Best way to put pine T+G onto chipboard floor?

[quatro]

I have the chance of some reasonable pine floorboards and was wondering how to lay them - the flooring here is 22mm chipboard.

Is it best to use underlay and float the floor -

Or to nail or screw down onto the chipboard?

Should I use secret nailing - and do they move in time?

Or use flooring brads

Or screw down

....and I'm assuming it would be ok to do all fixing onto the chipboard [not necessarily where the joists are], and that an expansion gap is needed.

Also how does pine wear? Doesn't it get harder [and darker] in time? Though I know it is a soft wood......
Thanks for any advice and experiences.

 

[WoodYouLike]

Pine is softwood and will indent easy. Pine also tends to turn a bit orange after a while, you could limit that by applying a darker finish.
As long as your room isn't wider than 5 - 6 meter the floating method is most easiest.