hi im skye and my waterdog coco

Attachment 602Hi im 14 and coco is my first dog ,hes 4 months,very well behaved,but ive had him for 2 month and he still isn't potty trained, its horrible every morning,ive tried every single tecnique,i take him out for about an hour ,he does not GO..,but when i take him home he wees up the stairs :mad: .
He doesn't have a crate i put him in my room,he doesint really wee in there only by the door (when im sleeping and he cant hold it in) but in the morning i open the door and he shoots out and starts weeing ,ON THE WOOD,ON THE SAME SPOT,he has damaged the wood :( ,can anyone help meee???