What is a flexible liner for?

By GTD Office

What's involved - flexible liner


A liner creates a correctly sized flue for the wood burner which improves draft, stove performance and reduces creosote and soot build-up.

Older chimneys are often too large, which causes:

  • Poor draw
    Smoke spillage
    Difficulty lighting
    Excess soot and tar build-up

A properly sized liner keeps flue gases hotter, helping smoke rise efficiently.


When smoke cools too quickly 
When smoke cools too quickly inside a large masonry chimney, tar and creosote condense on the walls.

A stainless steel flexible liner:
Keeps gases warmer
Reduces condensation
Lowers chimney fire risk
Older brick chimneys can crack or leak:
Smoke / Carbon monoxide / Heat
can escape into walls, lofts, or neighbouring rooms.
The liner creates a sealed passage from stove to chimney pot.

Fitting the liner
After the chamber has been prepared and the hearth laid, it's time to fit the flexible liner from the roof using ladders.
The liner is held in place by a cowl on your chimney pot, and the liner is guided down the chimney and connected to the stove exit pipe.
316/316 stainless steel liner is recommended for wood burners. 316/904 and 904/904 liner for stoves burning coal. We only use flexible liner made in the UK
Once in place a register plate is fitted to stop heat escaping up the chimney.