Institute of window sill: work process, requirements and rules

Installation of the window sill is carried out before finishing slopes and walls. It is also previously possible to paint and past the wallpaper. The device of this design is only part of the common work that are aimed at installing the window. The installation of the window sill is performed in stages: the first it is necessary to glue the support pads to the lower slope. To do this, they are installed to the windowsill. I regulate the position of the board using tabs and level.