Chimney Liner Replacement
When the existing liner is cracked beyond repair, collapsed or no longer suited to the appliance, replacing it is the way to make the flue safe again.
Signs the liner needs replacing
- Many cracked or broken clay tiles, or tiles that have shifted or fallen
- Large gaps between tiles or missing mortar through much of the flue
- A metal liner that is rusted, holed or collapsing
- Damage from one or more chimney fires
- Repeated deposits seeping through the masonry
- A liner that is the wrong size for what is connected to it
Why repair is not always enough
Spot repairs and resurfacing work when the damage is limited and the rest of the flue is sound. When the damage is widespread, or the liner cannot be relied on to hold, patching it just delays the same decision. In that case a new liner is the sensible route. See liner repair for the cases where repair is enough.
Options
| Type | Notes |
|---|---|
| Stainless steel, flexible | Common for relining a masonry chimney, and installed from the top. |
| Stainless steel, rigid | Used where a straight run allows it. |
| Insulated | Helps hold the heat in the exhaust and can improve draft. |
| Cast-in-place | A cement-based lining formed inside the flue. |
| New clay tile | Possible in some rebuilds, but rarely a practical replacement for an existing flue. |
The fuel, the appliance and the manufacturer’s instructions decide which is appropriate. We explain the options for your chimney.
What replacement involves
We examine the old liner, decide whether it can stay in place, and install the new one through the flue. The new liner is connected at the bottom to the fireplace or appliance and secured and capped at the top. We check the connections and tell you what we did and what to look out for.
If the cause of the damage was a chimney fire, we recommend knowing why it happened and addressing it, so that the new liner is not damaged the same way.
What the work involves
How replacement goes
- InspectWe assess the old liner and the chimney around it.
- PlanWe recommend a replacement that suits the appliance.
- ReplaceThe new liner is installed and connected.
- FinishThe top is secured and capped.
Questions
Frequently asked questions
Does the old liner have to come out?
Often it does not. A new liner can go inside the old flue. We tell you what applies to yours.
How long does a new liner last?
It depends on the material and use. We explain what to expect for the type we recommend.
Do I need a permit?
Requirements vary by town. Ask your local building department, and tell us if one is required.
Can I replace only part of the liner?
Sometimes a section can be repaired. If the damage is widespread, a full liner is more reliable.
Ready to have your chimney looked at?
Call us, or send a scheduling request. We will contact you to confirm a time. Your appointment is not confirmed until we do.