Product Description

Introduction
Weibao-L Boardis an autoclaved fibre cement reinforced calcium silicate board (alias as fibre cement board in North America) that is **0% free from asbestos, sepiolite, inorganic fibres or formaldehyde.Weibao-L Boardis specially designed for use in applications where impact resistance is required in a high humid environment. It is a versatile, economic building board substitute of plywood, cement-bonded particle board, gypsum boards or magnesium boards. It is light weight, robust and moisture resistant. It will not warp, swell or decay in wet area.
Weibao-L Boardis an excellent substrate for ceramic tiles. It can be applied in direct weathering applications when used in conjunction with external grade paint finishes. The board is manufactured to ISO ***1 quality management system and ISO****1 environmental management system, and has obtained the Green Product Label Award issued by National Environment Protection Bureau。

Description
Weibao-L Board is produced from a mixture of cement, ground sand, special cellulose fibres and selected fillers to impart durability, toughness and moisture resistance. The board is then cured by an autoclaving process whereby the ingredients are reacted together under the effects of super-heated steam and high pressure. The synthetic cement silicate binder provides exceptional dimensional stability and an unrivalled resistance to movement due to effects of moisture or heat. The board will not rot or support fungal growth and is unaffected by sunlight or steam. The board does not contain any soluble ingredients or free alkali which could be dissolved by moisture or condensation and causing unsightly marks. If exposed to moisture, the board will completely recover on drying out, with no permanent loss of strength. The board will not degrade with time and within normal applications, the life of the product is limited only by the durability of the supporting structure and materials used in fastening. Weibao-L Board is natural off white in colour and has a smooth finish on one side and a slightly textured reverse.

Size
Thickness    6/9/*2/*5mm ~ *5mm
Widths    **0/***0/***0 mm
Lengths    ***0/***0/***0/***0/***0 mm
Manufacturing Tolerances
Length tolerance    +/- 5mm
Width tolerance    +/- 5mm
Thickness tolerance    +/- 0.3mm
Diagonal tolerance    +/- 5mm
 
Performance
Density    ***0 kg/m3 +/*6%
Weight (approx.)    8.*0kg/m2 6mm
*2.*0kg/m2 9mm
*7.2kg/m2 *2mm
Surface alkalinity    pH ***0
Flexural strength    *0.5 MPa (along grain)
Flexural strength    *3.8 MPa (across grain)
Moisture movement (ambient to saturated)    0.5 mm/m
Moisture content    Ex works *0 - *5%
In situ  - 6%
Thermal conductivity    0.*0 W/mK
Resistance to continuous heating    *0°C
Non-combustibility    BS **6: Part 4
BS EN ISO: ***2: ***2
GB ***4: Grade A
Heat of combustion    BS EN ISO ***6: ***2
Building regulations classification    Euro Class A1
Non-permeability    ASTM C***5: ***3, and No leakage after 6 hours of continuous water spray at 0.5 litre/minute under **0pa pressure
Freezing and thawing test    No alteration nor de-lamination after *5 cycles of freezing/thawing (GB/T********7)
Acoustic insulation     Rw *8dB/STC *8 for *8mm thick partition
Uniformly distribution load test(Clear span at **0mm)    *4mm board*8 KN
BS EN ***5: ***8
BS ***9 Table 1
Deflection subject to Uniformly distribution load at 3KN/㎡(Clear span at **0mm)    *0mm board
No visible damage
BS EN ***5:***8
BS ***9 Table 1
  
Application
Weibao-L Board can be used in a wide variety of building applications because of its easy working, fixing and decorating characteristics. Typical applications include:
 
1.Roofing substrate panels
2.Impact and acoustic wall & ceiling panels
3.Internal and external wall linings
4.Bathroom and shower partitions
5.Kitchen and Laundries
6.Ceramic tiles backing boards
7.Domestic decking applications such as balconies, verandahs and pool surrounds
8.Bus bar or electrical protection
9.Cooling tower linings
*0.Facades, planking and shingles
*1.Parapet linings
*2.Sunscreens
*3.Floor tiles/composite floor panels
*4.Sanitary cubicles
*5.Decorative and moisture resistant ceiling
 
Health & Safety
Weibao-L Board is formulated without asbestos or sepiolite or any inorganic fibres. When using power saws or sanders in a confined space, dust extraction equipment is recommended to control dust levels. Weibao-L Board is designed for non-load bearing construction. Horizontal boards or ceiling panels must not be walked on as they are not designed to take additional loads between supports. If there is a risk of this occurring, warning notices should be displayed. Fixers must ensure that they work from adequate and safe platforms where necessary.