Anyway, trying to decide whether to put down tiles or laminate boards
in bathroom.

If you do go for laminate, make sure you use PVA glue on the joins without
any gaps, even if the boards are "click" types. Otherwise, the water gets in
and damage results. You need to be really careful to mop up any spills, too.
You can't just leave large puddles on the floor.

Perhaps if the wife and kids don't like cold tile, you could put down some
electric underfloor heating. You would only need about 150W (assuming it
wasn't the main room heating) and it would seriously take the edge of the
cold floor.

http://www.discountedheating.co.uk/s...able_Kits.html

Christian.