Fibre Cement Slate
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As roof covering, fibre cement can be slates or shingles.
The earliest replica slate tiles were made using asbestos cement mixed with colour pigments, giving an authentically thin, yet strong tile at a cost well below that of natural slate. Today, the asbestos content has been substituted by other materials but fibre cement slates are still widely in use.
Composition
- Fibre
- Portland Cement
- Sand
- Water
Fibre classification:
- Natural fibers: obtained from vegetable, mineral, or animal sources
- Regenerated fibers: synthesized from naturally occuring polymeric materials such as cellulose, protein, glass
- Synthetic fibers: produced from synthetic chemical polymers
The fibre plays its main role in the products. It is recommended that the fibre length should be less than 25mm. [1]
Colour
Basic slate colours, Black blue black, Grey blue grey, Purple mottled purple and green, Green red [3]