I know in the rule book it says, clear.
I know in the faq it says "neither block, nor hindering"
i've heard its not clear, and cant place items on it.

Can you place an Item on stairs?

Yes you can, and it's a very effective tool to stop your grounded opponents from getting up to the roof.

Nice sig you have there, Funky.

Makes me wish Lafayette had just "stood there" some time ago. And makes me happy De Gaulle didn't.