SHERA board – a fibre cement board with high impact strength and moisture and fire resistant properties

SHERA board is the perfect choice for building board applications such as wall cladding, wall partitioning and decorative walling. The types of buildings that are suitable for SHERA board applications are residential, commercial and industrial buildings as well as schools and hospitals; especially where speedy construction, cleanliness and hygiene is of high importance.

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Benefits of SHERA Fibre Cement Board:

High quality fiber cement building boards from SHERA
SHERA fibre cement boards

- Weather resistant

- Immune to water damage
- Fire resistant
- Provides sound insulation
- Shatter resistant
- Low shrinkage
- Flexible
- High degree of workability
- Termite resistant

Matching the Demands of Modern Applications

SHERA Board is a non-asbestos fibre-cement product composed of Portland cement, cellulose fibre and refined sand.


Using a special manufacturing process called autoclave, SHERA board acquires the strength, durability of cement and easy workability of wood as well as dimensional stability.


A non-combustible multi-purpose application fibre-cement flat board, SHERA Board comes with various thicknesses which are suitable for various applications; ceiling, wall, and floor.


It can be used for both exterior and interior applications. SHERA Boards can perfectly be calibrated and then laminated or coated with other materials, such as eg. wood veneer.

Standard References

 Standard Category Title
 ATSMC1185, C1186-99FlatNon-Asbestos Fibre-Cement sheets
 ATSME90 – 97Sound Transmission Lost of Building Partition
ISO 8336: 1993Fibre-Cement Flat sheets
 AS/NZS2908.2: 2000Cellulose Cement Product Part2: Flat sheets
JIS A5430 – 1995Fibre Reinforced Cement Boards
 TIS1427 – 2540Fibre-Cement Flat sheets
 EC Conformity 12476:2004 Fibre-Cement Flat sheets

Building Material Class

SHERABoards are 'non-combustible' and correspond to materials in building material class A2-s1, d0 (s1 = no smoke, d0 = no combustible drips), in accordance with EN13501-1.

Applications

 Size (mm)Thickness (mm)  Weight (KG)Edge Profile Application 
1200 x 2400
1220 x 2440
 4 18.00
18.61
Square-cut edge Internal cladding
 1200 x 2400
1220 x 2440
 6 27.00
27.91
 Square-cut edge/
Recessed edge
 Internal/external ceiling

1200 x 2400

1220 x 2440
 8 36.00
37.21
 Square-cut edge/
Recessed edge
 Internal partition

External wall cladding

Wet area and tile backing

Floor underlay
 1200 x 2400
1220 x 2440
 9,10 40.50
41.86
45.00
46.51
Square-cut edgeExternal wall cladding
Wet area and tile backing
Floor underlay
 1200 x 2400
1220 x 2440
 12 54.00
55.82
 Square-cut edge/
Recessed edge
External wall cladding

Wet area and tile backing

Floor underlay

 1200 x 2400
1220 x 2440
 15 66.27
68.50
Square-cut edgeInternal partitions with special requirements
Elevated Floor
1200 x 2400
1220 x 2440
 18 79.52
82.20
Square-cut edgeInternal partitions with special requirements
Elevated Floor
1200 x 2400
1220 x 2440
 20 88.36
91.33
Square-cut edgeInternal partitions with special requirements
Elevated Floor

Installation

Tools: 

No special tools are required. The products can be used with normal nails, fastened by normal or self-drilling screws and cut by an electric power saw with a diamond blade. 


Fixing: 

SHERA Board can be fixed to both timber (minimum size 1.5 x 3 inches) or steel frames (at least 0.55 mm thickness). The board must be supported at the edge at intermediate positions with centers not exceeding 600 mm. Screws must be located more than 12 mm from edges and 50 mm from board corners. 


Fastener: 

Fasteners can be both nails and screws. It can be nailed directly to timber supports with round wire nails. For metal screws, the size and length of the screw depends on the thickness of the board and the gauge of framing. Pre-drilling the board is a must unless self-embedding, self-drilling head screws such as SHERA Fix-W32 (for fixing 8 – 12 mm board to steel frame), SHERA Fix-B20 (for fixing 4 – 6 mm board to galvanized steel frame) and SHERA Fix –W45G8 (for fixing 15 – 20 mm board to steel frame) are used. 


Jointing: 

Since fibre-cement board is subject to slight dimensional changes, a butt joint can be used in dry partitioning areas or where an exposed joint appearance is acceptable. For better water protection, either flexible acrylic or polyurethane based sealant can be used to seal gaps of 3-5mm.

Flush Joint for SHERA Board, Recessed Edge

SHERA fibre cement boards flush jointing provide a seamless joint for interior and exterior building boards
SHERA board flush joint

First coat: Fill the recessed area to the face of the sheet by using a jointing compound then embed the fibreglass mesh tape into the joint. 


Second coat: Apply second coat at 200 mm width. Allow it to dry thoroughly before applying a finishing coat. 


 Finishing coat: Apply third coat at 300 mm width. Allow it to dry completely before sanding.

Recommended Frame Specification – For Internal Partition

Galvanized steel frame No.24 (0.55 BMT) is recommended to be used as stud for internal partition using SHERA Board. Stud shall be fixed at the spacing of 600 x 2.400 mm. Details of ideal stud size are shown as follows.

SHERA boards offer rapid installation and can be fixed to a variety of building frames
SHERA boards can be attached to steel frames
 
SHERA fibre cement boards recessed edge
Recessed Edge
 
SHERA fibre cement boards, square cut edge
Square Edge
 
C 0.55 x 50 x 38 x 3000 mm
 
U 0.55 x 52 x 38 x 3000 mm

Technical Data

 Physical Properties
 Thickness Tolerance+ 6%
 Density1300 +  50 kg/m3
 Modulus of Rupture> 7 MPa (Wet)
 Modulus of Elasticity5500 + 50 MPa (Wet)
 Water Absorption< 35%
 Moisture Content< 12%
 Water TightnessPass
 PH Value7-8
 Thermal Conductivity0.15 W/m.K 
 Acoustic InsulationSTC = 30 dB (6 mm single board)
STC = 50 - 60 dB (10 mm composite wall)
 Moisture Movement

+ 0.4%

Fire Resistance Properties
 IgnitibilityPass
 Fire Propagaton IndexI = 0.1
 Surface Spread of FlameClass 1 
Reaction to Fire ClassificationA2 - s1 d0
Durability Properties
 Freeze / Thaw ResistancePass
 Warm Water Resistance Pass
 Heat / Rain Resistance Pass
 Soak / Dry Resistance Pass

Transportation, Handling and Storage

Transportation, Handing and Storage: 

Deliver SHERA Board to the project site in the original, unopened package and store them in fully enclosed space where they will be protected against damage from humidity, direct sunlight, surface contamination and other causes of damage. Handle SHERA Board carefully to avoid chipping the edges or damaging units in any way. Handling and storage practices should follow the manufacturer’s recommended suggestions at all times.

 
SHERA boards should be stacked as per instructions

Stack boards on a pallet.


Cover with a tarpaulin or other waterproof sheeting.

 
Handle SHERA FC building boards as per instructions

Carry the boards as shown in order to avoid damage/breakage or injury.

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