.
- HeatShield Damn Good Chimney Crown coat cracking at the edges. Miami’s sun is brutal on masonry crowns. The HeatShield crown coating does what it’s supposed to, but if the crown underneath wasn’t built with the right overhang, water still wicks in around the edges. We rebuild the crown edge, apply the HeatShield crown sealant, and make sure water sheds away from the flue. The product works when the geometry works.
- HeatShield Joint Repair System failing from previous DIY or low-bid application. This one’s common in older Miami neighborhoods like Shenandoah and Allapattah. Someone skipped surface prep, the HeatShield material didn’t bond, and now the homeowner has a flaky mess inside the flue. We remove the failed material, stage the surface correctly, and reapply with the full cure time the manufacturer specifies. Surface prep is 80 percent of this job.
- HeatShield FireGuard firebox coating spalling after water intrusion from above. Water comes down the flue, puddles in the firebox, and the FireGuard coating starts to lift. The coating itself isn’t the problem. The missing rain cap or cracked crown above it is. We fix the water entry point first, then recoat the firebox. If we don’t fix the water, we’re back in a year doing it again.
- HeatShield liner gaps at the smoke chamber transition. The smoke chamber is the tricky transition zone where the flue narrows before it reaches the liner above. HeatShield’s parge material handles this, but the application has to be built up in layers. We’ve seen one-coat jobs that crack within a year because whoever did it was in a hurry. Ours are done in staged coats with the recommended cure time between each.
Styles & brands we work with
Our HeatShield Chimney Repair Process
- 1
Call and schedule. A live person answers at (786) 305-7861. No voicemail tree. We book the inspection, and you get a written price before work starts.
- 2
Camera inspection. Our tech runs a camera down the flue and through the firebox. You see the footage. We point out exactly where the HeatShield material has failed and why.
- 3
Written repair scope. We put the exact work on paper: what material we’re using, where, and how much it costs. The number on that paper is the number on the invoice.
- 4
Repair using HeatShield materials. We use HeatShield products on HeatShield systems. Where a spec calls for it, we use the right HeatShield Cerfractory or FireGuard line. No generic substitutes unless we tell you in writing why.
- 5
Post-repair test and walkthrough. We check the draft, verify the repair with the camera again, and walk you through what we did. You see the before and after.
- 6
Written guarantee. Every HeatShield repair gets our 365-Day Done Right Promise in writing. If a covered repair fails within a year, we return at no charge. That’s the Garrison Standard, and it’s not negotiable.
See the difference
Before
After
Before
After
Before
AfterWhat HeatShield Chimney Repair Costs in Miami
HeatShield repair pricing in Miami depends on what failed. Here’s the honest range for the jobs we do most:
- HeatShield flue sealant repair (small cracks, minor joint gaps): $900 to $1,800
- HeatShield Joint Repair System (multiple failed mortar joints inside the flue): $1,500 to $3,200
- HeatShield crown coat repair with re-secured crown edge: $800 to $1,400
- HeatShield FireGuard firebox recoating (including necessary water entry fix): $1,200 to $2,800
- Full HeatShield liner restoration in a two-story Miami home: $3,500 to $7,500 depending on flue length and access
What moves the price: how tall the flue is, whether we need scaffolding or roof access, how much surface prep is required, and whether water entry has to be addressed first. Every job gets a written quote before any work starts. Call (786) 305-7861 for a free estimate. We’ll tell you what we found and what it costs.
Why Miami Homeowners Call Flint Chimney Co Miami for HeatShield Work
We’re part of the Garrison Partners family, which has been in the chimney trade since 2002. Hank Delano and the crew have been serving Miami for years, and we’ve seen just about every way a HeatShield system can fail down here. HeatShield work is specific, and it’s not the kind of job you hand to a generalist who’s never touched the product line.
We also carry and install DuraFlex and Gelco, so if the honest answer is that a HeatShield repair doesn’t make sense anymore and a replacement liner is the better call, we’re not trying to talk you into a patch because that’s all we have on the truck. The written price and the one-year guarantee cover every decision we make. Live person answers, 24/7. Background-checked techs in uniform at your door. “Tell me what you saw, I’ll tell you what it costs.”
FAQs
Repairs done by an independent contractor using proper HeatShield materials and following manufacturer application standards typically do not void the HeatShield warranty, but the warranty terms vary by product line and installation date. We’re an independent HeatShield service provider, so we do not handle manufacturer warranty claims, and we’ll tell you honestly if the work you need might be better routed through a warranty channel first. Call (786) 305-7861 and we’ll walk you through what to check before you spend anything.
Most HeatShield repairs we do in the Miami area are completed within one to three days. The variable is cure time, because HeatShield materials have specific cure windows that cannot be rushed without compromising adhesion. We schedule accordingly and never cut corners on cure time. Call (786) 305-7861 for a current schedule.
We use HeatShield Cerfractory, FireGuard, and Joint Repair System materials on HeatShield systems. The only time we’d specify something different is if a specific component is backordered or a structural issue means the existing system isn’t worth repairing, and that decision goes in writing before we proceed. Call (786) 305-7861 with your system details and we’ll confirm what’s available.
Camera inspection tells us. If the HeatShield coating has failed in isolated sections and the underlying masonry is sound, repair makes sense. If the flue structure is compromised or the HeatShield material has failed across large areas, replacement with DuraFlex or a new HeatShield liner may be the smarter money. You’ll see the footage yourself and get a straight recommendation in writing. Call (786) 305-7861 to book the inspection.
We return at no charge. Every HeatShield repair we do carries our 365-Day Done Right Promise, written and valid for a full year from the service date. If a covered repair fails, you call, we come back, we make it right. No argument, no invoice. Call (786) 305-7861 and we’ll schedule the return visit.
Written by Hank Delano, Owner, Flint Chimney Co Miami at Flint Chimney Co Miami, serving Miami and nearby areas.