...use a slow setting adhesive for non-porous tiles on the wall.
Why? If this is the sort of advice you were giving out when you had your shop; it's hardly surprising it didn't work out.
GCol, ok, i've been reading some of the posts from you and your BF JFoss, and tbh, both of you talk crap.
I'll just tell you where im at. If anyone done a sticky and advised me to only use BAL adhesives, and white star a bath area, id be the one running a mile.
Or shall I put it another way, if one of my fixers asked for BAL bucket adhesives and told me they were the best, and to use white star around a bath, or told me that it's common practice to tile walls before floors, id sack him.
Ok, I owned a tile shop for one year, it failed due to credit crunch. I lost quite a few quid in that venture and don't appreciate your little quip. Have you ever had the ****** to try something like that?
I also have been tiling 20 years, and owned a contract fixing firm for 7 years. In that time, we have worked for a lot of the major housebuilders, metronet, and others, the list is too numerous to mention. We do our work mainly in and around London. Currently I have around 15 fixers working for me and have had upto 45 fixers working for me.
I have also been invited to Spain several times to the tile factories, and seen how tiles are manufacturered first hand. Ditto a few of the adhesive manufacturers. I also get yearly invites to the Tile Show London. You?
I know reps from most of the suppliers, including Johnsons, Pilks, Granfix, Palace, and i'm always getting reps calling me wanting my business, including Ardex, Bal and all the others.
It seems to me yourself and JFoss are the "big daddies" here on the Tiling forum, and obviously don't like anyone else musceling in, so don't worry, I won't be sticking around after today, and you can go back to being the Daddies of tiling, advising people to waste money on BAL Products and talking crap, i'll get back to earning money out of my business.
Ok, to answer your point as to why use slow setting non-porous adhesive on a wall, seeing as you obviously don't know why.
Slow setting allows you to work longer with the mix when going on walls, and rapid set isnt neccessary really is it. Porcelain isnt a porous tile, so you need an adhesive suitable for Porcelain - non-porous tiles.
Why don't you ask the training school that trained you?
Chris, don't appologise to him, forums are for posting questions, answers and your views. If you want any advice from a pro company, and not a school trained out of the paper tiler, PM me as I won't be posting here again.