Cement board, magnesium glass board, calcium silicate, Ette board, FC board 1.
What is the cement board?
Cement board, magnesium glass board, calcium silicate… What is the difference? Where are they used respectively?
The characteristics of cement board
Compared with the previously mentioned base plate and gypsum board, the biggest advantage of cement board is “invulnerable to poison” “fire and water”.
Listen to the name can be understood, after all, people are cement ~ and wood is completely two concepts, with all the “cement-based” materials have common advantages: a. Fire insulation: cement board
a, fire insulation: cement board fire rating are non-combustible A class.
b, waterproof and moisture-proof: this determines its use in indoor spaces.
c, long life: acid and alkali resistance, corrosion resistance, and will not be damaged by moisture or insects and ants.
d、Strong processability: it can be sawed, drilled, carved, painted, tiled, wall cloth and other materials according to the actual situation.
e, no formaldehyde: this is well understood, there is no glue involved in the natural release of formaldehyde.
At the same time, as a board, it is the raw material of cement, compared with wood panels, there is also an inconvenience: can not be bent on site, to do the bending of the cement board, must be customized by the manufacturer, and expensive.
The most common specifications of cement board are: 1220×2440mm, 1200×2400mm.
Thicknesses of: 2.5, 3, 5, 10, 12, 15, 20, 30mm, etc..
Manufacturers with strength can customize any thickness within 2.5~100mm. The thickness below 4mm is called ultra-thin board, 4~12mm is called conventional board, 15-30mm and above is called thick board, 30mm and above is called super thick board, the cement board used for interior decoration is mainly conventional board (4~12mm).
Even the fiber cement board itself is relatively heavy (fiber cement board is a cement flat board with fiber and cement as the main raw material), if the ultra-thin board of 3~5mm thickness is used, it will be easy to break and break, so when installing the cement board, it will cost more labor cost compared to other base boards, and the cement board itself is also more expensive than other boards.
In the project, unless other boards cannot be used, cement board will not be used as the base material unless it is a last resort.
1、Separate the material cognition first
The advantages and disadvantages of “cement-based” panels are mentioned above, but what exactly are the “cement-based” panels? Or, what does the designer mean by cement board?
Perhaps the partners have also consulted, the answer should also be very different, there are Ette board, FC board, cement pressure board, fiber cement board, fiber cement pressure board ……
And almost all construction drawings labeled base material, there will be a different call, the common are cement board, Ette board, FC board, cement pressure board ……
In fact, this in the interior design industry, and do not have to feel strange, it is the same as the wood veneer industry, the same material, the same practice, the same base material, may only be different surface texture, can be called by manufacturers and designers a variety of strange patterns, but the essence is still wood veneer.
So, cement board is the same, it is just a general term, as long as there is cement involved in the production of the board, can be called it cement board.
As designers, we can keep it simple, we just need to remember that cement board has 2 classification dimensions: the difference between strength and fiber.
a. According to the strength from low to high, it is mainly divided into: non-pressure board (ordinary board), fiber reinforced cement board, and high density fiber cement pressure board.
b. According to the fiber used in cement board, it is mainly divided into: chrysotile fiber cement board, non-asbestos fiber cement board.
2、Next classification description
a. Ette board: a kind of fiber-reinforced silicate flat board, which is a kind of fiber cement board. It can be seen from the positioning in the picture that it has high strength and no asbestos, so its quality is better than ordinary fiber cement board.
It is not difficult to explain why many design projects are labeled with Etter board. Remind one thing: Etter board is the same as Ozon board, it is just a trademark brand.
b. FC board: It is the abbreviation of fiber cement board, and its strength is slightly weaker than that of Ette board, meanwhile, FC board is also a trademark.
c. Fiber cement pressure board: it is what we call cement pressure board, the properties and performance can be referred to the coordinate chart.
It is added here that both FC board and cement pressure board can be divided into 2 types of chrysotile and non-asbestos, but there are mostly chrysotile cement board in the market, so it is counted as chrysotile cement board in our diagram.
d. Ordinary cement board: It is the lowest grade product commonly used, not made with added fiber, cheap and low strength, and has been rarely used in interior decoration projects.
PS: Asbestos fiber is a carcinogenic substance, so asbestos fiber cement board can not be used in hospitals, food factories and other buildings, and the board without asbestos fiber is made of paper pulp, wood chips, glass fiber to replace the asbestos fiber to play a reinforcing role, such as Ette board.
3、Calcium silicate board Take out to speak (a little more content)
With the above knowledge, it is the same as mastering the essence of cement board, based on this foundation, and then to understand the calcium silicate board is much simpler, we just need to remember the following 4 points can be.
a, calcium silicate board and cement board processing raw materials are different, one is calcium silicate, one is cement.
As a decorative plate, calcium silicate board has all the performance characteristics of the cement board, but the cement board is more superior than calcium silicate board.
b. The conventional thickness of calcium silicate board is about 6~12mm, while the thickness of cement board can be 2.5~100mm.
The most thickness range of calcium silicate board is from 4 to 30mm, and the thickness below 4mm and above 30mm cannot be made.
c. Due to the difference of weather resistance, calcium silicate board is suitable for interior base and can replace gypsum board for indoor ceiling and wall, while cement board is mostly used for exterior installation.
d. The price of calcium silicate board is lower than that of cement board, but judging from the aspect of view and touch, non-professionals can’t see the difference between them at all.
Therefore, in many interior design projects, although the drawings are marked with cement board, the construction unit will most likely use calcium silicate board instead of cement board ……
4、The application in practice
a. In interior decoration, cement board can be processed into various kinds of sound-absorbing materials, and it can also be painted directly to act as a finishing material to use, and at the same time, it is enough to make a good effect of industrial style.
Therefore, in recent years, it is also applied to various kinds of restaurants, offices, displays and other spaces in a large area.
b、When the finish material has fireproof, moisture-proof, wear-resistant, or needs cement mortar plastering requirements, cement board will be used as the base plate.
Such as: bathroom steel frame partition wall, kitchen steel frame partition wall, basement partition wall, ultra-thin partition wall tile finish and other cases.
As a regular thickness of the base plate, cement board or calcium silicate board, in terms of construction practices, and other wood, gypsum board does not have any difference, are used to nail the form of fixed.
The only difference is that when fixing calcium silicate board on the steel frame wall, it is recommended to use dovetail screws.
Cement board thickness less than 10mm, and as a veneer panel material, you can also consider gluing to install.
Of course, this way is only for the regular thickness of cement board, if the thickness of cement board is more than 20mm, it must use the form of dry hanging to fix.
However, the use of cement board in the interior of more than 20mm is quite rare, so little that the designer mentioned cement board think of is to play self-tapping screws to fix.
5、Lastly to say that the glass magnesium plate
a, glass magnesium plate, small name magnesium oxide plate, is a new non-combustible decorative material made of light material as filler compound.
The biggest feature is fire and moisture, odorless and non-toxic, super high strength, light weight and so on.
b, magnesium glass board is mainly used as ordinary fireproof board, fireproof decorative board, fireproof door core board and so on in order to apply. Translated with www.DeepL.com/Translator (free version)