I'm going for Solid Bordeux Pine t&g boards curtesy of wickes in the hall living room and dining room, Can I just lay them as a floating floor ontop of the bare concrete ? and i assume just glue the t&g with something suitable.
Please remember pine is soft-wood, we wouldn't recommend that in hallways (heavier traffic, sand, grit under shoes etc).
You can install floating, but get some DPM+insulation down first (2 in 1 products available, not sure Wickes have. know they have DPM but that is folded from 3 meters wide and can be difficult when using in narrow areas).
Use proper PVAC adhesive to glue T&G (get the glue in the bottom og the groove to prevent spillage on top of the board when pushing boards in). Glue the groove completely, not just some drips here and there.
I have this in my lounge straight onto floor joists using floor cramp to pull the joints up tight & secret nailing. I'm not sure how the joint will pull up tight as a floating floor though. Some of them do have a slight bow and this is when the swearing start, I'm not trying to put you off though as I maybe wrong.