to seal or not to seal porcelain

[rogerdygas]

I have just purchased some light beige glossy porcelain tiles fron a local independent tile shop. When I purchased these tiles he said they have been nano sealed so don't require sealing. I have read the box and it doesn't say a thing about sealing tthese tiles. The tiles are Italian not Chinese.

The reason im asking about seeling is because my chinagraph pencil has left a slight stain but grouting and leaving blackurant juice on for 20 mins hasnt.

Please can I have some advice?

 

[Qwerty]

I would seal. I use LTP mpg sealer on polished porcelain

 

[Sean Kelly]

Your chinagraph pencil is wax. It will sit on the surface of the tile, but should rub off easily. I would test an off cut of tile with some grout if you are worried it might stain. I personally would not re apply any other sealer to a nano sealed tile.

 

[DHTiling]

They do not require sealing... adding extra sealer will do nothing... A sealer is only to close the pores of the surface that are opening during polishing and nano sealing ( factory sealed) is the way a lot of manufactures are going..

Polished porcelain isn't that porous , it is just the microscopic pores as i said above that grab dirt/stains and make it harder to clean.. so by closing these pores it iads in the maintenance of the cleaning of them etc.

 

[rogerdygas]

Your chinagraph pencil is wax. It will sit on the surface of the tile, but should rub off easily. I would test an off cut of tile with some grout if you are worried it might stain. I personally would not re apply any other sealer to a nano sealed tile.

I.am wondering whether or not they are nano sealed. My chinagraph marker has left a faint mark but grouting hasn't darkened or dulled them