Mapei Ultimate shower proof Ready mixed Cream Tile Adhesive, 15kg

I used on a few tiles of 400x250, but majority on tiles of 350x250 - set fine and strong.

I used rapid set powder mix for the majority of my 400x250 tiles though, as this product says max 300 x300.

I bought this product to re-tile my bathroom (mostly 200 x 250mm ceramic tiles & 50mm square porcelain mosaics). The plaster was a little crumbly in places, so I first treated the walls with a stabilising & priming solution (Everbuild 406), and then primed with Mapei Plaster Primer (the green stuff). I wasn't sure this would work, as it doesn't mention using any kind of primer in the instructions, but in fact the tiles have stuck well. I also used it for the porcelain mosaic border tiles, and again it seems to have worked fine. These tiles have a mesh backing, which helps with the adhesion. As my walls are uneven, I may have exceeded the 3mm bed depth limit in a couple of places, but the majority of the adhesive thickness is 3mm or less, so it has worked ok. When I come to grout, I think I'll wait a couple of days for the adhesive to dry completely, as this seems to have been an issue for other reviewers. The coverage claim on the tub is probably a bit optimistic, but I have laid it on fairly thickly in places. Overall, I think this is a great product, and it seems to have worked well. I'm planning to use Mapei Flexible Coloured Grout for grouting, so I'll be reviewing this product later as well...

Bought this to do kitchen tiles and it had enough movement when fixing the tiles to the wall and was solid and able to grout the day later.
It's much, much better than the Ultimate Super Grip version. The Super Grip lacked in grip and tiles fell off.
Spend the extra 5 quid and get this showerproof one instead.

I bought this to use on kitchen floor 6 weeks into floor being finished have had to relay half and adhesive still hadn't gone off when tiles were lifted

Please do not buy this product!!! I bought it last week and now I have had to take all the tiles off the wall as the adhesive hasn’t set. The worst stuff I have ever used. I should have read the other reviews on this before I purchased it.