Tile stove

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In Ossolin, we have a wood fired tile stove (tegeltjeskachel, or whatever the exact name might be in Dutch or English). It doesn't heat the house by itself, and how to do that in the best possible way, seems not so obvious.


  • What model of stoves do we have?
  • How do all the valves work?
  • How do the channels work?
  • How to heat? Indeed 2/day and maybe more when it is really cold?
  • There seem to be leaks around the 'pizza heater' or not?
  • Around 2021.11.18, Jeroen retracted a piece of stone/ceramics from the main stove. Problematic?
  • We have a broken tiled stove in the cellar. What to do with it?
  • Several pipes come from the stove in the cellar. What are they for?
  • What to do with the main valve when burning? Once the fire started, make it as closed as possible, so that heat gets trapped?
  • Can our stove be remade into something more modern? Like with bigger window and maybe place for a microwave?
  • Can our stove be made more beautiful?
  • Can we remove the cooking section and replace it with the actual cooker?


A tile stove is a big thing from stone and stuff. Seems like you can't do much harm to it, as long as you don't burn yourself, right? Well, no. Therefore, let's start with pointing out some dangers & responsibilities.

Too hot

Lo and behold: A stove can get too hot! You're supposed to heat a tile stove only a couple of times per day, for only a limited duration.

  • Normally, this would be once or twice per day, with 1 or 2 loads ('load' = stove filled with wood) and at least a 4-hour break until you fire up the stove again
  • On very cold days, you could increase frequency to 3 or 4 times per day, but do keep the 4-hour breaks between firings
  • At such 'firings', you would typically use only 1 load
  • On very cold days, you could use 2 loads for high thermal capacity stove, and 1.5 loads for a medium thermal capacity stove.

I don't know exactly what happens when a stove gets too hot. Some ideas:

  • 'Thermal stress'
  • Cracks in the tiles or mortar?
  • Breaking thermal blocks inside the stove?
  • Cracks around the iron inlets, doors and other stuff where smoke can escape?

Wet wood & chimney fire

Wood has to be dry. When it isn't dry, this will bring several problems with it. The only problem to discuss in this chapter: A build-up of soot (roet, sadza) inside the stove and the chimney and the increased risk of a chimney fire.

A chimney fire not only poses a direct fire emergency, but it is likely to damage the chimney: The stove is build from heat resistant tiles and clay, but the chimney is usually build from ordindary bricks and mortar A chimney fire can reach a temperature of up to 1,200 degrees Celsius, and this is too much for the bricks and mortar. It probably means that the chimney has to be restorated.

Phonecall Siemiatycze stove man (2021.11.24)

We phoned with the man behind alegrzeje.pl:

  • There is a difference between heating houses in cities and in the country side, as cities have a more stable temperature
  • In Podlasie (the province where we're located), the average interior temperature is about 18-19 degrees Celsius - I was amazed to hear that
  • The isolation of the house plays a major role concerning heating the house. We have double glazing and probably double walls, but the ceiling doesn't seem to be much isolated. The roof on the attic isn't isolated at all