REPAIR TO ROOF TREATMENT AND OTHER CERTAIN B/R WORKS ETC AT SECTOR 28 AND 47 CHANDIGARH UNDER GE (AF) CHANDIGARH

Material and labour, cleaning the new or old pastered or concrete surfaces and water proofing treatment of roof horizontal surfaces consisting as under:- (i) Remove existing water proofing treatment including brick/concrete tile ,Mud phuska etc.including removing the retrieved material to a place earmarked by civic body, Picking, sweeping clean and washing down with water to remove dust. While doing the treatment on existing roof, concrete should be thoroughly inspected for any significant distress. Such distress, if any repaired/rehabilitated and treated.Existing Pipes over roof should be realigned as directed by the Engineer-in -Charge. (ii) Providing and laying/fixing TPO (Thermoplastic Polyolefin) waterproofing membrane (min 1.2mm thickness) on prepared surface of roof & up to 300 mm of parapets and crumple joint including junction of roof and parapet. Method: TPO membrane is mechanically anchored in the roof deck using fasteners and washers, which are then overlapped with TPO membrane and heat welded. The overlap completely encapsulates the fastener, which is not exposed to any external weathering – ensuring no water, heat seeps into the insulated panel. The roof edges of the building are covered with TPO edge trims, mechanically anchored and heat welded with TPO on top – thus completely encapsulating the system, preventing any wind from blowing beneath the TPO or roof. Review attached methodology to understand the system. Providing and fixing Smartcare TPO Membrane Single PLY -FR is a high performance, heat weldable, thermoplastic polyolefin (TPO) sheet and sepration layer of geotextile of 80 to 100 GSM etc, manufactured, designed for waterproofing and heat shielding roofs of new and existing buildings. Contd/---

Contd item No 1 above/---- Top layer white & bottom layer grey with texture on top layer. Based on advanced polymer chemistry, the membrane is designed for weather resistance and fire protection, sustaining cycles of hot, cold, wet and dry environmental conditions, remaining flexible over years, maintaining its integrity and continuing to provide protection from water seepage and heat. High mechanical properties of the membrane ensure superior puncture resistance, breaking & tearing strength, while enabling excellent heat weld for fusion along the edges. High mechanical properties of the membrane ensure good puncture resistance, breaking & tearing strength, while enabling excellent heat weld for fusion along the edges.SC TPO membranes are further formulated to provide high solar reflective index,Cleaning the surface,roof padding where necessary and laying as per manufacturer’s instructions. Make: ASIAN PAINTS TPO or equivalent product of M/s MC Bauchemie / CIPY / SIKA / Pidilite Dr Fixit TPO membrane Notes : The work for Roof treatment shall also be included the following and the rates quoted by the bidders shall deemed to include the same :- (a) The work pertaining to Roof treatment shall be executed by the contractor as per MoU from authorised applicator through manufacturer of the materials after approval by the GE . (b) Sample patch of 10Sqm be prepared considering all the items of Roof treatment and shall be got approved from GE prior to carrying out further work. (c) The work shall be carried out completely as per manufacturer’s specifications and application methodology. Execution to be done with authorized trained/skilled applicator of manufacturer as per the technical guide lines laid by manufacturer. Contd/---