Hi
A bit of a post-mortem report.
I wonder if we did the right thing when we corrected a slope that was visible on the last 8 floor joists out of 10 in a 5.20 meter long floor in a kitchen?
What we did after a quick recommendation from a building supply store was to check the sills (standing on the basement foundation wall, to make sure they weren't rotten) and then build up with oil-hardened masonite on the floor beams so that the slope disappeared.
Moreover, it's more likely to slope towards the outer wall if the sills are rotten.
In our case, all the beams sloped like trip trap trull, i.e. each beam was horizontally lower, but no beam sloped "down" towards any outer wall.
The inspection didn't say anything about the sills (those that the floor joists rest on), meaning they shouldn't be rotten. The inspection of the house before purchase was done 3 years ago, and the sills should still be okay since we haven't had any water leakage since then. Very difficult to find them for a layperson since there are inner walls in the basement.
The house is on clay soil, and most houses in the area from the 1930s have settlements or slopes.
Would probably have looked strange with a slope of 2cm over 1.5 meters?
I think we did the right thing overall?
