"Does anyone know how to Convert English to an Englishman?"
We get into trouble the same way when we refer to a nice fanny on that girl walking ahead of us on a London street. Or when we go into a store looking for a pair of pants, or when we want to call a nurse in the hospital.
Remodel - To tear out the old and put in the new, especially when referring to large sections of a home such as a bathroom or kitchen. http://architecture.about.com/od/improveyourhome/
Shower pan - The waterproof base pan that is laid down before a shower is constructed, usually of tile. It can also be the pre-fabricated base upon which the walls of a shower are constructed. http://www.lascobathware.com/pans_lascoat.htm
Google searches on a high speed internet connection will give you more information than you can possible absorb.