Details: dismantling asbestos sheet roofing including ridges, hips valley and gutters and stacking the material within 50 meters lead. providing & fixing in position double skin roof with zincalume/ galvalume colour coated & bare profile sheet with subtle square fluting factory cut at all heights for roof, side & gable cladding complete in all respect. top sheet-the end rib shall be designed for anti-capillary action. the feed material should be manufactured out of nominal 0.45 mm base metal thickness (bmt), hi-strength steel with min. 550 mpa yield strength, metallic hot dip coated with aluminium-zinc alloy (55% aluminium, 43.5% zinc &1.5% si) as per as 1397 - zincalume az150 (min. 150 gms/sq.mt total on both sides) with quality paint coat as per as/nzs 2728 type 3-4. the paint shall have a total coating thickness of nominal 35 μm, comprising of nominal 20 μm exterior smp coat on top surface and nominal 5 μm reverse backer coat on back surface over nominal 5 μm primer coat on both surfaces of
Sector: PWD