To dream that you are on a roof symbolizes excitement and creativity. To dream that you are falling off a roof signifies that you may not have a firm grip and solid foundation on your advanced position. Consider also the expression‘to hit the roof, which means you have become enraged. Are you angry at the moment? To have a slate missing means to be a little slow, so are you missing the point of something? To see a ceiling in your dream represents your mental or spiritual perspective.
Chimneys in dreams generally symbolize warmth, tradition and family values. The condition of the chimney reflects how we deal with our inner emotions and warmth.
If your dream contained a smoking chimney, its smoke signal imparts a message of emotional warmth. The image of a dream chimney is, in addition, laden with sexuality, male and female, depending on whether the chimney is viewed from the outside or from the inside. [1]