Best Practices for LVP Floor Installation

[John Herold]

Hello all, what are some best practices for LVP floor installation for a manufactured home on a permanent foundation?

The click on / locking type seems like what most investors use, but repairs seem difficult without having to re-do a large area.  Is it possible to fix a soft spot without having to re-do the whole room?

How wet is too wet for existing subfloor?  Are moisture meters used or no?

What do investors use for the moisture membrane(s)?  Right under the wood and/or under the house in the crawlspace?  What materials are used besides the LVP itself?

I have heard that leaving 1/4 " along the perimeter can help expansion issues.  Is this true in your experience?

I assume it's typically best (if it's necessary to do so and if the budget allows) to re-level the home before the floors are installed.  Are floors typically installed before or after the cabinets are put in?

Thank you for your thoughts on any of the above!