I am in the process of helping my Mother move into a 5th wheel. She will be living in it for a while. We are trying to redo some things in the trailer. I have run into a problem and was hoping someone here could tell me what to do. We are needing to remove bunk beds in the back of the trailer but under the bottom bunk it is used as storage and the outside storage door opens to under this bunk. I am not sure how I can seal this off and make it to where water and the cold don't come in. I am very new to all this and any help you can give me would be so appreciated. The reason we are moving the beds is just to give her more storage space.