Mgo Sheathing2023-05-29T22:59:13+08:00

Structural Mgo Sheathing

ROCKMAX structural mgo sheathing, it’s made from compressed magnesium oxysulfate cement by unique formula design. ROCKMAX sheathing has great bending strength and screw holding strength as good as OSB sheathing, beside it is fireproof, waterpoof, termite resistant and 100% formaldehyde free. ROCKMAX sheathing is an innovative building board for fire rated sandwich insulation panel(Mgo Sip), LFS/LGS shear wall and offsite modular wall system.

A1 Fireproof Non-flammability meet class A to ASTM E 84.
Moisture resistant Will not mildew and soften in wet condition.
Termite resistant It is made of natural mineral, 100% termite resistant.
Superior strength Bending strength 12mm < 25 Mpa ,Screw holding< 75N/mm.
Chloride free 20 years noncorrosive warranty for steel frame system
Durability tested to BS EN 12467. Resist to heat rain, heat and wet, frost thaw, warm water.
Material safety meet EN REACH, none of harmful substance, formaldehyde and asbestos free.

Fire Resistance

Mold Resistance

Building Safe

Impact Resistance

Heat Resistance

Health Safe

Moisture Resistance

Insect Resistance

Parameter Result Test Standard
Density <1200kg/m3 BS EN 12467 -2012
Bending strength 12mm< 25-30Mpa BS EN 12467 -2012
Water absorbing by weight/24 hours < 20% BS EN 12467 -2012
Water impermeability  after 24h, water gauge 5 cm Lack of leakage BS EN 12467 -2012
Dry Shrinkage
Wet expansion
ASTM C 1186-08
Thermal conductivity <0.22W/(m·K) ASTM C 518-10
Chloride content <0.03% ASTM C 871
Durability A BS EN 12467 -2012
Fire Resistant A1   weight lose<30% EN ISO1182 &1176
Material safty None of harmful substance EN REACH
Surface burning and smoke Class A  Flame Spread<25
Smoke Develop<25
ASTM E 84-12

ROCKMAX Structural Mgo Sheathing Application

Application Fire resistant mgo SIP Unload & load bearing CFS wall
Installed wall system Modular construction
Accessory Self drilling screw Self adhesive mesh tape
Scraper Mortar or adhesive
Flexible jointing compound Wall wrap -DuPont Tyvek
Limitation Application tempreture < 70’c Can’t not stock outdoor without raincoat

ROCKMAX Structural Mgo Sheathing Loading Capacity



Quantity 1 x Pallet

Loading capacity in 20ft CNT

Bulk Load In 20ft CNT

12mm x 1200 x 2400


68 pieces

540 pieces

650 pieces

15mm x 1200 x 2400


55 pieces

440 pieces

520 pieces

● Other thickness and dimension can be customized

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