What is mgo sip problem?

//What is mgo sip problem?

What is mgo sip problem?

What is mgo sip problem?

Mgo sip are composite of 1/2 layer of magnesium oxide sheathing on both side, EPS/XPS work as core.

It is fireproof, insert proof, moisture proof, mold proof and sound proof.

However there are some home owners complaint:

1, corrosive to steel frame/metal screw, effect structural safety

2,chloride absorb moisture will damp insulation materials and wall paper

3,low impact resistant and low screw holding strength, difficult to repair once it is damaged

Please kindly note:

1,Many mgo board contains high volume of chloride >5%, do not suggest to use for steel frame system

2,Don’t use mgo board as structural component without certification and test report.

because most of chinese mgo board are design for fireproof substrate, doesn’t offer enough shear strength/load vaule.


Rockmax mgo sheathing has OSB level of strength. it has been tested and we provide 20 years non corrosive warranty.

MGO SIP 110mm

Rockmax 10mm structural mgo sheathing + EPS 90mm + Rockmax 10mm structural mgo sheathing

Vertical wooden frame: 2 x 35mm x 87mm

load bearing: 171.47kN-187.9kN  (17.1-18.7 tons) Pkr=155.9kN.

Soft & hard body impact: Passed

24 hours 100dN hung test: Passed