Cleaning the surface are to provide good waterproofing treatment then providing and laying screed concrete of ratio 1:2:4 admixed with WATERPROOFING TONIC , providing proper slope(1 in 120) for drainage of rain water. Then providing top smooth finishing in CM 1:4 admixed with waterproofing compound, and markingthe surface with 300 x 300 mm false
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in section "Services in roofing works and external facing of walls"