Re: Is Play sand Kosher? All sand is high heat. The melting point is in excess of 1700 C. In glass making they add soda ash or pot ash to brink the melting point down to 1500-1800 F (probably vaious other things too, depending on the glass type being made).
For mortar, just use the finest sand you can find, unless you plan on extra wide joints. I don't think there is a true specification for each type (at least no one around me knows of it). I've seen play sand, brick sand, mason's sand, white pool sand, white stucco sand, brown stucco sand, and just plain sand.....they all seem a bit different, or not. Each supplier only seems to carry 1 or 2 types and the next guy may have the same stuff but calls it something different depending on what his target demographic is. Unless you know a mason and go to his supplier and use the same terminology, it is a confusing mess.
RT |