Hi Peter

Thanks for the links etc.

In another thread, whitewood plain (non-T&G) floorboards were mentioned
(from Jewson, IIRC). That would be an easy, modular, way od doing the job.
The wood would have to be treated and normalised (but even OSB needs
normalising).

Yes, I will price up floorboarding to check the relative costs. I've a
feeling 4ft by 2ft panels will be easier to lay though.

by 'normalising' I assume you mean leaving in the appropriate atmosphere for
a period of time?

Thanks
J^n