Milkshaken
Hello...

According to the chimney sweep, I must build the flue connection to be fireproof.
Condition: The flue connection is approximately 150mm from the wooden floor joists, and the heat generated in the ceiling must not exceed 85 degrees Celsius.

I was thinking of the following approach: Insulation around the pipe and building a small box from a material like MINERIT or equivalent.

Needed is approximately 1 square meter. The thing is that Minerit is only sold in whole sheets. 2.8 square meters. and I am not very keen on buying a whole sheet since the price per square meter is a full 245.-/square meter.

What I'm wondering is if there is any similar fire-rated sheet material that I can use to build with, or is it only Minerit that will work?

Where can it be obtained? and in what price range?
 
Now, I know almost nothing about this, but shouldn't it work with a layer, for example, 75mm of mineral wool outside the stosisoleringen and then 2 layers of regular gypsum?
 
Milkshaken
Hello..
I am going to build it on top of the stove. Then it doesn't really work with gypsum since the paper on the gypsum will likely catch fire...
 
There is a gypsum board that I believe is called ProtectF or something similar.
If I remember correctly, it does not have a paper surface.
And it is a bit thicker than regular gypsum.
Made specifically for fire protection.

Best regards, Putte
 
ByggPutte said:
There is a gypsum board that
I think is called ProtectF or something similar.
It doesn't have a paper surface if I remember correctly.
And it's a bit thicker than regular gypsum.
Made especially for fire protection.

Best regards, Putte
ProtectF is a traditional gypsum board that is 15 mm and fiberglass-reinforced. The one you're thinking of is promatec.
 
Have they made a mistake on Gyproc's website? ;)

"Gyproc GF 15 PROTECT® F
Fire protection board
Thickness: 15.4 mm
Width: 1200 mm"

"Gyproc GFE 15 PROTECT® F Ergo
900 fire protection board
Thickness: 15.4 mm
Width: 900 mm"

What I was wrong about is that it has paper. 8-)
That's a lot of boards.

Best regards, Putte
 
No, Gyproc is right :-)

What I meant by traditional gypsum board is that it has those formats and appearance. But with the difference that 1 protect F provides the same fire protection as 2 regular 13mm gypsum boards..
It is often used to enclose steel constructions or in shaft walls where EI60 must be achieved. Promatec is even better in terms of fire, if I remember correctly, but it's not something people want to use if they have a choice of materials.
 
Milkshaken
Thanks for the answers, I'm considering posting a picture of how it looks. I'm not going to place the boards directly on the stove; instead, they will be anchored with angle irons directly into the chimney. I then planned to have the front hatch with a wing nut, just for appearance and convenience, as the cleaning hatch is on the front of the connection piece, making it easier for the chimney sweeper to open, and it might actually look nice with sturdy shiny wing nuts... or should I perhaps choose dome nuts..? :)

Does the forum have a place where I can upload the picture, or should I use something like Imagehack?
 
Isn't it just to attach the image in the message?
I didn't have any program when I uploaded my images.

Best regards, Putte
 
Mr. Z, I think I have used
promatecen at some point at work.
I don't think it has any paper surface at all.

Best regards, Putte
 
You can attach an image in the post. Just click on browse and select the image. However, it won't be visible if you use preview; you must post directly.
 
Milkshaken
I think I succeeded with the picture..:)

Here you see the top part of the stove, I have added a stosisolering to be able to use it while I am searching for a fireproof board.:)

The idea is to build a cassette that anchors to the chimney. with the front side being openable.
 
  • Top of a fireplace with added thermal insulation, intended for building an openable cassette anchored to the chimney wall.
ByggPutte said:
mr Z I believe I have used
promatecen at some point in my work.
I don't think it has any paper surface at all.

Best regards, Putte
It is a cast gypsum and has more bound water. There may also be cement in it. I haven't read the construction product declaration. Since it was a while ago that we used promatec in a project. I recall there is fiberglass reinforcement in them too if I'm not mistaken. I seem to remember there is also a sort of film on one of the sides..
 
Milkshaken
Doesn't sound so fun then with promatec...
 
Milkshaken said:
Doesn't sound so fun then with promatec...
The guys don't like it.... Promatec and minerit are not popular on the construction site when they arrive.... Nobody wants to be associated with them... And I understand them...
 
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