Evening everyone out there!

I have been on the forum now for 2 years or so and have learned a lot from daily searches.

I hope someone can advise me as I am tiling a bathroom floor and was thinking of overlaying floorboards with 'no more ply' as opposed to ordinary ply due to height issues.

My only concern is whether the 'no more ply' will provide adequate strength and support to the floor prior to laying the tiles, as there will be a heavy freestanding cast bath placed on it.

The tiles I am using are polished porcellain 300 x 300 x 10m. What do you think? Will the 'no more ply' be just as good or will I be better off using the traditional ply method?

I was also wondering whether SPF adhesive would be OK to fix tiles or should I use 2 part flex adhesive?

Any advice would be appreciated. Thanks.