(I) It is required to conceal irregularities in the background.

(II) To provide a finish that is smooth

(III) To make the surface of the wall crack free

(IV) It makes the surface hygienic

(V) It protects the surface from damage.

(VI) It provides a surface that can easily be decorated.

(VII) It may also be required to provide additional thermal and sound insulation, to modify sound absorption or mitigate the effect of condensation.

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