Cracks in the bricks/vermiculite plates in your Morsø stove may happen due to bumps from the wood. There is no need to replace the bricks even though they are cracked. They do still insulate the fire chamber.
Bricks in Morsø stoves can crack after 4 weeks or 4 years and there’s no way of telling how quickly it can happen, so there is little point in replacing them purely for aesthetic reasons.
The purpose of the bricks is to insulate the fire chamber to increase the combustion temperature. However, if they start crumbling and chunks fall off, the insulation will cease to be effective. This may damage the cast iron and they do in this case have to be replaced.
There are several types of bricks available for different stoves and so we will have to order in the specific one for your stove which may take a couple of weeks to arrive. Please email us with your model details to request your replacement bricks
Find answers to other common queries on the Morsø FAQ page