Uneven Floor

[charlie1]

Get it as tight as possible to the walls, do the depending which way the joists are running, you may need to add more noggins to support the new height.

 

[Monkey Wrench]

Your raising the whole floor?

The floor drops about 25mm from the door to the window (opposite the door) and the joists run from the door to the window.The distance from the door to the window is 1.98m so I guess the whole floor will need to be pulled up to level it properly. I was intending to use a circular saw as I don't have a reciprocating saw, but this would then leave an edge of board around the wall the same width as the guard on the circular saw.

 

[SJPurdy]

if the floor joists are spaced at greater than 300mm c/c then new noggins should be spaced at 300mm c/c before relaying the floor.
Steve

 

[Bubblecraft]

The floor drops about 25mm from the door to the window (opposite the door) and the joists run from the door to the window.The distance from the door to the window is 1.98m so I guess the whole floor will need to be pulled up to level it properly. I was intending to use a circular saw as I don't have a reciprocating saw, but this would then leave an edge of board around the wall the same width as the guard on the circular saw.

As I've stated in one of my posts, you could put boxing around where the floor has the left over P4/P5. If not, you could use your circular saw first & cut the remaining board off with a normal handsaw. Just drill 4 or 5 18mm holes with a speed bit starting from the corner & use your handsaw to do the rest. It's a bit more work but would eliminate the need for boxing.

 

[destroyer2813]

Could you not just make up the lip with offcuts of Hardibacker if you cant cut tight enough