I think I need to keep ripping out…including the floorboards and a lot of the plasterboard… till all I have is the top of the beams, and I can see the rock wool of the lagging that is between the beams in the ceiling downstairs (I have boarded between the beams downstairs since the picture of the bare beams).
Then I can reroute the electrical up into the wall - cutting, lengthening and rejoining - to get them up into the studwork of the end wall without having any cross the beams and messing up my floor.
The I shim the beams, and start afresh with 25mm ply across the whole floor. That should allow a second layer of 25mm ply and still keep me low enough for the shower pan. I can build up with yet more ply on the rest of the floor area (it is not a big room…).
Removing the floorboards may also help me move the evacuation. If I can get it in the middle of the end wall I can use a 180 length wedi pan (cut to 170cm), with the slope leading to a linear drain in the end wall, which will look neat and makes a lot fewer cuts when tiling.
My remaining worry is how to support the ply off to the right, where it is well off the beam… but if I glue a filler piece between the top of the new ply floor, and the underneath of the old chipboard that remains beneath the rail of the stud wall… 🤔
Is this the best way?
Then I can reroute the electrical up into the wall - cutting, lengthening and rejoining - to get them up into the studwork of the end wall without having any cross the beams and messing up my floor.
The I shim the beams, and start afresh with 25mm ply across the whole floor. That should allow a second layer of 25mm ply and still keep me low enough for the shower pan. I can build up with yet more ply on the rest of the floor area (it is not a big room…).
Removing the floorboards may also help me move the evacuation. If I can get it in the middle of the end wall I can use a 180 length wedi pan (cut to 170cm), with the slope leading to a linear drain in the end wall, which will look neat and makes a lot fewer cuts when tiling.
My remaining worry is how to support the ply off to the right, where it is well off the beam… but if I glue a filler piece between the top of the new ply floor, and the underneath of the old chipboard that remains beneath the rail of the stud wall… 🤔
Is this the best way?