The liner is the part of the chimney that actually does the dangerous job, carrying heat, smoke, and combustion gases up and out while keeping them away from the masonry and the wood framing pressed against it. On the old flues all over West Philadelphia the original clay tile liner has often cracked, shifted, or eroded past the point of safety, or it was sized for a coal stove and never matched to the gas furnace venting through it now. Draft Crew Phila Chimney relines chimneys across West Philadelphia with stainless steel or cast-in-place systems, sized to your specific appliance, installed and insulated to the NFPA 211 standard, with the draft verified before we leave.
- Sized to the actual appliance you are venting
- Stainless steel or cast-in-place systems
- Installed and insulated to NFPA 211
- Replaces cracked, eroded, or wrong-sized clay tile
- Makes an old or converted flue safe to use again
- Draft confirmed before the job is closed out
How an old West Philly liner fails, and why it matters
The clay tile liner inside an old Philadelphia chimney was built to contain the heat and the corrosive gases of a fire so they never touch the brick or the framing behind it. Over many decades that tile takes a beating it was never going to win forever. A chimney fire can crack it in seconds. The acidic exhaust from coal, oil, and gas slowly eats the mortar joints between the tiles and the faces of the tiles themselves. And the building's own settling, plus a century of freeze-thaw movement in the stack, shifts and separates the sections. The result is a liner with gaps, and gaps are where heat and gas escape into places they were never meant to reach.
That matters because a failed liner is not a cosmetic problem, it is a safety one. A crack lets flue gases, including carbon monoxide, leak into the wall cavities and the living space instead of going up and out. A gap lets enough heat reach the surrounding wood to start a slow, hidden ignition. And a deteriorated liner draws poorly, which pushes smoke back into the room and lays down creosote faster. When an inspection finds a liner in this condition, relining is not an upsell, it is the repair that makes the chimney safe to use at all, and we will show you on camera exactly why.
Matching the liner to the appliance and the flue
A reline done right starts with sizing, because a liner that is too large or too small for what it vents causes its own problems. A flue oversized for a modern high-efficiency furnace lets the exhaust cool and condense, which corrodes everything and ruins the draft, while an undersized flue cannot carry the volume a wood stove or a large fireplace produces. We size the liner to the actual appliance you are venting, whether that is a furnace, a gas insert, a wood stove, or an open fireplace, so the draft is right and the system is safe. On the many West Philly chimneys that were converted from coal or oil to gas without ever resizing the flue, this step alone fixes problems the homeowner has lived with for years.
For the liner itself we use stainless steel, which suits most relines and stands up to the heat and the flue gases for the long term, or a cast-in-place system where the masonry needs the structural reinforcement a poured liner provides. Either way the liner is insulated and sealed so it performs the way the standard requires, and the work is done to NFPA 211. The old, failed tile stays where it is or is cleared as the situation calls for, and the new liner gives you a continuous, gap-free path for the exhaust from the appliance to the cap.
A safe, free-drawing flue confirmed before we leave
Relining a chimney is the kind of work where the proof is in the performance, so we do not consider the job finished until the system is doing what it should. Once the new liner is in, sized, insulated, and connected, we verify the draft, confirm the appliance vents cleanly, and make sure the whole assembly from the connection up through the new cap is sealed and sound. You are not left taking our word that the flue is safe again, you see the finished work and the result for yourself.
A reline is a real investment, and it should buy you a flue you can stop worrying about for a long time. That is why we size it correctly, install it to the standard, and document the whole job with photos rather than cutting the corners a cheaper bid hides. On an old West Philly chimney, a properly relined flue is often the difference between a fireplace or furnace you can use with confidence and one an honest inspection would tell you to stop using. We give you the first kind, and we back the work in writing.
The chimney this service belongs to
A chimney is a system, so chimney liner replacement rarely stands alone, it connects to chimney sweep, chimney camera scan, chimney patching, chimney caps, brick repair, and our crew handles all of it under one roof. We bring the same service to West Philadelphia chimney liner replacement, Chimney Liner Replacement in University City, Overbrook chimney liner replacement, Wynnefield chimney liner replacement and everywhere else across the Philadelphia area.
If you searched for chimney sweep near me, you have reached a local crew, call 215-645-7658 any time. For background, read Reading the Case for Tuckpointing in Philadelphia on our blog, or head back to our Philadelphia home page to see everything we do.