The difference between plaster scraping and putty scraping on the wall.

Scraping white ash is actually scraping walls and ceilings with a mixture of large white powder, talcum powder and cellulose for building on the rough surface of cement. Blowing putty means blowing putty on the wall to ensure that the wall is flat. Usually scrape it three times, and then polish it with sandpaper. This step is carried out before applying latex paint. If it is not polished, the painted wall will be uneven. Science popularization of related knowledge: 1. When scraping putty, try to scrape it in one direction, for example, from top to bottom, and try to smear it evenly. Generally, putty can be scraped three times, the first time can be scraped thicker, but it should also be wiped evenly, and the second and third times can be thinner to make the wall more flat. 2. When scraping putty for the first time, scrape it for the second time after drying, scrape it for the third time after drying, polish it with sandpaper after drying, then brush the primer, and then brush the corresponding latex paint. 3, good quality putty, just use water, add the right amount of water to stir, don't adjust it too thick or too thin, don't choose cheap and inferior putty powder on the market, otherwise it will cause secondary rework and increase the decoration cost. Be sure to choose qualified products, otherwise there will be many harmful substances.