Under what circumstances with two gypsum board ceiling
Clearly said that the two layers of what is the gypsum board ceiling, 600 * 600 mineral wool board it? Or 1220 * 2440 gypsum board, or a secondary ceiling design decoration requirements.
The top can be the case of the host, the case of the request.
In theory, double gypsum board is considered to enhance the crack resistance and moisture resistance. Double gypsum board construction, to be full of polyethylene emulsion, double gypsum board really play a role. In the ceiling of the overall structure of the distortion, deformation will improve the intensity of anti-cracking. Add a layer of gypsum board and a single layer of gypsum board is the same effect of the final decoration, whether the top surface cracking is another factor affected by the surface of latex paint and other processes. As for the moisture resistance, single and double layers have a large gap, there are moisture into the ceiling within the gypsum board will absorb most of the water vapor, and then slowly volatile, does not affect the effect of surface coatings.
When the room building structure is dry is not very good when using double gypsum board ceiling, is to consider the enhanced ceiling of the crack resistance and moisture resistance. In addition, in the use of light steel keel outside the wooden keel ceiling, in order to avoid the wood keel caused by the moisture cracking, but also the use of double gypsum board ceiling.