Z-sections feature one broad and one narrow flange allowing the two sections to fit together snugly, making them suitable for lapping. Z sections of the same depth and different thickness can be lapped in any combination. Purlins and Girts that are lapped form a structurally continuous line along the length of the building, a factor that contributes significantly to the reduction in building costs. When you need reliable Z-sections for your roofing and cladding projects, turn to the trusted roofing sheet supplier in Vizag, Kavya Roofing.