Quoting a job for a couple of 'Europeans', They say that on the Continent they don't use a 'chalk' based grout? So 1st question, what type do they use?

Secondly, Their main concern is the grout in the shower areas going mouldy after a time. What is the best grout to use or is there a sealer I can use. Have talked them out of epoxy for the moment if that is an answer.
Cheers John

bal do a microban grout..great product to combat mildew etc......dave..

BAL Microflex Wall Grout

A White cementitious tile grout especially formulated with built-in Microban® antibacterial protection to inhibit the growth of bacteria, such as Listeria, Salmonella, E-coli and black mould. It provides an added level of hygiene protection in bathrooms, showers and food consumption areas. The grout also has built-in admixture to provide flexibility and to enhance the bond to the edges of tiles and mosaics. Conforms to BS EN 13888, Type C, Class G2.

I use this all the time, its really good stuff.

ardex flex fs excellent grout, and easier to use than microflex
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answer to the first question, worked in germany about 15years ago never saw any white grout, it was all grey and beige, even with white tiles it was always manhattan grey, think its because it dont show any discolouration