Hi all - I've just done a DIY tiling job on new tiles using Mapei medium grey grout ultracolor 112 for the grout. I've used Mapei Ultracolor for loads of projects but never that exact shade, but have never had a problem before. Frustratingly it's dried with really inconsistent colour with some really dark patches. Next to those patches it seems really light so I'm assuming the pigment has for some reason separated out. I didn't mix mechanically as only a small pack, but I did mix it for ages by hand, and it's nothing different to what ive done every other time. After some quick reading online it seems that other people have had issues with this particular shade so I'm wondering if something is up with it? It'd be great to know some suggestions of what's gone wrong, but at either rate I need to sort it and really don't fancy raking it all out. I'm considering trying a light top up with another go; risky of flaking too high?
Thanks
Thanks