I would like to install a finnished surface on the concrete patio that i installed about 8 years ago, it was poured with 3' footers and only a broom finish was appled with the intention of building a room on top but that idea has been scrapped now. Idealy I am considering expanding the patio and would like to use pavers for a finish but concerned about marrying the extension with the existing slab and also how to apply pavers over the concrete