Hello,
We are in the process of decorating our attic. Today, the chimney stack runs up through the attic, and we were thinking of building a wall as a divider around it. The current chimney is plastered, so we'd like to extend it with a plastered wall and later paint/limewash it along with the chimney.
What should be used as a base for this?
* Foam, studs and chicken wire (plaster netting)
* Chipboard and net
* Gypsum net
Suggestions on how to make this wall white?
Best regards,
Jonas
We are in the process of decorating our attic. Today, the chimney stack runs up through the attic, and we were thinking of building a wall as a divider around it. The current chimney is plastered, so we'd like to extend it with a plastered wall and later paint/limewash it along with the chimney.
What should be used as a base for this?
* Foam, studs and chicken wire (plaster netting)
* Chipboard and net
* Gypsum net
Suggestions on how to make this wall white?
Best regards,
Jonas
Ok. Stålregel seems good. Even though the chimney is not currently used (geothermal heating), it might be fun to have a fireplace later. However, there are wood shavings against it right now =(
Does plaster adhere to drywall?
/Jonas
Does plaster adhere to drywall?
/Jonas
My chimney sweep's recommendations were to use only materials that can withstand recurring high temperatures for many years/decades when connecting to the chimney. I recall that there should be at least 15-20 cm of non-combustible and long-term heat-resistant material from inside the flue. Gypsum boards are not recommended as they become brittle(?) from heat after a number of years. What was recommended were steel studs, minerit boards, stone wool, stone material, plaster, and fire-resistant mounting foam.
Bear in mind that even if the stone in the chimney is 15-20 cm thick, the mortar in such a thick chimney can actually crack and form cavities from the flue to the outside of the wall, and then it can easily lead to a house fire if a wooden stud is against the chimney.
To avoid this, like with thermal bridges, one should stagger the joints of the non-combustible layers so that the next layer protects if the joint to the other layer fails.
As for wood chips directly against the chimney, it's not a great idea. I would wrap a layer with at least 45mm of mesh-reinforced stone wool around the chimney where the chips are if you're already up and running on the roof sometime.
Bear in mind that even if the stone in the chimney is 15-20 cm thick, the mortar in such a thick chimney can actually crack and form cavities from the flue to the outside of the wall, and then it can easily lead to a house fire if a wooden stud is against the chimney.
To avoid this, like with thermal bridges, one should stagger the joints of the non-combustible layers so that the next layer protects if the joint to the other layer fails.
As for wood chips directly against the chimney, it's not a great idea. I would wrap a layer with at least 45mm of mesh-reinforced stone wool around the chimney where the chips are if you're already up and running on the roof sometime.