This concerns a room in an extension from -75. The room is 4x5 meters, and the floor joists, 50x200 c/c 60, have a span of 4 meters and are supported on a wall underneath. The old chipboard floor is now removed because it creaked terribly. It was glued at the joints but not on the joists and nailed with alternating 3" plain nails and cut nail. Midway along the joists' length, they are reinforced with blocking with a slanted batten in each bay. Nailed somewhat weakly, so I will secure it with screws.
Now we're going to have a 22 mm chipboard floor glued and screwed, then foam and then 14 mm click parquet.
The room has a natural passage across its entire 5-meter length, about 1 meter in from one side. There, I thought of reinforcing with a 45x150 on edge in each bay for stability and to avoid bounce.
Does anyone have suggestions for further reinforcing the joists to avoid movements that over time can lead to creaking floors?
I should add that I hate creaking floors and bouncy floors. It should be stable and not a treehouse.
Now we're going to have a 22 mm chipboard floor glued and screwed, then foam and then 14 mm click parquet.
The room has a natural passage across its entire 5-meter length, about 1 meter in from one side. There, I thought of reinforcing with a 45x150 on edge in each bay for stability and to avoid bounce.
Does anyone have suggestions for further reinforcing the joists to avoid movements that over time can lead to creaking floors?
I should add that I hate creaking floors and bouncy floors. It should be stable and not a treehouse.
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4 meters is too long a span for beams that are 50x200, even with screw-glued particle board on top. The only measure that has a significant effect is to reinforce the beams lengthwise. For example, by screw-gluing a 45x195 beam to the side of each existing floor beam. (And using screw-glued particle board)
After exposing the beams from insulation and old construction debris, I also see that several of the beams consist of 2”7 + 1”2 to make a 2”8. It will be a bit of work to reinforce with new beams and level everything so the entire floor is flat, but it will be worth it. Leveling with the laser has shown a height difference of nearly 2 cm on the floor, and when I sight over the beams, I clearly see different heights.
Yes, it's a lot of work, but the end result will be very good once you've leveled the floor.