"Roof" - is a symbol of certain completeness, height, measure of any knowledge of man, corresponding to the Truth of God's Will, His Commandments, which are reflected in his worldview and way of life.   

"Roof" - is a symbol of the ultimate possibilities of man's spiritual abilities, his highest periods, stages of intellectual level.

NEGATIVE MEANING.

"Roofs" symbolize the various centers of ideological (philosophical, religious) systems and their leaders, which form the so-called public "culture", public opinion, consciousness, worldview of peoples.

"Roofs" is a symbol of ideological "Heights" of various destructive doctrines, pernicious teachings, contradicting the Truth of God's Will, His Commandments, the Teachings of Jesus Christ.

"Roofs" of "Houses of Jerusalem" are fabrications of false prophets, destructive ideologies, religious doctrines of ministers of false religions - "Houses" of various denominations, where their followers are.