What should I do if there are cracks in the walls and ceiling of the newly renovated house after half a year?

Treatment of cracks in insulation board. Cut the crack as deep as possible with a putty knife, and then fill it with gypsum. Be sure to fill it in. Then use bandage, bean wrap cloth or white polyester cloth to paste the cracks, dry them, and then scrape putty or do other technological treatment. If the crack is serious, it can also be repaired with kraft paper or newspaper, and the effect may be better.

The reason why cracks appear after the gap is filled with ash is that the drying speed and shrinkage rate of cement mortar are different from that of putty powder. After the putty on the wall was dry, cracks appeared before the cement mortar inside was dry. Therefore, gypsum powder is better for slot patching.

If the wall putty is scraped too thick at a time, or the thickness of the whole wall is too wide, cracks will also appear. Seriously, it will fall. If necessary, it should be scraped several times, thinner at each time and longer at intervals. However, it should be noted that the putty is scraped many times and easily falls off. ?