I have bought an old house which has a sink in every bedroom! I've removed them all and capped the pipes under the boards. However, one set of pipes and waste pipe are coming out of the wall (horizontally) and are plastered in to the wall, and I want to remove them or cap them off (never to be used again). Can anyone suggest the best way of dealing with these pipes? Do I need to dig them out of the wall and cap off below the boards here too?