National Fertilizers Limited Tender

Removal of existing bitumen felt based waterproofing treatment by cutting, cleaning the exposed surface by thoroughly scrapping / brushing without damaging the roof slab.Disposal of old removed Bitumen felt/APP membrane including wastage of new APP membrane shall be done as per latest guidelines of Central/State Pollution control Board Authorities

Providing and laying 3 mm thick polymer modified prefabricated bituminous waterproofing membrane over roofs of buildings as per the technical specifications & details given in Scope of Work. The rate shall include for the following activities : (a) Surface preparation by wire brushes and cleanig to remove all loose particles, dirt, etc. from the roof surface complete. (b)Application of modified bitumenous primer @ 1.00 Ltr. Per 5.00 Sq. M. (on an average basis). (c)Laying of 3 mm thick polymer modified bituminous waterproofing membrane, each strip to have at least 100mm overlapping at longitudinal edges as well as at the ends including installing / fixing by thermofusion by gas torch.Proper sealing of overlaps shall be done by thermofusion & hot trowelling, as per direction of Engineer-in-Charge.The rate shall include for erection and removal of staging / scaffolding wherever required complete. (d) Application of bitumenous aluminium paint @ 0.10 Ltr./ Sq.M. (one or more coats). Note : Measurements shall be taken for finished area only.

Providing and applying two neat coats of elastomeric, acrylic water proof exterior coating as per manufacturers specifications with "Damp Proof" of Asian Paint or equivalent, over one coat of primer with Asian Paint Primer or equivalent approved primer as per manufacturers specification or directions of Engineer In-charge.(work includes filling of cracks of width upto 1 mm with approved sealant)