Posted: 11/09/2016 at 22:47
I use sharp sand (the tonne bags from Wickes are salt free (and yes, I have tasted it!)) and have several size sieves so can grade it myself. This is the cheapest method of getting it I could find. I also do the same with bags of 10mm pea shingle which contains all sizes up to 10mm. I get the sharp sand and pea shingle for making concrete so the grit comes as a nice by-product.