Mark 2:3-4

"In order to understand the action these verses describe, it is necessary to visualize the layout of a typical Palestinian peasant’s house. It was usually a small, one-room structure with a flat roof. Access to the roof was by means of an outside stairway. The roof itself was usually made of wooden beams with thatch and compacted earth in order to shed the rain. Sometimes tiles were laid between the beams and the thatch and earth placed over them." [Note: Wessel, p. 632.]

Another possibility is that this was the roof of a porch that was attached to the house. [Note: Edersheim, 1:504.] Mark’s unusually detailed account pictures four men almost frantic to get their paralyzed friend to Jesus so Jesus would heal him. They must have been unconcerned about the damage they were doing to the house and the shower of dirt they sent raining down on everyone below.