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20mm Marmox Fireboard - A1-Rated Fireproof Insulation Board - 1200mm x 600mm

20mm Marmox Fireboard - A1-Rated Fireproof Insulation Board - 1200mm x 600mm
20mm Marmox Fireboard - A1-Rated Fireproof Insulation Board - 1200mm x 600mm
20mm Marmox Fireboard - A1-Rated Fireproof Insulation Board - 1200mm x 600mm
20mm Marmox Fireboard - A1-Rated Fireproof Insulation Board - 1200mm x 600mm
20mm Marmox Fireboard - A1-Rated Fireproof Insulation Board - 1200mm x 600mm
Price: £18.42 (£22.10 inc VAT)
  • Product Code: A1-6591
  • Delivery Time: 1-3 working days
  • Brand: Marmox
  • (Tech. support: : 01634835290)
  • Model and Size: 1200mm x 600mm - 0.72m2
  • Weight: 2.16kg
Our ratings on 07-10-2025:
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20mm Marmox Fireboard - A1-Rated Fireproof Insulation Board - 1200mm x 600mm

Length: 1200mm
Width: 600mm
Thickness: 20mm
Panel Coverage: 0.72m2
Density: 150kg/m3
Weight/m2: 3kg
Weight: 2.16kg
Thermal Conductivity: 0.037W/mK
R-Value: 0.6m2K/W
Fire Rating (Reaction to Fire): A1(Non-combustible)

20mm Marmox Fireboard is a lightweight, A1-rated non-combustible insulation board that combines fire protection, thermal insulation, and acoustic performance in one render-ready panel. It’s suitable for internal and external walls and ceilings, especially in high-risk or multi-storey buildings.

CHARACTERISTICS

  • Non-combustible insulation and render board
  • Core Material: Marmox mineral stone wool
  • Surface Finish: Polymer-modified cement coating with embedded fibreglass mesh
  • A1 fire-rated for maximum protection in high-risk zones
  • Weatherproof and moisture-resistant – suitable for wet environments
  • Excellent acoustic insulation – reduces airborne sound transmission
  • High thermal performance – helps prevent heat loss and condensation
  • Render-ready surface – no pre-treatment required before plastering or rendering
  • Lightweight and easy to cut – install with standard hand tools
  • Compatible with Marmox washers and MSP360 adhesive

APPLICATION

  • Fireproof lining for internal walls and ceilings
  • External wall insulation (EWI) systems, including elevations over 18m
  • Safe substrate for render finishes in multi-storey buildings
  • Fire protection for SIPs panels, timber, masonry, and steel frames
  • Acoustic insulation in residential and commercial settings

INSTALLATION

  • Boards can be fixed directly to timber battens, masonry, or steel frames.
  • Use Marmox mesh tape over joints and fix with washers at 300mm centres (600mm for thicker boards).
  • Finish with plaster or render as required.

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