When to use double-layer gypsum board ceiling?

Generally found in relatively dry building environments, two layers of gypsum board can reduce the risk of cracks caused by excessive dryness in the ceiling. It can also effectively prevent the diffusion of water vapor and has a very good moisture-proof effect. First of all, for single-layer suspended ceilings, they are harder and flatter.

Gypsum board is considered to enhance the crack resistance and moisture resistance of the ceiling. As for the flatness, it cannot be increased by sealing double-layer gypsum boards.

Extended information:

Gypsum board is a material made of building gypsum as the main raw material. It is a building material with light weight, high strength, thin thickness, easy processing, and good sound insulation, heat insulation and fire prevention properties. It is one of the new lightweight panels currently being developed.

Function: Sound isolation. The sound insulation effect of a double-layer separated sound insulation wall composed of thin plates and a double-layer sound insulation wall composed of hollow slats is approximately equivalent to that of a 24 cm thick brick wall, and the sound insulation index can reach 40 to 50 decibels.

Fireproof. Gypsum board is a non-combustible material with certain fire protection properties, and some can be used as a fire protection layer for steel structures.

Humidity adjustment. When the humidity in the air is greater than its own moisture content, the gypsum board can absorb moisture in the air; conversely, the gypsum board can release the moisture in the board and can regulate the humidity in the indoor air.

Reference materials: Gypsum board? Baidu Encyclopedia