The 12mm Magply A1 Fire Rated Board – Your Go-To Solution for Superior Fire Protection and Versatile Construction
At Insulation Warehouse Direct, we're committed to supplying high-performance building materials that prioritize safety, durability, and ease of installation. One of our standout products is the 12mm Magply Euroclass A1 Non-Combustible Board – a premium magnesium oxide-based panel that's revolutionizing how builders and specifiers approach fire safety in modern construction.
What Exactly is 12mm Magply?
Magply is an advanced, multi-functional construction board manufactured primarily from magnesium oxide (with a unique low-chloride magnesium oxysulfate formulation). Unlike traditional plywood, OSB, or standard plasterboard, Magply delivers Euroclass A1 non-combustible performance – the highest fire rating under EN 13501-1. This means it won't contribute to fire spread, produces virtually no smoke, and offers exceptional stability even under intense heat.
Each sheet measures 1200mm x 2400mm (providing 2.88m² coverage) and weighs approximately 38kg, striking a great balance between strength and manageability on site.
Key technical highlights include:
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Fire performance: A1 non-combustible, BS 476 Parts 6 & 7 Class 0
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Thermal conductivity: 0.19 W/mK – providing useful insulation contribution
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Density: Around 1100 kg/m³
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Resistance properties: Highly resistant to moisture, frost, impact, mould, and insects
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Breathability: Low vapour resistance for healthier building envelopes
Why Choose 12mm Magply for Your Next Project?
The 12mm thickness makes this board particularly popular for applications requiring enhanced rigidity, impact strength, and robust fire separation without excessive weight.
Common uses include:
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Timber frame construction – As sheathing, sarking, or fire breaks
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Steel frame and modular builds – Load-bearing wall linings and spandrel panels
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Render carrier board – Ideal base for external renders, direct-applied systems, or cladding support
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Dry lining – High-performance internal linings where fire, sound, and moisture resistance matter
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Tile backer – Stable, non-combustible substrate in bathrooms, kitchens, and wet areas
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Passive fire protection – In rainscreen cladding, SIP panels, or pattressing
Its versatility means contractors often use it as a "one-board solution," reducing material variety and simplifying specifications. Plus, with excellent dimensional stability and low chloride content (just 0.01%), Magply avoids many of the long-term durability issues seen in some alternative boards.
Installation Tips for Best Results
Magply cuts and fixes easily with standard tools:
- Use mechanical fixings (minimum 3.5mm shank screws, at least 45mm length for 12mm boards)
- Fixings should penetrate at least 28mm into timber studs or appropriate substrates
- Joints can be taped and filled for seamless finishes
- Always follow manufacturer guidelines and project-specific fire test data for certified systems
Why Buy from Insulation Warehouse Direct?
We stock 12mm Magply in volume for fast nationwide delivery, competitive pricing, and expert advice. Whether you're a builder working on a residential timber-frame project, a contractor needing reliable render backer boards, or an architect specifying A1-rated materials for compliance, we've got you covered.
Check out our current listing: Magply A1 Fire Rated Board 1200mm x 2400mm 12mm
Upgrade your fire safety strategy without compromising on performance or practicality. Order your 12mm Magply today from Insulation Warehouse Direct – where quality insulation and fire protection meet unbeatable value.
Questions? Contact our team – we're here to help specify the right solution for your build.
Stay safe, stay insulated! Insulation Warehouse Direct Team