What is the second gypsum board ceiling?
Look at the stairs you walk is a level to understand
Two gypsum board ceiling that is with the shape, a ladder, with a slotted, the lights installed in the tank can not see this kind of bulb, like this called the second ceiling. A gypsum board ceiling is the ordinary hanging flat ceiling is called a level.
Level 2 is slightly flawed, such as empty side, squeeze edge, there is little damage does not affect the decoration are considered two boards. Level is perfect no defect.
Two gypsum board ceiling is the secondary modeling of the ceiling. Level is flat top slightly.
