Regrouting bathroom tiles

[wobblebobblehat]

The grout between our bathroom tiles has gone very grey and porous. No amount of scrubbing has worked!

I am thinking about regrouting. Has anyone done this? Is it easy?

Yes done it, no not easy. It produces more dust than you can imagine...best to remove everything that you can, then seal the door on both sides with dust sheets.
Good luck!

Get a tube of grout renewer, 8.99 from b&q