Start with the baseline
Changing the gypsum source, water-to-powder ratio or mixing method can change an additive test result. Record and control these variables before comparing grades.
Change one variable at a time
Poor setting, workability loss and bubbles can have several causes. Changing multiple additives at once makes diagnosis difficult.
Validate under application conditions
Assess setting time, spreading, adhesion and the final surface using the actual application method. This overview draws on Celotech’s troubleshooting guide.
