Roof Sheathing MGO Board

 

Roof Sheathing MGO Board (also known as Magnesium Oxide Roof Board / MGO Roof Deck Board)is a high-performance, non-combustible structural board designed specifically for roof sheathing, roof decking, underlayment, and structural roof substrates.

Made from magnesium oxide, magnesium salt, reinforced fiber, and inorganic fillers, it is pressed and cured under high temperature to form a rigid, stable, and long-lasting panel. It is widely used to replace plywood, OSB, gypsum board, and other traditional roof sheathing materials in steel structure buildings, prefab houses, commercial roofs, and fire‑safe construction projects.

 

About Fire Rated Roof Sheathing

 

Key Features

① Class A1 Non‑Combustible

• Highest fire resistance rating: A1 non‑combustible
• No smoke, no dripping, no flame spread
• Ideal for commercial, industrial, and public building roofs

② High Structural Strength & Load Capacity

• High flexural strength, strong nail holding
• Stable under wind load, snow load, and foot traffic
• Suitable for roof structural substrate and decking

③ Excellent Moisture & Weather Resistance

• Water‑resistant, no expansion, no delamination
• Anti‑mold, anti‑termite, anti‑corrosion
• No halogen return, no efflorescence (high‑grade MOS formula)

④ Lightweight & Easy Installation

• Standard size for fast construction
• Can be cut, drilled, and fixed with screws
• Compatible with steel purlins, wood frames, and roof trusses

⑤ Eco‑Friendly & Safe

• No asbestos
• No formaldehyde
• Non‑toxic, odorless, green building material

 

Fire Rated Roof Sheathing Application Scenarios

 

Recommended Thickness for Roof Sheathing

• Light roof / non‑loading: 8mm – 10mm
• Standard residential / light commercial roof: 12mm (most popular)
• Heavy load / long span / photovoltaic roof: 15mm – 20mm

Main Applications

• Steel structure roof sheathing & decking
• Prefab house, villa, and light steel house roof substrate
• Commercial building roof underlayment
• Fireproof roof deck for warehouses, workshops, and public buildings
• Roof insulation system board
• Replacement for OSB, plywood, and gypsum roof boards

 

Fire Rated Roof Sheathing Features and Advantages

Advantages Over Traditional Roof Sheathing

Fireproof: MGO = A1 non‑combustible | Plywood/OSB = flammable

Waterproof: MGO = stable in humidity | Wood = rots, swells, molds

Durability: MGO lasts 30+ years | Wood 10–15 years

Anti‑corrosion: Does not corrode steel structure | No risk

Structural stability: No deformation, no warping

 

 

About The Factory：

Roof Sheathing MGO Board

FAQ:

1.What is your packaging?

Plywood / solid wood pallet.

2.What is your payment term?

We arrange the production upon receiving your deposit by T/T.

 

Packing and Shipping:

Packaging and Shipping Of Roof Sheathing MGO Board

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