An earthen floor, also called an adobe floor, is a floor made of dirt, raw earth, or other unworked ground materials. It is usually constructed, in modern times, with a mixture of sand, finely chopped straw and clay, mixed to a thickened consistency and spread with a trowel on a sub-surface such as concrete. Once dry, it is then usually saturated with several treatments of a drying oil.
It is an aspect of the mode of improving housing which includes the State Program for the Promotion of Social Housing, through this activity, the floor is replaced by a solid concrete floor 5 cm thick, reinforced with welded wire and polyethylene membrane, helping to improve the living conditions of the State of Mexico.