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 FireproofNon-flammability meet class A to ASTM E 84.
Moisture resistantWill not mildew and soften in wet condition.
Termite resistantIt is made of natural mineral, 100% termite resistant.
Superior strengthBending strength 12mm < 25 Mpa ,Screw holding< 75N/mm.
Chloride free20 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

ParameterResultTest Standard
Density<1200kg/m3BS EN 12467 -2012
Bending strength12mm< 25-30MpaBS EN 12467 -2012
Water absorbing by weight/24 hours< 20%BS EN 12467 -2012
Water impermeability  after 24h, water gauge 5 cmLack of leakageBS 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
DurabilityABS EN 12467 -2012
Fire ResistantA1   weight lose<30%EN ISO1182 &1176
Material saftyNone of harmful substanceEN REACH
Surface burning and smokeClass A  Flame Spread<25
Smoke Develop<25
ASTM E 84-12

ROCKMAX Structural Mgo Sheathing Application

ApplicationFire resistant mgo SIPUnload & load bearing CFS wall
Installed wall systemModular construction
AccessorySelf drilling screwSelf adhesive mesh tape
ScraperMortar or adhesive
Flexible jointing compoundWall wrap -DuPont Tyvek
LimitationApplication tempreture < 70’cCan’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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