Write a new post in response to today’s one-word prompt: burn.

Source: Burn | The Daily Post

When they refurbished our woodburner, they took out the damper in the flue and opened up the air vent at the base of the fire box.

The net effect of this was that there was more air coming into the combustion chamber, more than the flue could handle once it was heated, especially a good burn with really dry wood.

So what would happen was that the heated air would go about half way up the flue – it is about 6 metres in length – before it created a vacuum behind it and came rocketing back down the flue. On occasion we would have jets of flame a metre long blasting out the air vent! Not only did we have to put up with a smoky home but the point in the flue where the hot air reversed flow would build up and block with soot…

The solution after trying everything else was to stop the air vent opening by about a quarter inch so that the air coming in was proportionate to that amount that could go up the flue once heated…