Why not take the friendly approach?
Congratulate him on his new room, then explain that you'd like more privacy. Tell him there'll be a bit of noise and dust while you erect the wooden fence extension.
Act perfectly normal as if you know there won't be an issue.
Congratulate him on his new room, then explain that you'd like more privacy. Tell him there'll be a bit of noise and dust while you erect the wooden fence extension.
Act perfectly normal as if you know there won't be an issue.