Conne, you say that he does not 'ask' to go out but most dogs just stand at the door as their way of asking. My dog doesn't even do that, she just gets a bit restless and starts wandering around. I then say 'do you want a wee-wee' and if she does she will get exicited and then go to the door. Have you trained your dog to wee on command? This helps, as you can take him out and tell him to wee at regular intervals, thus avoiding puddles in the house. Perhaps not so easy to do with an older dog though.