Are we supposed to be using a particular brand of spackle for best results? I'm in S. Cal, Home Depot or Ace Harware are the easiest supply places. Thanks
If your not using a tight fused EPS (Molded) and are using a cheap construction grade EPS then you need to Spackle.
If you do artwork on your board before glass or you want it white spray a thin coat of:
You can buy the Dap Fast 'N Final at Lowes. I've looked for it at HD but they don't have it. Thin with distilled water.
Lowes is the place to find it as Stingray say's.
Also good point to thin with distilled water.
Straight tap water can cause yellowing!