Can outside wall be removed from outside to replace rotten wood and Styrofoam on 2002
 

I have a 2002 19TL with fiberglass walls with square metal frame and rubber roof. I need to replace all wood on sink stove side and a small, I hope, piece in the roof. I am ready to start and need info asap because i am out of town at cousins place to do the work with his help. Thanks in advance David Flick. Feel free to call @ 770533138six

I am replacing from the inside on a 94 funchaser pics in the photo section