Filling wide black joints in tiled floor, buy any grout?

[wd41]

I have an older bathroom in the basement that I want to spruce up a bit. The grout lines are black and a lot of the grout is missing. Could it be that they used the adhesive behind the tiles as the grout? The grout is coarse and rock hard.

I've looked around in different bathrooms and the grout lines seem much harder. I went to Bauhaus today but they didn't have any black grout in the bathroom section. I've surfed around online but I'm not getting any wiser (help).

Is there any other mortar that is black or very dark? As I said, it's just to fill in, the waterproofing isn't visible.

edit: I would also benefit more from a sack of black adhesive than grout (I think).

 

[Jonatan79]

There is dark gray at least, it might suffice. Do you have pictures?

 

[wd41]

There is dark gray at least, maybe it will suffice. Do you have pictures?

Link or where?
Looks like a different color in the pictures, they had dark gray at Bauhaus but mine is darker

also it was grout and I think it will be too soft like the one on the wall

do you use the same grout for floor and wall?

 

[Jonatan79]

It is fine to use on walls and by the floor, and yes, I was actually thinking about Bauhaus' range. Lip, I believe, has anthracite gray.

 

[wd41]

It works well to use on the wall and by the floor and yes, I was actually thinking about Bauhaus' range. Lip I think has anthracite gray.

Thanks, what is Lip?

 

[multix]

https://www.hornbach.se/shop/Kakel-...-klinker/Fogbruk/S16886/artikel-listning.html

SIKA Grafit is the darkest at Hornbach I think. I chose it but wish I had picked a lighter one since soap residues and other "mög" become very visible on a dark grout.

I think Hornbach charges less than 70 kr for shipping.

 

[BirgitS]

Thank you, what is Lip?

Lip is a manufacturer.