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Why does the water-resistant putty come off

Why does the water-resistant putty come off

2022-01-13 16:09:02

1. The amount of HPMC added is too low, insufficient water retention and incomplete charring of calcium ash. (Increase the amount of HPMC cellulose)
2. The purity of calcium grey is not sufficient, the 15% addition is below or at the critical value, and the charring is not sufficient to form a film. (Increase the amount of calcium ash)
3. Unknown composition of the interior wall adhesive powder may contain starch components, reducing the strength of calcium grey. (Recommend to cancel the addition)

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