Magnesium Oxide, MgO, Board

High Performance | Low Cost | Long Lasting | Chloride Free

Get good quality magnesium oxide, MgO board for fire protection, building construction, partition, wall, fire door core at low price Wedge India. WEMAG-S 1000 is a Chloride free Magnesium Sulphate MgO Board. It is a perfect green building product and environmentally friendly board.


The board is made of high purity magnesite (magnesium oxide), magnesium sulphate, wood fiber, and water repellent perlite. WEMAG-S 1000 is fire resistant, corrosion resistant, non-flammable water resistant board most suitable for ceilings, wall, partitions, and decorative applications.

Main Features & Benefits

  • Without chloride elements

  • Solve the problems of light corrosion and expansion

  • Fireproof, waterproof, shockproof, tasteless, non-toxic

  • Does not rot, does not crack, deformable

  • Non-combustible, high strength, light weight,

  • Convenient construction, long service life

  • Fire-resistant (UL 055 and ASTM-tested and A-rated)

  • Water-resistant (freeze/thaw-tested for 36 months)

  • Mold / fungus / bug free (non-nutritious to mold, fungus, insects ASTM G-21)

  • Impact-resistant (ASTM D-5628)

  • NYC approved (MEA # 359-02-M)

  • Silica / asbestos free

  • STC-rated 53-54


  • For Internal Wall, Partition & Ceiling

  • The Decorative applications

  • The Sub-roof board

  • The Underlay board for Floor and Wall tile

  • Non combustible furniture, doors

  • HVAC, Spandrel walls

  • Penetration seals of fire stopping

  • The Decorative applications

  • The Sub-roof board

  • The Underlay board for Floor and Wall tile

  • Raised floor, cubicles, interior sheathing, cabinets

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Download Technical Details

Wedge Magnesium Oxide MgO Boards

Modern Housing

What is MgO Board?

MgO Boards are Multipurpose dry Construction material used for cladding, partition, ceilings, flooring, fire protection, water Proofing, roof Construction, heat insulation, and acoustic insulation. MgO Boards are manufactured with Magnesia. Magnesium oxide (burnt magnesium) is produced by the thermal decomposition of magnesium carbonate MgCO3. High melting points as well as chemical inertness and thermal stability determine the preferred use of magnesia in the manufacture of refractory materials used in the high temperature processes of steel, cement, lime, glass and non-ferrous metals. The world's largest consumer of magnesium is the refractory industry. The metallurgical industry
needed high-quality refractory materials that can withstand molten metal. The magnesite has become one of such refractory natural materials because its main quality parameter is high heat resistance.

Magnesium oxide board (MgO board) is a large format construction boardin white color. MgO board is making from environmentally friendly natural material that is safe for health and does not release toxic substances when used. Important features of the magnesite board are that it is fire resistance, elastic and solid, frost-resistant, waterproof, ecological, antiallergic, heat-reflective, healthy, resistant to mold and rodent.


A unique feature of the magnesium oxide board is that the board actively consumes CO2 from the air throughout its life cycle, thereby continuously cleaning it and improving the quality of the indoor environment. The magnesium plate can be used practically everywhere. This product is used for ceilings, partitions, fireplaces, all types of interior and exterior wall cladding, ventilated facades, creative ceilings and wherever a building needs to be protected from fire, rot and mold. They can be easily tiled, plastered or painted.

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How good Quality MgO Boards are manufactured?

We at Wedge Offer mainly two different types of grades of MgO board. One is MgO board with Chloride: magnesium oxide, magnesium chloride (MgCl2), wood fiber, fiberglass mesh and additives. One is Sulfate MgO Board: magnesium oxide, magnesium sulfate (MgSO4), wood fiber, fiberglass mesh and additives. The magnesium chloride is easy to absorb the moisture from ambient and lead to quality issues. Now the sulfate MgO board is becoming the first choice for most customers, like in the USA, Canada, Europe, Australia and so on.

Various types of MgO boards have different ratios of base raw materials and purity which results in some different properties. Magnesium oxide board is made of mixture of magnesium oxide, provided with additional elements. Wedge MgO (Magnesium oxide board) is made of high purity magnesium oxide, MGO sulfate (MgSO4), replace of magnesium chloride (MgCl2), high strength fiber glass mesh, perlite, and non-woven fabrics. MgO board consists of 67% MgO, 18% SiO2, 5% Filler, 9% additives and 1% Fiberglass gauze and it vary according to cost and performance requirements from the end users commercial grades of MgO boards are with different structure 50% MgO, 25% MgCl, 15% Cement-based sealants, 8% SiO, 1% Fiberglass gauze, 1% others.


