It is necessary to moisten the roller abundantly in warm water and go abundantly along the surfaces of the walls. After that, remove the layer with a spatula,. It is necessary to walk through a poorly sooning paint with a hammer, lightly tap the surface of the wall and remove the paint with a spatula. Using this method, it is worth remembering that while removing the paint, putty may suffer a little and you need to be prepared to correct the irregularities.