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Hi everyone, i wondered if anyone can help me out here- Our upstairs floors are pretty bouncy especially in the main bedroom and bathroom/hall with 3.8m span on 2.5 by 7 inch joists.
I strengthened the bathroom with 800 by 160 by 18 sheets of ply screwed and glued, also screwed and glued to new herringbone struts.
Now the floor is quite good.
See the photo from when I only had one bay to do:
The bedroom I just did 2 rows of struts, wedged against the front wall, but it didn't seem to help especially in the middle of the room. Since then I added a sandwich of ply in the middle of the span between the two rows of struts. But it's still not as good as I hoped.
See the photo for one row:
I'm not sure if this is because the joists are so old and splitting, the forces from the struts are disappearing in the cracks, so I should have put the struts only on ply?
Any suggestions? I'm going to put a ply floor down screwed at regular intervals which would help.
Cheers and thanks for reading! John
I strengthened the bathroom with 800 by 160 by 18 sheets of ply screwed and glued, also screwed and glued to new herringbone struts.
Now the floor is quite good.
See the photo from when I only had one bay to do:
The bedroom I just did 2 rows of struts, wedged against the front wall, but it didn't seem to help especially in the middle of the room. Since then I added a sandwich of ply in the middle of the span between the two rows of struts. But it's still not as good as I hoped.
See the photo for one row:
I'm not sure if this is because the joists are so old and splitting, the forces from the struts are disappearing in the cracks, so I should have put the struts only on ply?
Any suggestions? I'm going to put a ply floor down screwed at regular intervals which would help.
Cheers and thanks for reading! John