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A1 non-combustible MOS board
Magply

A1 Non-Combustible MOS Board

A magnesium oxysulfate board engineered for fire mitigation and high-performance sheathing. A1 non-combustible, low chloride, dimensionally stable, specified across SFS, timber frame, modular, roofing and rainscreen build-ups across the UK.

Available thicknesses

  • 6mm
  • 9mm
  • 12mm
  • 18mm
  • 20mm
  • Fire classification Euroclass A1 (EN 13501-1)
  • Certified standard Tested to BSI PAS 670 / 2021
  • Approval rating ETA 17/0976 and Class 0
  • Workability Strong and Easy to Use
  • Sustainable choice Environmentally Friendly
  • Airflow Breathable
  • Protection Moisture & Mould resistance
  • Acoustic Performance Sound Reduction
About Magply

The fire-rated MOS board specifiers actually trust.

Magply is an A1 non-combustible MOS board designed for fire mitigation and high-performance sheathing applications. Manufactured using a magnesium oxysulfate formulation, Magply is engineered to provide improved stability and durability compared to traditional magnesium oxide boards.

As an A1 non-combustible board, Magply is suitable for use across timber frame and steel frame construction, modular and offsite build, rainscreen cladding, render systems, roofing systems, spandrel panels, SIP panels and pattressing. Its low chloride content supports long-term performance within wall, ceiling, roof & façade build-ups.

Magply has been tested in a wide range of fire-rated assemblies and achieves a Euroclass A1 reaction to fire classification. It is intended to be used as part of a designed system, fixed to suitable framing and covered by appropriate finishes in line with the overall construction requirements.

Where it's used

14 applications across UK construction.

  • Timber frame
  • Façades & external sheathing
  • Render carrier board
  • Roofing
  • Modular & offsite construction
  • Steel frame systems (SFS)
  • Pattressing
  • Dormer cheeks
  • Rainscreen cladding
  • Recovery and overlay board
  • Log burners & fireplaces
  • SIP panels
  • Soffits & eaves lining
  • Spandrel panels
Technical properties

The numbers behind the board.

Tested to BS and EN standards. Full datasheets and certifications are available in the document library.

Fire classification Euroclass A1 BS EN 13501
Reaction to fire Passed BS EN 1716
Vapour resistance 0.31 MNs/g EN ISO 12572
Appearance Solid flat sheet board White · Odourless
Melting point 2400°C No melt or drip behaviour
Solubility Insoluble in water Stable in service
Literature

Brochures, Datasheets & Certificates.

Ancillary products

Everything you need to install with confidence.

Category
FAQs

Common questions about Magply

Can’t find what you’re looking for? Our technical team is happy to help.

What is Magply? 
A magnesium oxysulfate (MOS) board designed for fire protection and related sheathing build-ups.
What is the fire classification for Magply? 
Euroclass A1 non combustible / Class 0.
What thicknesses are available for Magply? 
6mm, 9mm, 12mm, 18mm and 20mm.
Where is Magply typically used? 
Timber frame, steel frame, rainscreen cladding, render systems, modular build, spandrel panels, SIP panels and pattressing.
How should Magply be cut?
Magply can be scored & snapped with a utility knife, or with recommended tools such as a skillsaw
Technical Help

Stuck on a specification or details? Talk to our team.

Spec advice, system reviews, fire and acoustic queries — direct from the team that knows the products and the standards inside out.

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