Extremegreen

  • Overview
  • Technical Data
  • Downloads

Overview

A1 non-combustible, MgO board

RCM Extremegreen MgO board is a high density structurally reinforced magnesium oxide based sheathing board consisting of a proprietary composition of magnesium oxide 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.

Features

  • Fire rated to EN 13501-1 class A1
  • Can be scribed and snapped up to 12mm
  • 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.

Samples

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Workability

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.

Key applications

  • Sheathing board
  • Ceilings and roofing
  • Internal wall lining
  • Tile backer board
  • Buildings above 18m
  • Flooring and sub-flooring

Suitable for the following construction types

  • Timber Frame
  • Modular / Offsite

Technical Data

  • 931 kg/m3
    • Parallel
      16.15 N/mm2
    • Perpendicular
      22.77 N/mm2
    • Parallel
      6496 N/mm2
    • Perpendicular
      6827 N/mm2
  • R2 per inch
  • 11.36%
  • BS EN 13501-1 Class A1 Non-Combustible
  • Highly Resistant
  • Front Face - Smooth
  • Back Face - Textured
  • 25 years
  • 2400 x 1200mm
  • 2697 x 1198mm
  • 6 9 12
  • 7.16 10.09 13.45
    • Length
      ±1.2mm
    • Width
      ±1.2mm
    • Thickness
      ±0.2mm
    • Fire Reaction Tests
      BS EN 13501-1 Class A1 Non-Combustible
    • BS EN ISO 1716:2010
    • BS EN ISO 1182:2010
    • Physical Properties
      BS EN ISO 12467
    • BS EN 594
    • BS EN 717-3:1996
    • Timber Frame
      4.2mm x 42mm Climaseal self drilling fixing

Downloads

01
01 . 5
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