Wood burning stove liner

[Number6]

I've had a gas fire removed and am thinking about putting in a wood burner..

The gas fire had a liner fitted which looks in good nick and not very dirty. I know these liners aren't tough enough to handle the heat from a stove. However, I measured it to be 7" wide, the stove should have a 5" wide liner- is there any reason not to put the new liner inside the old one (say about 5 metres up)? Surely the heat would dissipate enough by this height not to damage the old liner?

House is a 30's det. bungalow with an internal fireplace

thanks!

 

[big-all]

you need a class one liner full height its to do with the tars/resins in the wood as far as i know

also the draw wouldn't be the same after the top as the opening is bigger possibly dropping tars and gasses down the gap with the connected safety issues

 

[Karis]

No, you need a full height class 1 liner of a diameter specified by the stove manufacturer or it won’t operate efficiently & installed as you suggest would be dangerious. The flue liner should also be insulated to help maintain temperatures in the top of the flue & provide enough draw for stove efficiency, reduce tarring & corrosive gasses condensing in the top part of the liner.

You should also be aware that installing a wood burner/stove is controlled building work unless you use a HETAS registered installer. You can DIY but need to understand the associated Building Regs, submit a Building Notice, have the installation inspected & witness tested to get a certificate of compliance from Building Control.

Having no certificate will give problems when you come to sell & may invalidate your house insurance in the event of an associated claim.