I'm currently taking up the tiled floor in the kitchen and it's turning into quite a struggle. I need to get back to the T&G plank below the tiles and sub-layer of ply-board.

I've removed all the ceramic tiles with a chisel and I'm left with a layer of screwed down ply, mostly covered in cement - fitted by myself many years ago. The ply underneath seems to be in 3 main sections and there's a lot of screws holding it in place.

After a days toil today, I have managed to almost complete the removal of one of the ply panels, which meant locating screws, cleaning the screw head and unscrewing. Every time, I think I've done and try to lever up the ply panel, there's something stopping it coming up, and I keep locating further hidden screws that need to be removed

Seems that as long as there's one more hidden screw remaining, the ply won't budge, so I've now decided to get a saw and cut the plywood into smaller squares while still screwed down. I'll then remove a small square of ply at a time.

Can anyone recommend a saw tool, that will allow me to cut to a 12mm depth into the ply without cutting into the T&G floorboards below? Hopefully, I can then remove the ply-board a small piece at a time.

I have a multi-saw that cuts well with the oscillating saw disk, but it has no depth setting, so is really no good for this job.

Thanks

cf