Hello, I am thinking about installing a wood stove in the kitchen as the chimney passes through there. The house is a 1 1/2 story villa from the 1940s with a basement. The problem is the weight of the foundation and the stove, I don't think I have a concrete slab under the floorboards to build on. However, in the basement, there is a brick wall running from the chimney to an exterior wall, and the foundation should be positioned directly above it. The foundation will probably be about 88 cm wide and 60 cm deep with a stove of 60x50 and a wood storage underneath, so they are not huge items, but still :S How should I proceed? Should I cut up my old wooden floor to see what it looks like? Reinforce it somehow, or just place everything directly on the floor? From below it's difficult to access because the boiler is in the way! Very grateful for any ideas. Have a nice weekend!
 
You can build with lecablock. These are not very heavy. The wood stove itself does not weigh more than two people can carry. Allowing the stove to stand on legs made of iron or steel is a variant that makes it even easier, but it looks nicer with a built foundation.

Erik
 
Yes, we have been thinking about building with bricks so there won't be any cast iron legs, although they're nice! A large contact area with the floor should spread the load more than four points. Leca might work, but I'm not sure how well it retains heat compared to aerated concrete blocks or bricks? Weight/heat storage is priority one. I had my mind set on aerated concrete blocks, but I'm open to all options:D I also checked with Mookåpan, although I don't know how much their ready-made stove bases weigh, but it cost over 6000 kronor, so it feels out of reach right now anyway...
 
I believe that lightweight concrete and lecablock are equally poor at storing heat. If you want something that stores a lot of heat, a rule of thumb is that it should be as heavy as possible.

There should be an air gap between the stove and the masonry. Then not much of the stove's heat is stored in the wall, regardless of what it is made of. Even if you fill in with mortar so that the wall is right up against the stove on three sides, the amount of heat stored is limited. Most of the heat is emitted from the top of the stove, which you probably haven't planned to enclose.

What I'm trying to say is that you should prioritize weight but forget about heat storage.

Erik
 
Okay! Thank you so much!
It's as true as you say! Low weight comes first, but you'd like to know where the limit is!
Don't they usually extend the chimney a bit at each floor?
Probably need to cut up the floor anyway! ;)
 
In my mom's summer house, I have redone the installation of a wood stove on the upper floor. Originally, there was a crafted wooden wood storage box with the opening at the front on top of which lay a layer of brick. The stove was placed on top of the brick.

I started by laying tiles on the floor. On top of this, I built a foundation of concrete blocks in the form of two pillars. The stove stands on top of this. There is a space under the stove between the pillars where some wood can be stored.

In post #8 in the following thread, there are pictures from before and after.
http://www.byggahus.se/forum/byggnadsvard/137263-mala-runt-nyinstallerad-vedspis.html

Now, I don't know anything about your floor, but I doubt that there would be any problems with strength if you build with aerated concrete or concrete blocks. All in all, it should weigh under two hundred kg, and hopefully, the floor holds just as if two big guys were standing next to each other.

Erik
 
Thanks for the help and the link to the nice pictures!
We'll go with that option, but just to be safe, I'm going to weigh everything together, so we know what they weigh if someone asks:D
Take care, best regards, Hampus
 
Give us pictures later :)
 
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