Hello,
I'm about to grout my wetfroom floor (900mm x 900mm) laid with porcelain mosaic tiles.
The area beneath has been tanked with Tilesafe membrane.

Now, I'm unsure on which grout to use, Epoxy or Cement based. I've used Mapei ultracolour in the rest of the bathroom floor/walls.
I understand that cement grout is not waterproof and will allow water to seep through gradually.

I've also researched that it may be better to use epoxy based grout in wet floors, as epoxy grouts are waterproof & make cleaning easier.

I'LL appreciate any views, and advice which grout to go for.

Kind regards

how powerful is your shower I would use std under normal conditions

I'd use standard grout, mapei being a preferance

The area is tanked.. so use Ultra colour.. this will match what you have done, switching grouts will look awful..

As above, Ultra Colour will be fine......

Thank you for the kind responses guys...
I'm using a 2 bar shower.
The whole family of 4 will be using it everyday.

I was planning to use Ultracolour (112), but was concerned about long term water seepage.
Although the subfloor has been thoroughly tanked, I was thinking what if water builds up gradually underneath, over the years.... I've heard that it can squeeze back up through the grout...if it cannot find its way back into the drain....

Thats why I am considering using Mapei Kerapoxy which is totally waterproof and is available in same colour (112) so colour match will be same.

Any other benefits the Kerapoxy has over ultracolour apart from the fact that it is waterproof & stain/chemical resistant? I know epoxy grouts can be a little tricky to work with...

regards

epoxy is better but if you have used standard grout already then as advised above continue to use standard grout

Thanks Jay, Are the two different in texture? The Ultracolour is smooth & non grainy.

I've only used the ultra grout and had no problems

when in doubt use de best epoxy clean well with hot water !!!

Originally Posted by ap222

Thanks Jay, Are the two different in texture? The Ultracolour is smooth & non grainy.

yes there is a visable difference and normally a slight color diff

Hi ap222, dragging up an old thread but how did you get on? did you use kerapoxy? or a std cement based?

Im in the exact same position as you

Im thinking of using kerapoxy on the entire floor of the bathroom

or the wet area at very least

use epoxy in the cubicle are and the floor, if the rooms not that big just do the lot

search epoxy on here and you will find threads with tips and instructions for its use

Now I am into this epoxy malarkey I'd use that any time, if something surefire reliable is available, why not use it?