Colorado Grey Slate Effect Anti Slip Matt Porcelain Wall and Floor Tile

These do not require sealing, however, you can use LTP Porcelain Tile Protector (SKU: LTP391) to help with future cleaning

They could be laid at a maximum of a 33% brick bond.

These tiles can be used outside provided they are laid onto a cured concrete base and adhered using an exterior tile adhesive.

Yes, these tiles are suitable.

These tiles can be cleaned using our LTP Porcelain Tile Cleaner SKU: LTP101.

Yes, provided the tiles are installed onto a cured concrete base and adhered using a full bed of exterior tile adhesive.

Both are suitable but ultimately this would be a preference call. We would advise discussing this with your trade to see which they would be most comfortable using.