My Blog

Menu
  • +91 94167-06000
  • sales@ambalicaprojects.com
  • Village Baroundi, Teh Ladwa, Dist. Kurukshetra, Haryana 136132

Colour Coated Sheets

Colour Coated Roofing Sheets

Colour-coated sheets are metal roofing or cladding sheets that have been painted and coated with protective layers to improve strength, durability, and appearance.

They are widely used in:

  • Industrial roofing
  • Warehouses
  • PEB buildings
  • Residential homes
  • Commercial buildings
  • Factories & sheds

Materials Used

The base metal sheet is usually:

  • GI (Galvanized Iron)
  • GL (Galvalume – aluminum + zinc coated steel)
  • PPGI (Pre-Painted Galvanized Iron)
  • PPGL (Pre-Painted Galvalume)

 

PPGL is the most durable and preferred for industrial roofing.

How Colour-Coated Sheets Are Made

  1. Steel coil is cleaned
  2. Zinc or Aluminum-Zinc coating is applied (for rust resistance)
  3. Chemical pretreatment
  4. Primer coating
  5. Top colour coating (polyester, PVDF, SMP)
  6. Oven curing

 

Roll forming into shapes:

  • Corrugated
  • Trapezoidal
  • Ribbed sheet

How Colour-Coated Sheets Are Made

Rust-resistant

The protective coating prevents corrosion.

Long life

PPGL sheets can last 20–40 years with minimal maintenance.

Lightweight but strong

Ideal for large-span PEB structures.

Aesthetic appearance

Available in many colours: blue, red, white, grey, green, etc.

Weather-resistant

Withstands heat, rain, UV sunlight, and industrial conditions.

Fast installation

Sheets are supplied in long lengths, reducing joints and leakage.

Where They Are Used

  1. Industrial shade structures
  2. Factory sheds
  3. Warehouses
  4. Cold storage
  5. Car parking sheds
  6. Farmhouses
  7. Schools, hospitals
  8. Shopping complexes

Standard Thickness

Common thicknesses:

  • 0.30 mm (light duty)
  • 0.40 mm (medium duty)
  • 0.45 mm (industrial standard)
  • 0.50 mm (heavy duty)

PPGL typically includes:

  • Base metal + AZ coating + Paint layers

Types of Coatings

Polyester

Affordable but shorter life.

SMP (Silicone Modified Polyester)

Better durability.

PVDF

Premium coating—best for high-end roofing, 25+ years life.

Accessories

  • Ridge cap
  • Gutter
  • Corner flashing
  • Downspout
  • Fasteners (self-drilling screws)
  • Sealant

If you want, I can also provide:

  • Colour-coated sheet types & profiles
  • Difference between PPGI vs PPGL
  • Price range (per sq ft or per kg)
  • Installation guide
  • Best thickness for your project