Mezzanine Floor Kits Mezzanine floor kits could be the solution to increasing your shed or warehouse space at a budget price. A mezzanine floor is defined in Wikipedia as follows:- “ A mezzanine (/ˌmɛzəˈniːn/; or in Italian, a mezzanino)[1] is an intermediate floor in a building which is partly open to the double-height ceilinged floor […]