I have fitted a new bath and toilet and have dummy fitted the sink. It wont go flush against the wall due to pipework etc. At the moment it is about 3" away from the wall. Whats the best way of supporting it (it is on a full length pedestal)
I was thinking about making a little box type thing that I can attach to the wall and can then seal the sink to it.

Any ideas?

Cant the pipes be moved back normally thay run down inside pedelstal to hide them, if not fix a bridgein piece of wood to wall then fix sink to that make sure you seal it well as it will be subject to getting wet
kip

Make a box from marine ply and tile on top - although a pro would bill you £££ for moving the pipes