I am moving and building new walls for a bedroom. In the middle of the house stands the chimney, and three walls made of standing planks connect to the chimney. Two of these are now demolished but will be rebuilt.
I understand that because these were built when old (or rather no) fire regulations applied, it is okay for them to be directly against the chimney. But how should I do it now when I rebuild them? I have read that no flammable material should be exposed to more than 85 degrees. The chimney isn't cold, but it never gets so warm that I would be afraid it reaches 85 degrees on the surface. Additionally, the wall connects to the chimney on such few and small areas that the heat is well ventilated away.
The question is whether I can place flammable materials directly against the chimney as long as the above is met?
Somewhere I've read something about needing 10 cm to flammable material. Is that taken out of the air? I would prefer not to work with gypsum and other cement-based boards when building. Are there ways around this?
Thankful for answers.
I understand that because these were built when old (or rather no) fire regulations applied, it is okay for them to be directly against the chimney. But how should I do it now when I rebuild them? I have read that no flammable material should be exposed to more than 85 degrees. The chimney isn't cold, but it never gets so warm that I would be afraid it reaches 85 degrees on the surface. Additionally, the wall connects to the chimney on such few and small areas that the heat is well ventilated away.
The question is whether I can place flammable materials directly against the chimney as long as the above is met?
Somewhere I've read something about needing 10 cm to flammable material. Is that taken out of the air? I would prefer not to work with gypsum and other cement-based boards when building. Are there ways around this?
Thankful for answers.
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I have done exactly this in our house. I first called the chimney sweep and he said, just like you wrote, that the old walls were no problem, but where I was to build new ones, he said that I should start framing the wall at least 10 cm from the chimney stack and leave air between the chimney stack and the frame. However, you could connect with wood-based sheet material or other cladding against it as long as it was end grain. This also applied to the connection of any ceiling paneling.