How to read this forum, MHs v trailers

[Jenniflow]

Hi folks,

This is my first time to this part of the forum and I certainly have some soft spots in my MH floor and I need to chase down some leaks but first:

Are there fundamental differences between trailers and motorhomes as far as floor and frames are concerned? So would the advice on this forum apply to both?

Or are there certain issues that I need to keep an eye out for in these threads that would not apply to my 1986 345 motorhome?

Thanks!