Soft floor in 2013 Chalet Class c

[RidinWithNed]

Hello all, I have noticed a bit of a soft spot under the linoleum. Before I tear into things, can anyone tell me what the floor is made of underneath. Is it the styrofoam sandwich I have read about online? Thanks for any advice.

 

[Eagle5]

Greetings Ned,
You can search this forum for:
Soft Floor
and looking at those results, this particular post might be about correct:
https://www.winnieowners.com/forums/f59/soft-floor-in-95-winnebago-24118.html#post240891
Welcome to the forum.
Eagle5