Supplying and laying of bitumen roofing felt, removal of old felt and grading for water proofing treatment under ECL.

Item Description/ Heading

Providing and laying four courses water proofing treatment with bitumen felt over roofs consisting of first and third courses of blown bitumen 85/25or 90/15 conforming to IS: 702 applied hot @1.45 Kg per square metre of area for each course,second course of roofing felt type 3 grade-1 (hessian based self finished bitumen felt) and fourth and final course of stone grit 6 mm and down size oror pea sized gravel spread at 6 cubic decimeter per square metre, including preparation of surface but excluding grading (The item shall be executed as per CPWD Specification and Relevant IS Codes.)

Grading roof for water proofing treatment with Cement mortar: 1:6 (1 Cement: 6 sand) with 25 mm thickness.

Removal of Felt: Taking out carefully old Bitumen Felt(one or more layers) laid over flat/Sloped roof upto the original roof level and the disposal of the same to the dumping ground within 50 meters including cleaning and preparation of the surface for laying of the new Felt

Total impact of GST for the purpose of CTC

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