ian wrote:

Sanding takes hours and hours, already done one room and the mess it makes is
unbelievable.

Yes, it certainly does. If the boards are softwood, it's actually
cheaper (by my calculations) to lay a second lot of softwood T&G
floorboards on top than it is to sand them. You get a more solid floor
too. The only downside is that access to the underfloor void is further
restricted.

--
Grunff