We had a leaky ceiling in the bathroom two years ago. It rotted the ceiling down to the lathe. I've been waiting for my husband to fix it, and he hasn't. So, I've decided to take matters into my own hands and do it myself. Of course, I don't know the first thing about fixing this problem. HELP! Part of the ceiling (over the bathtub) and outside wall are down to the lathe. Please give me step by step instruction. I greatly appreciate it!