Hello,
I am in the process of building a sauna and a so-called "Grillstuga" in the same building. My idea is to build a fireplace with fireproof bricks and a metal hood to redirect the smoke. Around the fireplace, you can sit on benches while also cooking on the fire. I have built the frame itself, and it is located near our summer house, so I would like to complete both the sauna and the "Grillstuga" by next summer.
What should one consider regarding fire safety, the metal hood, or construction-wise when building this? Have I thought correctly?
Grateful for all advice and tips.

The house 3D model of a building frame for a sauna and grill hut, showing dimensions and construction layout for a summer cottage project. 3D sketch of a sauna and grill hut plan with a brick fireplace and metal flue, surrounded by seating benches, showing measurements. 3D drawing of a sauna and grill cabin with a brick fireplace and metal hood, surrounded by benches, showing construction measurements and layout. Wooden framing of a sauna and grill hut under construction, with a ladder leaning against it and firewood stacked beneath.
 
I would have taken a thick pipe, like 200. You won't have a fan in the pipe, so it might be nice to get as much draft in it as possible... if you're grilling pork or something ;)

otherwise, it's the usual, non-combustible material on the floor, etc.

ruska long and ruska short :) (old military slang if you haven't done conscription)
 
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conol
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1977bjorn 1977bjorn said:
I would have taken a thick pipe, like 200. You won't have a fan in the pipe, so it would be nice to get as much draft in it as possible... if you're grilling pork or something ;)

otherwise, it's the usual, non-combustible materials on the floor, etc.

shake long and shake short :) (old military language if you haven't done the military service)
Thanks for the good comment. It's quite likely that there will be some pork :-)
 
tommib
A fireplace inside a house is likely to require a building permit, and you probably won't get one for a completely open fire.

Of course, you can choose to ignore this, but it's good to be aware that you're breaking the rules.
 
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conol
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Thank you for the response. You are probably absolutely right. I have received a building permit for the construction itself where I described the function in words. Since the construction is quite small, no larger documentation is needed as it turned out to be like a shed on the property. There is probably a fancier word for this.
I think of examples like grillstugor that have saunas where fire burns. I have taken inspiration from these and thought it could be combined. See images as examples. Inside view of a small wooden cabin with a central fire pit, wooden benches, and a window overlooking a scenic landscape. A fire burns in a hexagonal wooden grill hut with a chimney, inspired by sauna cabins, viewed from inside with a window in the background.
 
tommib
Aha, you have a building permit for two fireplaces? Then go ahead. I expected protests about that, but maybe it isn't classified as a heating fireplace?

Practically speaking, I would make sure to arrange an air intake through the floor so you don't have to draw room air. In addition, you can make the fireplace like a pot, which improves fire safety. Also, consider how you will start up, i.e., how you will warm up the chimney. It's smart to have a hood to collect the smoke gases.

On your drawing, it also looks quite cramped. I think it might be difficult to sit so close to the fire for an extended period.
 
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conol
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Thank you for your good comments.
It's true that one sits too close to the fire - probably need to adjust this. Also good with the "pot" and arranging air supply from the floor.

Here is the comment from the municipality that granted the "building permit":
"You do not need a building permit for the plans you have, but if you are going to install a wood-burning sauna, the sauna stove is subject to notification to us as a fireplace. However, if you have an electric stove, nothing is required at all. If any part comes closer than 4.5 meters to the neighbor, you must have their consent."

Attached is the image I applied for 3D model showing a structure labeled "Bastu" and "Grillstuga," indicating a sauna and grill cabin design with dimensions.
There I have written sauna and grill cabin - however, I did not explicitly write that I will have an open fireplace in the Grillstugan. I probably didn't have that entirely clear in my mind when I applied.
 
Check the measurements, it looks very cramped, you should probably place the fireplace against the wall. You want at least a meter between your knees and the fire, I think?
 
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conol
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Thank you!
Attached is a detailed image of the distance today. It should probably be possible to get a meter around the fireplace, maybe by rotating the fireplace or making the seating area a bit narrower. Good point. Close-up of a 3D model showing distances around a fireplace with tiled top, illustrating proposed spacing adjustments for seating area.
 
tommib
I would say rotate and place against the wall. Then you get benches on both sides but not all around. As a bonus, it becomes easier with supply air, you can take it through the wall.

Cool project!
 
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Anna_H
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Sounds like a good idea. I'll probably put it against the other wall so you can also see the view :-) Good thinking with the fresh air. One keeps learning all the time.

I also think this is a fun project. Looking forward to taking a long sauna and then cooking some good food by the firelight :-)
 
What a dream project :cool:
You must post pictures when you start to finish. :)
 
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Cool! It's a dream project for me as well. Here are some new pictures based on the feedback I've received from your wise minds. 3D model of an interior building project, showcasing a fireplace with surrounding structures and measurements. 3D model of a room layout with flooring, seating, and a fireplace with measurements, seeking improvement suggestions.
Do you see any other improvement opportunities?
 
tommib
No matter how much I like the idea, I believe you're trying to fit too many things into a small space. You won't have any anteroom for the sauna because the grill area takes up so much space, and you'll have a very cramped grill area where a larger fire will quickly make the room difficult to be in due to the heat.

If you're going to do this, the grill area should be separate. Or you should have a larger house for the whole setup.
 
You might be completely right in thinking that I want too much. Besides being a hopeless time optimist, I can probably also count myself as a space optimist :-)
When I made the drawing, it felt like the areas were large enough. However, I do want a space for cooking. I've also fantasized about a pizza oven instead of an open fireplace. However, there's something fundamental about sitting around a fire and cooking...
Attached are the basic dimensions. They should be enough to create something really good, right? :) Floor plan sketch showing dimensions for a sauna (Bastu) and a grill cabin (Grillstuga), measuring 2000mm x 2700mm and 3200mm x 2700mm respectively.
 
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