Pictures Potential grout issues with tile

[JordanLincs]

I have a job coming up and I've been told they are porcelain. I'm yet to see the tile in person. The surface looks like I might need to be careful when grouting. Any advice?

 

[Tile Shop]

They should be fine to grout as normal if the are glazed porcelain, but if they are textured or if you're using dark grout (eg black or anthracite) do a test on a spare tile to see how easy they are to clean. If it stains or is very difficult to remove, apply some temporary sealer like Bal Protective Sealer and re-test to ensure it does the job. Should make them easier to clean and the sealer should automatically come off during the cleaning off process.

 

[Dumbo]

Just had similar .
So what I did was two things .
1 get a tiler and do an acid test on it in case you need it . This is to know you don't wreck the tile with acid
2 , also test with bal pre wax sealer to see if you use that on the tile that it will come of ok .
Other than that work as clean as possible and maybe grout smaller areas before clean up and use two water buckets when grouting .

 

[Joshjupp]

I just done some tiles like that and grouted with anthracite they were fine just grouted a small area at a time and kept it clean