MgO Board and Panel better than Plasterboard ?

When you use light gauge steel frame walls, you can enhance the life and performance using single or multiple layers of wallboard. Plasterboards and MgO boards have similar structural functions, but they vary slightly for different field parameters. The main advantages come to light when the boards are used in situations where there is fire.
Tolerate flooding – The surface moisture absorption of the MgO board is not more than 10%(after 24 hrs), which is sufficiently insignificant. The Gypsum board shows an absorption of 30% maximum while the plywood absorbs more than 40% of the moisture. This makes the MgO board moisture resistant. The surface hardness is 6 – 8 units, which make it hard enough to tolerate flooding. The bending strength also is sufficiently high. If the area has light to moderate flooding, you can use the plasterboard construction, but when the flooding is severe or extreme, you must use MgO board construction only.

Strength and Flexibility – The ultimate bending strength of the three boards under comparison shows that the MgO board has a value of at least 10~18 Mpacompared to 5.3Mpa of the gypsum plasterboard and the 3.5 of the plywood or Wallboard. This means the MgO board can withstand much greater forces of bending without cracking or losing shape. So, you can use them in places where some forces will be present and be sure that there will be no distortion.

Cracks and collapse – MgO board can be recycled based on proper condition as they have much flexible strength and not easy to deform. But we never heard of any plasterboard can be recycled, their service time also much shorter than MgO board.

Fireproof ability – The plasterboard is not suitable for fireproof and the highest test level of plasterboard is around 30mins, keeping the test temperature no more than900℃. On the other hand, MgO can withstand 1500℃ if it is mixed with other plates likes gauge steel framework. The temperature it bears may reduce a little but not less than 1100℃. MgO can bear up to 1300 ℃ very easily if merged with fireproof board. But it’s important to note that if MgO board is used alone, it will lose up to 50% of its mass by weight when the temperature reaches to 500℃.
Also, MgO board having a thickness of 7mm or above is able to withstand fire-resistance test at least 1 hr under any circumstances. But plasterboard only can reach class A1 non-combustible level or 30mins at most.

Different structures with MgO board and Plasterboard

You can cut, saw, paint, file, or do any reshaping work without distorting the board or warping it for any thickness of MgO board. The good flexibility lends it to be made into any shape without breaking. For plasterboard, it had to be at least 12 mm thick. Weight of panel for whole wall structure will be added too for same requirement. The Density of MgO board also can be flexible from 950 g/cm³ until 1250 g/ cm³ according to different applications, but plasterboard’s density is fixed.
There are several layers of fibre glass meshes inside MgO board which can keep the board more wear-resistant and provide high bending strength under dry and moisture condition. On the other hand, SIP Panels or Plasterboard comes with a completely different production structure that allows only one step forming.

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