Magnesium Cement Sheathing Board
ROCKMAX magnesium cement sheathing board is pure inorganic building board that formulated with magnesium oxide cement and mineral aggregate. It is dimensional stable with super low water absorption, the durability has been tested to EN 12467(cement board standard). Highly recommend it for ETICS, decorative veneer backer board, exterior paint wall etc.
| A1 Fireproof | Will not release toxic gas when it is burning |
| High Strength | Bending strength 12mm > 16 Mpa |
| Durable | Tested to BS EN 12467 category A for exterior sheathing |
| Dimension stable | Dimension changes <0.2% in exterior wall |
| Low water absorption | Water absorption is lower than fiber cement board |
| Cut easily | Score and snap cut by utility knife |
| Material Safety meet EN REACH requirement, exclude 191 kind of harmful substance | |
Fire Resistance
Mold Resistance
Flexible
Easy cut and work with
Impact Resistance
Heat Resistance
Durable
Building Safe
Moisture Resistance
Insect Resistance
Recyclable
Health Safe
Magnesium Cement Sheathing Board Technical Data Sheet
| Parameter | Result | Test Standard |
| Density | >1050kg/m3 | BS EN 12467 -2012 |
| Bending strength | 12mm> 16 Mpa | BS EN 12467 -2012 |
| Water absorbing by weight/24 hours | < 10% | BS EN 12467 -2012 |
| Water impermeability after 24h, water gauge 5 cm | Lack of leakage | BS EN 12467 -2012 |
| Shrinkage and expansion rate(outdoor) | <0.2% | ASTM C 1186-08 |
| Thermal conductivity | <0.22W/(m·K) | ASTM C 518-10 |
| Asbestos or formaldehyde | None | EN REACH |
| Fire Resistant | A1 | EN ISO1182 &1176 |
| Chloride content | <0.1% | ASTM C 871 |
| Wet – dry 50 cycles Heat rain 50 cycles Freeze-Thaw 100 cycles | Strength remain>75% | EN 12467 Category A Class 3 |
| Surface burning and smoke | Class A Flame Spread<25 Smoke Develop<25 | ASTM E 84-12 |
Magnesium Cement Sheathing Board Applications:
| Application | EIF & Stucco board | ETICS backer board |
| Exterior backer board for brick veneer | Exterior backer board for curtain wall | |
| Exterior backer board for aluminum composite panel | Exterior backer board for tile | |
| Exterior fire resistant envelop system | ||
| Accessory(exterior wall) | Steel frame or wood frame | Self drilling screw |
| Self adhesive mesh tape | Flexible jointing compound(Sika,Knauf grey) | |
| Drained cavity batten,wall warp | Insulation, mortar, mesh net, waterproof primer | |
| Limitation | Can not use as exterior cladding | Thickness no less than 9mm |
| Can not serve extreme high temperature >70’c | ||
Magnesium Cement Sheathing Board Loading Capacity
Size | Weight-KG/Piece | Quantity 1 x Pallet | Loading capacity in 20’ft CNT | Bulk Load In 20’ft CNT |
12mm x 1220 x 2440 | 39.0 | 67 pieces | 550 pieces | 650 pieces |
12mm x 1220 x 2750 | 43.5 | 67 pieces | 540 pieces | 600 pieces |
12mm x 1220 x 3050 | 48.0 | 65 pieces | 520 pieces | 600 pieces |
● Other thickness and dimension can be customized