Uneven Carbonation & other Plaster Discoloration | Calcium Issues, pt. 5
00:00 - Intro
01:49 - Most people mistake this problem for scale. But it's not scale.
05:05 - This is a chemistry issue, not specific to brand of finish or pigment. This is not a cement or pigment failure, it's a water chemistry problem that can be prevented.
06:01 - How this occurs during plaster application, exposure and startup.
15:36 - How this occurs months or years later, from aggressive water over time.
21:04 - When we get calls about these issues, the answer is not always good news. We are not in the business of pointing fingers at who caused what.
25:45 - Two causes of etching: not…
The skinny
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