What is a Liner or Fire Brick?

Liners, also often referred to as Fire Bricks are used to insulate the fire chamber from the stove body in order to maximise combustion efficiency.  Liners have the appearance of a low grade wood like MDF, but are actually made from Vermiculite.  This is a clay-like mineral that has a very high temperature resistance property.

Each stove model usually has at at least two or three often more liners fitted, but this varies according to the model and output. Liner shapes and sizes will also vary from model to model, and in some cases might have notches or sometimes have decorative patterns impressed into them (often known as 'fluting').

Cracked liners or fire bricks

Stove liners may become cracked after sustained burning at very high running temperatures, or if the liners become damp and are subjected to a high burn rate without a period of slower firing. 

Assuming the liners are still in situ and able to support the throat plate correctly there is no need to replace them in the short term. Cracked liners will not in themselves affect the performance of the stove.

It is not always necessary to replace a liner if it is cracked, as it will still insulate the stove. However, once a liner begins to crumble, its insulation properties are reduced and this may cause irreversable damage to the stove body, so at this point they will need replacing.

Purchasing replacement liners

Replacement liners can be bought directly from your local Arada stove retailer or directly from us online.