Magnesium oxide boards - new generation building material

XLHJ Group Limited offers supplies of magnesium oxide boards - a great alternative to OSB, plywood, gypsum board, and tile backer board.

Magnesium oxide board «MgO board» is a factory-made, non-insulating sheathing board product. It can be used for a number of applications including wall and ceiling linings, fascias, soffits, tile backing and underlayments. It is made of magnesium oxide, a type of mineral cement, and is commonly called simply «MgO» (pronounced emm-gee-oh) due to its chemical composition of magnesium (chemical symbol Mg) and oxygen (chemical symbol O). Think of MgO as a type of sheathing board-sort of like drywall or cement board - but with much-improved characteristics such as fire resistance, weatherability, strength, resistance to mold and mildew, and so on.

MgO is available in many forms, and for building construction comes in various thicknesses and sheet sizes. It also comes in various grades, such as smooth finishes, rough textures, and utility grades. It is white, beige or light gray in color, and has a «hard» sound when rapped with your knuckles-somewhat like portland cement board.

Like any sheathing board, MgO board can absorb water but its performance is unaffected. Thus it can be used indoors and outdoors, and in damp locations, such as showers. Like portland cement based sidings, if MgO is used outdoors in an exposed location, it needs some form of coating, such as paint. MgO can be used structurally-as in bracing for walls-and also semi-structurally, such as an underlayment for flooring.

Magnesium oxide board structure

MgO board consists of 5 layers:
1 - Facial surface layer.
2 - Fiberglass net reinforcing layer, which makes the board durable and stable
3 - Filler layer (includes magnesium cementing agent, perlite and wood chips)
4 - Second fiberglass net reinforcing layer.
5 - Filler layer of the inner side.

MgO board composition

Magnesium oxide board consists of:

• magnesium oxide [MgO] (40%) 
• magnesium chloride [MgCl2] (35%)
• wood chips (15%)
• perlite [SiO2] (5%) (volcanic glass)
• small  glass cloth (1%)
• linking composite materials (4%)

Lighter than cement board, smoother than drywall, more flexible than cement board, more rigid than drywall, much more inert than either cement board, drywall or wood based board materials.

MAGNESIUM OXIDE BOARD RESISTS:

• Salt (sodium chloride) Brines and Salt Water
  
• Chlorine Bleach (sodium hypochlorite) & Related Pool Chemicals
  
• Ammonia (ammonium hydroxide) & Related Chemicals
  
• Exposure to Water and Moisture & Freeze thaw cycles
  
• Changes in Temperature up to  800 °C
  
• Repeated Wetting and Drying or Freezing and Thawing
  
• Swelling, Losing  Strength or Deterioration
  
• Moulds, Mildew, Bacteria, Fungus, Termites, Rodents and other Organisms
  
• Fireproof
  
• Impact Damage

MAGNESIUM OXIDE BOARD IS:

• Non-combustible Class A Building Material - 20 MPa
• Breathable and porous for strong coating and adhesive bond
• Ideal for basements, garages, washrooms, wet pool areas and laundry rooms
• For ALL Residential, Commercial, Industrial and Institutional Construction
• Perfect for adding fireproofing to wood frame construction and elsewhere
• Excellent acoustic dampening material with higher density and elasticity
• Refractory material for infrared radiation (heat) assisting to reduce loss of energy when heating or cooling by reducing conductivity
• Non-hazardous, natural, non-toxic and disposable as crushable clean fill
• Environmentally friendly and produced without wasting large amounts of fossil fuel or releasing significant CO2 into the atmosphere in production
• Available in Chalk White and Slate Grey, custom colours and pre-cut sizes
• Stronger and more rigid to allow thinner material to do the same job
• Easier to work with using all types of hand tools and wood working equipment but also can be cut with a quick score and snap faster than drywall

Magnesium oxide board physical characteristics comparison

Premium and Optima: two grades of quality

 *  Shipping by railway waggon (carrying capacity 60 t) is preferable.

* Shipping by 20 feet containers is preferable.

Some differencies between Premium and Optima boards

• Surface of the Premium MgO board smoother and harder, than the Optima's one
• Density and waterproofness of the Premium board is higher
• Premium board is more durable, it's more difficult to break

PREMIUM MgO boards are mainly used when higher durability is necessary, at so-called load-carrying areas, for example, floors or permanent shutterings. PREMIUM MgO boards can also be used for facades exterior finishing.

OPTIMA MgO boards are primarily used for walls aligning (recommended thicknes 6-8 mm), partitions installation (8-10 mm), ceilings finishing (6 mm), window slopes finishing (6 mm), but it can be also used for flooring (recommended thickness 10-12 mm or two layers of 8 mm board). PREMIUM MgO boards can be easily used for external work too,  subject to the processing of grounding and special facade paintings.  None additional treatment is not required for sheathing sidings or panel over MgO boards.