Dang - loose exterior slide floor component

Well we just got pounded with rain and I went outside , seen something brown hanging from my slide out so I grabbed it thinking a leaf had blown up there , it was louan board. Apparently it wasnt caulked good and water ran down on that little hole and just stayed there.

Guess im gonna fix if. There’s a black sheet on it from the bottom. Is this board a protective board or the actual floor? If it’s floor I will have to take part all the inside. If it’s a bottom can I just take it off replace? I see lots of screws will be undone.

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It’s a 2014 cyclone 4000. This is the fridge side. Under the mini fridge this looks to be the uncaulked spot

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There should have been a black protective sheet on the plywood. Looks like water has already ruined your plywood.

It’s not on that spot but the rest of the slide out has it. There doesn’t appear to be any plumbers outtt under that black trim piece and the end has a hole. I have filled it with lexel and it dried up. The wood is hard now that it’s drying out. I have to figure out how to cover that back up. There’s also 2 sheets of wood. The inside is finished wood on top. I have seen how the floor is replaced doesn’t look hard just time consuming cause my fridge and pantry is a lot to take apart.

Last rv i I own with out slide out awning. I been looking for one but the ones I see have brackets that will hit the big awning.