Ultraflor Plus is a polymer-modified, large-and-heavy-floor- tile mortar (formerly "medium-bed mortar") and thin-set mortar for interior/exterior floor applications of large-format and heavy tile/stone. It is used to install porcelain tile, heavy ribbed-back tile, brick pavers, dimensional tile and natural-stone tile. Ultraflor
Plus is designed for use at 3/32" to 1/2" (2,5 to 12 mm) thickness to minimize
back-buttering and give better support under large-format tile.