After leveling, gypsum can be completely dried at 1-2. After gypsum is completely dried, putty can be scraped in batches. The drying time of gypsum is related to the local weather. If the humidity is high and the temperature is low, the drying time of gypsum will be prolonged. If the local weather is dry, the gypsum can dry out in about 1 day. It is not allowed to scrape the plaster in batches if it is not completely dry, otherwise the putty layer will be moldy and cracked easily.

Before scraping putty, you can also judge whether gypsum is dry. For example, dried gypsum is generally white, while undried gypsum is gray. Touching the plaster wall with your hands won't give people a sense of humidity, and there will be dust on your hands, indicating that the plaster wall has been dried out. You can also use sandpaper to polish gypsum walls. When the plaster wall dries, dust will fall.

Second, what should I pay attention to when leveling with gypsum?

1, when using gypsum, you can't scrape gypsum directly on the wall. You have to lay a fiber net on the wall first to make a press net. This can avoid the problem of gypsum wall cracking. Not all walls need to be leveled with plaster. If the flatness of the wall is good, it can be leveled directly with putty.

2. Pay attention to the thickness of gypsum when scraping gypsum. Gypsum can't be scraped too thick, generally about 3-5 mm thick. If the gypsum batch is scraped too thick, it is easy to crack the gypsum wall. Gypsum is more suitable for small area leveling. If the wall needs to be leveled in a large area, it can be leveled with cement mortar.