Scrape an open gap
First, scrape the gap into a figure of eight with a putty knife, which is wide outside and narrow inside. The depth is not less than 30-40mm, which is lower than the wall1-1.5mm..
stop a gap
Then use gypsum block dry powder to fill the gap, brush 108 glue and stick glass cloth or kraft paper strips. Then scrape 82 1 putty for 2-3 times, which is the same as the original wall, and polish it with sandpaper after drying.
Configure wall coating
Finally, configure the wall coating, brush the sample first, and then brush it completely after the color is close to the wall.