Hello,
We are in the process of renovating a 1920s house, and after a complete renovation of the exterior and upper floor, we have now started on the ground floor.
We will basically do everything from floor to ceiling, including a new kitchen, changing the heating source, etc. Parts of the ground floor were renovated in the '90s and are in relatively good condition, but two rooms of about 40 sqm have remained untouched since the '20s, resulting in cold and uneven floors (120mm from the lowest to the highest point in one room), so in those two rooms, I have started by tearing everything down to the base, and now I have some questions that I hope the forum can help me with.
1. Best construction solution to level the floor. Today's floor joists slope towards the outer wall to varying degrees; I believe the foundation has sunk over the years, but they are in very good condition and substantial, 200x75. They are placed at cc somewhere between 600-650. The options I see are: remove beam by beam and replace with new ones like 45x220 at the correct height and level, in one room the span is 4.6m. Alt.2 remove and reset the existing joists.
Alt3. Attach 45x220 to the existing floor structure at the correct level, this way I get a flat, level surface above + the advantage that the subfloor gets a new level as well.
One issue that affects all solutions is that there is a tiled stove in each room, but in one room, the stove is such that the floor joist goes directly beneath, and this joist is about 5cm too high along with the one next to it, which has planks nailed and the stove built based on them.
The level must be lowered on both joists + boards to get the room aligned with the rest of the house, but how do I do that without risking the stove collapsing? The only idea I have is to screw a joist between the wall joist and push up against the planks that the stove rests on for support, then cut them in front of the stove so we can lower the floor joist.
Is there any other idea?
I'm adding some more pictures of the rooms.
