PPGI Roofing Sheet

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PPGI is pre-painted galvanised iron, also known as pre-coated steel, coil coated steel, color coated steel etc., typically with a hot dip zinc coated steel substrate. The term is an extension of GI which is a traditional abbreviation for Galvanized Iron.

PPGI is used in construction for manufacturing roofing sheets, roofing tiles, walls, doors and windows, partitions, panels, louvers, slotted angles and valley gutters. The most common application of Pre-painted Galvanized Iron (PPGI) is the construction industry.


Metal sheets - Metal roofing sheets like steel and aluminum are durable, long-lasting, and can withstand extreme weather conditions. They are lightweight, fire-resistant, and energy-efficient, making them an excellent choice for residential and commercial roofing.

Country Of Origin : India

  • Additional information

    Advance Information*

    Overview of Pre-Painted Galvanised Iron (PPGI) Roofing Sheets

    Pre-Painted Galvanised Iron (PPGI) Roofing Sheets, often referred to by various other names such as pre-coated steel, coil coated steel, or color coated steel, are steel sheets that have undergone a process of being pre-coated with a paint system. This typically begins with a hot dip zinc coated steel substrate, which provides a sturdy and durable base. The coating process involves the steel being cleaned, then painted with layers that can include primer, pre-treatment layers, topcoat, and in some cases, a backer. The result is an aesthetically appealing and highly practical material that is ideal for various construction purposes.

    Given the versatility and robust nature of PPGI, it finds multiple applications in the construction industry, notably in the manufacture of roofing sheets, roofing tiles, walls, doors, windows, partitions, panels, louvers, slotted angles, and valley gutters. Among these, roofing sheets are perhaps the most prevalent use, offering a plethora of advantages ranging from weather resistance to energy efficiency.

    Technical Specifications and Features

    PPGI roofing sheets are characterized by various technical specifications that contribute to their effectiveness and reliability.

    Coating Layers and Durability

    • Base Metal: Typically, a hot-dip galvanized steel.
    • Prime Coating Material: Polyesters, SMP (Silicone Modified Polyesters), PVDF (Polyvinylidene Fluoride).
    • Coating Thickness: The paint layer generally ranges from 18 to 25 microns on the top surface and 5 to 10 microns on the back surface.
    • Coloured Coating: Available in an extensive palette of colors and finishes, including matte and glossy.

    Dimensions and Profiles

    • Sheet Thickness: Commonly ranges from 0.2 mm to 1.2 mm.
    • Width: Standard widths are typically 600 mm to 1250 mm.
    • Lengths: Can be customized according to project requirements.
    • Profile Design: Various profiles such as trapezoidal, sinusoidal, ribbed, and corrugated to suit aesthetic and functional needs.

    Applications and Benefits

    Roofing Systems

    • Residential Roofing: Ideal for homes due to their lightweight and aesthetic appeal. They are also fire-resistant and energy-efficient, contributing to better insulation.
    • Commercial Roofing: Frequently used in commercial buildings and warehouses for their durability and easy installation process.
    • Industrial Roofing: Perfect for factories and large industrial complexes since they are robust enough to withstand harsh environmental conditions.

    Other Construction Uses

    • Walls and Cladding: PPGI sheets are often used for exterior wall cladding, providing a modern appearance while also protecting the building from the elements.
    • Doors and Windows: Their resilience and variety of finishes make them suitable for manufacturing durable doors and sleek window panels.
    • Partitions and Panels: In commercial settings, these sheets can be used to create partitions and panels. Their fire resistance and aesthetic appeal are additional advantages.
    • Louvers: Effective in ventilation systems while adding to the building's visual appeal.
    • Slotted Angles and Valley Gutters: Used in drainage systems to ensure efficient water flow and structural integrity.

    Advantages of PPGI Roofing Sheets

    Durability and Weather Resistance

    One of the primary benefits of PPGI roofing sheets is their long-lasting nature. The zinc coating and additional paint layers provide a robust defense against corrosion, making these sheets ideal for use in various climates, including coastal areas where rusting is a common concern.

    Lightweight and Easy Installation

    PPGI sheets are lighter in weight compared to traditional roofing materials like concrete, which simplifies the transportation and installation process. This reduces labor costs and time, making them a practical choice for various construction projects.

    Fire Resistance

    The inherent properties of PPGI make it fire-resistant, contributing to the safety and longevity of buildings. This characteristic is particularly crucial in industrial and commercial applications where fire hazards are a significant concern.

    Energy Efficiency and Insulation

    These roofing sheets reflect solar radiant energy, which helps keep the interiors cooler during summers and warmer in winters. This energy efficiency translates to reduced energy costs for heating and cooling systems, making them an economical choice in the long run.

    Aesthetic Versatility

    Available in a range of colors, finishes, and profiles, PPGI roofing sheets offer tremendous aesthetic versatility. They can complement various architectural styles, enhancing the overall visual appeal of a building.

    Available Variants

    Based on Coating Type

    • Polyester (PE): Offers excellent durability and gloss retention, suitable for general use.
    • Silicone Modified Polyester (SMP): Known for higher chemical and heat resistance, SMP coatings last longer in extreme conditions.
    • Polyvinylidene Fluoride (PVDF): Known for its superior weather-resistant properties, ideal for buildings exposed to harsh climates.

    Based on Profiles


    *Disclaimer: This additional description has been automatically generated and has not been audited or verified for accuracy. It is recommended to verify product details independently before making any purchasing decisions.
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