Fibre Cement Board- SHERA

Poonam Timbers partnered with SHERA manufacturer of Thailand which is 40 years old company for the distribution of Fibre Cement product. SHERA board is the perfect choice for building board applications such as wall cladding, wall partitioning & decorative walling. The types of buildings that are suitable for SHERA board applications are residential, commercial & industrial buildings as well as schools & hospitals; especially where speedy construction, cleanliness & hygiene is of high importance

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Detailed Description for Fibre Cement Board- SHERA

About SHERA:-

SHERA is a Fibre Cement Product manufacturer in Thailand which is a 40 years old company. All SHER products are assured with 50 years warranty and can be used for office Partitions, Cladding for elevations, mezzanine floors, ceilings, panelling, etc. All products are water proof, Borer Proof and all weather proof material.

Product Description:

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.

Benefits of SHERA Fibre Cement Board:

- Weather resistant

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

 

Applications:-

 

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.

             

 

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

   

 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.

 

Technical Data

 

 Physical Properties

 

 Thickness Tolerance

+ 6%

 Density

1300 +  50 kg/m3 

 Modulus of Rupture

> 7 MPa (Wet) 

 Modulus of Elasticity

5500 + 50 MPa (Wet)

 Water Absorption

< 35% 

 Moisture Content

< 12%

 Water Tightness

Pass

 PH Value

7-8

 Thermal Conductivity

0.15 W/m.K 

 Acoustic Insulation

 STC = 30 dB (6 mm single board)
STC = 50 - 60 dB (10 mm composite wall)

 Moisture Movement

+ 0.4%

Fire Resistance Properties

 Ignitibility

Pass

 Fire Propagaton Index

I = 0.1

 Surface Spread of Flame

Class 1 

 Reaction to Fire Classification

 A2 - s1 d0

Durability Properties

 Freeze / Thaw Resistance

Pass

 Warm Water Resistance

 Pass

 Heat / Rain Resistance

 Pass

 Soak / Dry Resistance

 Pass


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