Do you have a link to R&J Andy ? please
Try Garside sands Garside Sands. Supplier of specialist silica sands ask for clive
instead of sbr Contact Damien Baxendale at Christeyns and ask for some powder polymer then you just need to add water
CK i thought i recognised Garside Sands (suppliers of the legendary Leighton sharp rendering ) !!!!!!! love to work with it , they say it Lays itself lol..............
Thats it white leighton buzzard render sand