porcelain

[wayne]

customer of mine has bought some matt white 600x600 porcelain from topps. the staff never said to seal but another tiler in the shop they need sealing. i have never sealed any tiles like this but customer is adamant they have to be sealed tell me im not going mad.

[Dave]

Matt finished ..are they a through bodied tile..?...and no glaze i take it..?

[tfs]

Matt porc generally doesnt need sealed. Polished porcelain only need sealed due to the process they have went through to acheive the highly polished finnish.

When porcelain is being machined to acheive a polished finnish they tend to end up with micro pores as a result of the abrasive technique used to achieve the polished finnish. The micro pores are the reason for the tile needing sealed. As matt poreclain has not been through that process they should not need to be sealed.