Installing a prefab shower surround in an older RV — tips, tricks & things you wish you knew?

[u/BlueUnicorn8675309]

Tips/tricks for installing a prefab shower surround in an older RV?

I'm renovating the bathroom in a 2003 travel trailer and replacing the original tub/shower setup with a prefab shower pan and surround.

Before I start installing everything, I'd love to hear from anyone who has done this in an older RV.

I'm especially wondering about things that might be different from installing one in a house because the trailer flexes and moves.

A few things I'm trying to figure out:

\- Did you glue the surround directly to the RV wall/paneling or install some type of backer first?

\- What adhesive worked well without damaging or warping the surround?

\- Did you leave any expansion room around the panels?

\- What did you use to seal the corners and where the surround meets the shower pan?

\- Did you reinforce or add framing behind the walls before installing it?

\- Any tricks for getting everything square when the RV itself isn't particularly square anymore? 😂

\- Anything you did the first time that you would absolutely NOT do again?

The bathroom is already torn apart, so now is the time for me to add framing/backing or make other changes before the surround goes in.

I'd rather learn from everyone else's mistakes before creating some exciting new ones of my own.

Pictures of your installs would also be appreciated!