SECTION THROUGH RCC CHAJJA

  • Clean the surface of all loose particles, dust, cement laitance etc. and moisten with water.

  • Prepare a lumpfree consistency slurry of Polyalk WP and Cement in a proportion of 1:5 (by weight) and apply this slurry to the surface to be waterproofed, care should be taken that no area remains uncoated. Take 1’-0” above chajja on the wall and around drip mould.

  • Apply one more coat of similar slurry keeping an interval of 24 hours between two successive coats.

  • After 48 hours cure the coating by sprinkling water for 2-3days.

  • Provide a watta between the brick wall and the RCC Chajjas of larger radius filling the same with brick bat coba to drain the rainwater instantly.

  • Provide a levelling course of 1:4 Cement Mortar in thickness of 10-15 mm as required.

  • Finish as per normal practice.