||03-17-2011 03:12 PM
Washing surfaces before BIN coat
I happened to be reading the back of the BIN primer can, Zinsser Pigmented Shellac. Curl up with a good paint can once in a while. I noticed that it says not to use TSP, trisodium phosphate, as a cleaning agent prior to use. Knowing that I'd never seen that before and concerned that they discovered something and previous jobs might be failing, I called Zinsser. Plus, I've recommended it in this forum. It is a new warning. Turns out it is okay, but they tell you not to because people aren't rinsing after it's use, seems the dreaded sanding aversion has now spread to rinsing washed surfaces. Apparently, not rinsing leaves a chalky surface that prevents the BIN from bonding and it fails. I'm good, but if the problem is so widespread that they have to put a TSP ban on the label, a lot of guys probably aren't. Too bad. That's a shame. This is why we don't let children play with matches, because they can't be responsible with them and use them as they're intended. Ain't that some poop. BTW, I inquired about moisture levels with him, and they like no more than 12% before priming.