A1 non-combustible, MgO board
RCM Extremegreen MgO magnesium oxide board is a high density structurally reinforced magnesium oxide based sheathing consisting of a proprietary composition of magnesium oxide (MgO) and magnesium chloride (MgCl2) that is reinforced with multiple layers of glass fiber mesh. Magnesium oxide is a mineral based raw material.
The sheets are made in various lengths, widths and thicknesses providing a huge range of building options.
As an A1 non-combustible sheathing board Extremegreen is an excellent choice for structural timber applications.
- Fire rated to EN 13501-1 class A1
- Water resistant
- Environmentally friendly
- Mould resistant
- Contractor friendly
- Gypsum and crystalline silica free
- Easy to work with
- Integrates with other RCM products
Standard Board Sizes
- 2400 x 1200mm (6mm, 9mm and 12mm)
- 2397 x 1198mm (9mm)
- 2697 x 1198mm (9mm)
- Other board sizes are available.
RCM Extremegreen can be cut, drilled and nailed using conventional hand tools; offering many of the properties of timber.
For cutting the product in any volume, we recommend the use of a hand held circular saw with a 60+ tooth finish blade. Alternatively, RCM offer a complete fabrication service, please contact our technical department for details.
- Sheathing board
- Ceilings and roofing
- Internal wall lining
- Tile backer board
- Buildings above 18m
- Flooring and sub-flooring
Suitable for the following construction types
Modular / Offsite