Laminate flooring - how thick?

[Epiphone]

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Got hold of some of this the other day, 15 mm water-resistant plywood, with 1 smooth side and 1 anti-slip surface. With the brown finish, you could almost leave it like that. But plan to fit vinyl wood effect tiles, which are meant for bathrooms,kitchens etc.

measurements for the 2 pieces where

1X - living space
width - 125cm (limit of the board for sale)
length - 153cm (approximate size of the living space floor with obstacles (multivan interior)

1X = basically the size of the space under the bench
width = 31 cm - has left a 1 cm space, which I can fill with some foam/rubber to it doesnt touch the engine compartment metal directly
length - 153 cm

[Epiphone]

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so ontop of the 15mm plywood base, which is approx 2.3 sqm, ive installed 2.2 sqm of self adhesive vinyl tiles in oak-pine finish, which are like 2/3 mm thick, but are very textured, like wood.

I simply used the cutoffs from each plank under the seat bench, so it doesnt go all the way back, but then I now have a new kickboard from the same plywood as the base, which covers it up nicely

stuck it to the smooth side of the plywood base and the rough side facing down onto the insulation, I havent fastend the board down.

looks very good and nice to touch too