Solid oak floor in porch and hall.

[petewood]

The porch has a concrete floor, the hall has softwood floorboards. I am thinking of using solid oak T&G, (137mm cover). I have been advised to lay the new floor in the hall onto cork backing and to secret nail onto old floorboards.
In the porch I will lay a dpm, then cork backing, and the floorboards clip together with stainless clips that fit into grooves machined into the back of the flooring (don't yet know whether or not I need to glue the boards together).
Am I going about this the right way, any advice would be most welcome.

 

[WoodYouLike]

Porch and hallway: wet shoes, dripping umbrellas etc.
Although the floor you're thinking of is not that wide, you might be better of wood-engineered boards.
If the original floorboards are pretty level, than you can also install the boards floating (but perhaps you need to install some hardboard first if the boards run the same way as your new boards will to minimise draft).
Cork backing is one type of underlayment, there are several other suitable options.
Clips sounds to me as Junkers flooring (or a copy of). Experience has taught us that they never supply the amount of clips with the flooring they recommend you to use. Some are in favour of clips, some are not. Junkers is been using this system for ages now and are pretty good, copies of the system though are mostly rubbish and you should glue the T&G also (and even forget about the clips, they just fall out of the boards the minute you try to install the boards

 

[petewood]

I must admit I hadn't thought of that, although I have never seen puddles of water in either of these rooms from shoes or brollies. Also, isn't that hardwax (osman?) pretty impermeable to water?

 

[WoodYouLike]

Yes it is (osmo HardWaxOil), under normal circumstances, but don't tempt fate
A porch normally gets more wind and rain and cold temperatures than any other room. IMHO a wood-engineered floor is better.