Baltimore is a city of history, and our chimneys
reflect that. Many local rowhomes and historic estates still feature original clay tile
liners—or in some cases, no liner at all. While the brick shell of your chimney may
last a century, the inner flue system is often the first thing to fail. Here's what you need
to know about modern relining solutions in Maryland.
The Fragility of Clay Tile Liners
Historically, chimneys were lined with terracotta clay tiles. While effective when
new, clay tiles are brittle. They crack under the thermal shock of a chimney fire
and can spall (flake away) due to moisture and acidic condensation
from modern heating appliances.
Once a clay tile is cracked, it can no longer safely contain the
dangerous byproducts of combustion—including carbon monoxide and embers. The
damage often happens silently, invisible until a video inspection reveals the truth.
🚨 Signs your clay liner may be failing:
- • White chalky tiles or fragments in the firebox
- • Smoke smell in rooms adjacent to the chimney
- • Poor draft or smoke backing up into the room
- • Past chimney fire (even a small one)
The Stainless Steel Revolution
Today, the most popular and effective relining solution is stainless
steel. We use high-grade 316Ti alloy, which contains
titanium and is specifically engineered to withstand the corrosive environment of a
chimney flue—handling temperatures up to 2,100°F.
These liners are flexible, allowing us to navigate the bends and offsets
common in Baltimore's older homes without tearing down masonry. Every liner we
install comes with a factory lifetime warranty on materials.
316Ti Stainless
For wood, oil &
coal. Maximum heat and acid resistance.
AL-29-4C Alloy
Designed for
high-efficiency gas furnaces and condensing appliances.
Why Professional Sizing Matters
It's not enough to just “drop a pipe” down a
chimney. The liner must be precisely sized to the appliance it's venting.
-
▲
Oversized liner → gases cool too fast → heavy
creosote buildup
-
▼
Undersized liner → choked draft → CO backup
into your home
-
✓
Perfect fit → optimal draft → safe, efficient
combustion
We use
advanced draft calculations to ensure the perfect liner diameter for every appliance
we service.
🏛
The Ceramic Alternative for Historic
Restorations
For historic restorations where maintaining the original masonry feel is essential,
we also offer cast-in-place ceramic liners. These systems reinforce
the structural integrity of the chimney while providing a smooth, durable, and
highly insulated flue—virtually indistinguishable from the original
construction.
Cast-in-place
liners are ideal for chimneys with unusual cross-sections, multiple bends, or
landmark status that restricts exterior modifications.
Protect Your Home's Foundation
Is your historic chimney
safe to use? Our Level II video inspections can determine the exact condition of your
liner in minutes. Every liner we install includes a lifetime material warranty.
