I work for a plumber who does his own tiling. Current job porcelain tiles walls and floor with same tile. Customer wants the same colour grout on both. As I`ve been landed with the grouting I have a question. 2mm joints on walls and 3mm on floor. I`ve been given 2 different grey grouts to use but neither specificly states that they are suitable for walls, but one does a joint from 3mm the other from 4mm. As I take a bit of pride in my work I have been down this road before and found the floor grout was too gritty for a decent finish on walls. He tells me he has problems sourcing grey wall grout locally, and basically get on with it. Any comments.

try Mapei Ultracolor Plus available in 26 colours including grey and will do from 2 to 20mm.

PS welcome to the forums.

Using general grout on walls is a bit more time consuming, a proper smooth 2mm wall grout is what you want. But if that is all you have be prepared for it sloping off the grouting float or being too stiff to work into the grout lines.
When ive been stuck like this when a client supplies srap gear, try adding a bit of flexi admix, that helps a bit.
Good luck.

Originally Posted by just the boy

I work for a plumber who does his own tiling. Current job porcelain tiles walls and floor with same tile. Customer wants the same colour grout on both. As I`ve been landed with the grouting I have a question. 2mm joints on walls and 3mm on floor. I`ve been given 2 different grey grouts to use but neither specificly states that they are suitable for walls, but one does a joint from 3mm the other from 4mm. As I take a bit of pride in my work I have been down this road before and found the floor grout was too gritty for a decent finish on walls. He tells me he has problems sourcing grey wall grout locally, and basically get on with it. Any comments.

This also does the same 2-20mm.......Gaz
BAL Microcolour Wide Joint Grout ( Gunmetal or Smoke )

A fast setting, efflorescence free, water and frost resistant cementitious grout with water repellent properties and built in Microban® antibacterial protection to inhibit the growth of bacteria and black mould. Suitable for use with ceramic tiles, porcelain, marble, natural stone, glass and fully vitrified tiles with joint widths from 2-20mm in interior and exterior locations including power showers. The addition of GT1 makes this product suitable for use with underfloor heating. BS EN 13888 CG2F Grout.

• Set in 5 hours
• 12 colours available
• Water repellent
• Anti-bacterial

Originally Posted by grumpygrouter

try Mapei Ultracolor Plus available in 26 colours including grey and will do from 2 to 20mm.

im with grumpy on this one ,but personally i dont like the mapei kerracolour gg,as i found it gritty and fell off the float.

Most wide joint grouts are very gritty in texture because of the sand. BAL Microcolour W/J grout is is a more refined less gritty sand, very nice to work with and attain a smooth finish.....Gaz

Originally Posted by GazTech

Most wide joint grouts are very gritty in texture because of the sand. BAL Microcolour W/J grout is is a more refined less gritty sand, very nice to work with and attain a smooth finish.....Gaz

I was just about to ask you about that......you bin watchin Derran Brown?

the gg in the name gives it away.I did know that Gaz but cheers for pointing it out.

BTW- GG (gritty grout)

Originally Posted by grumpygrouter

I was just about to ask you about that......you bin watchin Derran Brown?

Don't need too, I close my eyes and I can imagine it...lol

Thanks for the replies. The 2 grouts I have are Mapei gg 4-15mm and Granfix flexible 3-20mm. Looks like I`ll have to choose one of these, but not too happy as a shower area is included. He`s really testing my patience on this one.

PCI wall and floor grout 2-18 mm joints dosnt fall of your squege :Pete
http://www.pci.uk.com/en/products/TileGrouts/MultiPurposeTileGrouts/PCIWALLFLOORGROUT-New/Pages/default.aspx

Thanks PCI Pete...lol