  1. Standard size: 1220x2440, 1220x3050mm

  2. Standard thickness: 3 mm to 20 mm

  3. Color: nature color is white, also could make green, grey, brown.

  4. Edge: Square, tapered, shiplap, T&G

  5. Backside: Rough or sanded.

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What are Advantages of MgO Boards?

Magnesium oxide boards offer replacements for gypsum-based panels, drywall, and other construction boards and panels. They are environmentally benign and boast a host of characteristics beneficial to the safety and health of homeowners and contractors. Magnesium oxide board has many attractive qualities. As highlighted earlier, it has excellent fireproof qualities, is energy efficient to produce, reduces waste, and captures carbon dioxide during production. Beyond that, the boards’ fungus resistance means they attract no rot, mildew, allergens, or mold. It’s 20 to 30 percent lighter than other cement-based boards. Contractors and DIYers find it easy to use because of its lightweight.

  • Can be used in the place of traditional drywall or cement boards. No special tools required.

  • Hard non-absorbent surface – using fibreglass backing – with no paper.

  • Can be used in applications like cement-based siding subject to using water-proof coating systems.

  • Energy efficient – magnesite calcines at approx. 780 Celsius, compared to over 1,400 Celsius required to form traditional Portland cement or calcium oxide, the starting material for the preparation of slaked lime used in common mortar and plaster.

  • Magnesia boards have been mentioned in articles about biologically friendly construction and risks of mold infection.

  • Comparable in cost to cement board made from Portland cement, with numerous advantages over that material for wet applications.

Excellent Fire resistance

The material is resistant to temperatures of 800 ° C and can withstand the effects of an open flame for up to 240 minutes when it is part of prefabricated structures. The MgO board is a noncombustible material, achieves zero smoke/flame spread. You could find many videos on the internet to show the fireproof performance of the MgO board. 

High Resistant to moisture

It does not deform, softens and rot under the influence of moisture or steam. Due to varying climates, disaster, and flooding mold and mildew is a common issue homeowners face. MgO is resistant to mold or mildew and does not feed mildew or mold as it contains no organic materials.

Good Frost resistance

The material can withstand more than 50 freeze-thaw cycles, which does not destroy it.

High Strength

It has good impact resistance and increased strength. Material resistant to impacts greater than 5 KJ / m2. The flexural strength is from 15 MPa to 22 MPa. Impact, shearing and overall strength of the best existing products are strong enough to pass the strictest impact, seismic and wind code in different countries. We also done a strength test in our factory.

Good Acoustic Insulation and Soundproofing

The material has good sound absorption and provides high sound insulation. Noise protection board 8 mm - 29 dB.

High Thermal insulation

It has low thermal conductivity properties - the thermal conductivity coefficient is 0.216 W / mK.

Constant dimensional stability

It is not affected by moisture, heat or cold. The MgO board is made of nature materials, the production process won’t creat any pollution. It also could help to creat a healthy living environment.


Magnesium oxide, more commonly called magnesia, is a versatile mineral that when used as part of a cement mixture and cast into thin cement panels under proper curing procedures and practices can be used in residential and commercial building construction. Some versions are suitable for a wide range of general building uses and for applications that require fire resistance, mold and mildew control, as well as sound control applications and many other benefits. As an environmentally friendly building material, magnesia board has strength and resistance due to very strong bonds between magnesium and oxygen atoms that form magnesium oxide crystals (with the chemical formula MgO).

Magnesia boards are used in place of traditional gypsum drywall as wall and ceiling covering material and sheathing. It is also used in a number of other construction applications such as fascias, soffit, shaft-liner and area separation, wall sheathing, and as tile backing (backer board) or as substrates for coatings and insulated systems such as finish systems, EIFS, and some types of stucco. 

House Construction

History of Uses of MgO Boards

Magnesia is widely used primarily as wallboard alternative to conventional gypsum-based drywall and plywoods. The magnesia boards can be scored and snapped, sawed, drilled, and fastened to wood or steel framing. Magnesia boards are a good example of the advances made in construction materials to meet changes in building codes for safety and durability. 

Magnesia cement uses in masonry construction is ancient. It was used primarily as a mortar component and stabilizer for soil bricks. Magnesia has also been identified in the Great Wall of China and other ancient landmarks. Roman cement is reported to have contained high levels of magnesia. In the West, Portland cement replaced magnesia for masonry uses in the 20th century when energy was cheap (see energy efficiency) and mold infection was poorly understood. However, some projects continued to use magnesia.

Due to its fire resistance and safety ratings, New York and New Jersey were early adopters of magnesia cement board. Florida has adopted magnesia boards for mold/mildew resistance. It is hurricane and impact tested and approved in Miami-Dade County. Located in Taipei, Taiwan, magnesia board can be found on all 101 stories of Taipei 101, currently the eighth tallest building in the world. Magnesia sheeting was used on the inside and outside of all the walls, fireproofing beams and as the sub-floor sheathing.