Hi all,i have a large Kitchen/ Extension with a new concrete slab i've just put down, i plan to run 2"x1" tanalised battens at 300 centers (between which i have to run the pipes to the boiler) then lay an Oak Engineered floor on the battens, my question is as the flooring will be structural is it possible to buy engineered Oak that is 18-22mm thick as it all seems to be 7-15mm. Any help or recommendations would be gratefully received!!!