First of all, you need to install a door frame. Boxes are made of hopes 10 cm wide and 5-6 cm thick, which are then used in brick and stone houses. Prepared details fix with spikes, creating a right angle. Moreover, it is necessary to ensure that the boards located above and below are only in a horizontal position. Do not forget about the similar position of vertical boards. After leaving the box and install it. Be sure to fix the box.
You can fix the box with steel pins, which should be quite long and thick. If you have a concrete or brick wall, then you need to make holes in the wall with a drill where plugs made of wood are inserted. And only then score nails in them.
If you install the thresholds, then you will need to raise the floor in the room, at the entrance to which you put the threshold from the side of the corridor.
The inner doors are slightly easier in weight than the entrance, and for the door frame you will need only three bars.
Interior doors are recorded only with nails. If gaps form between the wall and the box, then they can be hidden under the platband. The doors are hung only after the door frame is installed. But before hanging the door, it may need to be tired a little so that it goes to the platband. And then you can already hang. If after that you find that there are surpluses, then the door must be removed again and adjusted to the required size. And then hang it on the hinges again.
The selected loops must also correspond to the size. Fixation of the loops is carried out by screws.
Today, a wide selection of door loops is presented on the market. Highlight such loops as hemisphere, which are only removed; hinged, in which you can remove the rod; consisting of two parts – rod and halves. The size of the loop should correspond to the size of the door.