Roofing Sheet Roll Forming Materials: Steel, Aluminum & Coated Coil Guide

Roofing Sheet Roll Forming Materials

1. Overview of Roofing Sheet Materials in Roll Forming

Roofing sheet roll forming materials are specifically selected metals designed for durability, weather resistance, and long-term performance in outdoor environments.

In roll forming, these materials are used to produce roof panels such as PBR, corrugated sheets, standing seam panels, trapezoidal profiles, and tile-effect roofing systems.

The choice of material directly impacts:

Roof lifespan
Corrosion resistance
Appearance
Structural performance
Cost

2. Main Types of Roofing Sheet Materials

1. Galvanized Steel (GI)

Zinc-coated steel
Good corrosion resistance
Cost-effective

2. Galvalume / Aluzinc Steel

Aluminum-zinc coating
Superior corrosion resistance
Popular for industrial roofing

3. PPGI (Pre-Painted Galvanized Steel)

Painted steel with zinc base
Wide color range
Common for residential and commercial roofing

4. PPGL (Pre-Painted Galvalume Steel)

Painted Aluzinc steel
Better durability than PPGI
Ideal for harsh environments

5. Aluminum Roofing Coil

Lightweight
Excellent corrosion resistance
Ideal for coastal areas

6. Zinc Roofing Material

Premium material
Long lifespan
Architectural applications

7. Copper Roofing Material

High-end roofing solution
Natural patina finish
Extremely long lifespan

3. Material Composition & Structure

Typical roofing material structure (for coated steel):

Steel base
Metallic coating (zinc or aluminum-zinc)
Primer layer
Top paint coating (PE, SMP, PVDF)

4. Available Coil Specifications

Thickness Range

0.3mm – 0.8mm (typical roofing range)

Coil Width

914mm – 1250mm

Coil Weight

3 tons – 10 tons

Coil ID / OD

ID: 508mm / 610mm
OD: up to 1500mm

5. Mechanical Properties

Typical values:

Yield Strength: 220 – 550 MPa
Tensile Strength: 300 – 600 MPa
Elongation: 15% – 30%

6. Coating Types for Roofing Materials

Polyester (PE)

Cost-effective
Standard roofing applications

SMP (Silicone Modified Polyester)

Better UV resistance
Longer lifespan

PVDF

Premium coating
Best color retention
Longest lifespan

7. Surface Finishes

Gloss finish
Matte finish
Textured finish
Embossed finish

8. Common Roofing Profiles Produced

PBR panels
Corrugated sheets (13/3, 18/76)
Standing seam panels
Trapezoidal sheets
Tile effect panels
Ribbed roofing sheets

9. Advantages of Roofing Sheet Materials

Weather resistance
Corrosion protection
Wide range of finishes
Lightweight
Long service life

10. Disadvantages / Limitations

Coating damage during forming
Oil canning in thin sheets
Price variation based on coatings
Requires proper installation
Depends on environment

11. Roll Forming Machine Considerations

Roll Tooling

Chrome plated rollers recommended
Profile-specific design

Speed

15–40 m/min

Lubrication

Not recommended for painted materials

Cutting

Hydraulic or flying shear

Common Issues

Paint cracking
Surface scratching
Panel waviness (oil canning)

12. Common Problems in Production

Oil canning in panels
Paint cracking
Surface damage
Uneven rib forming
Width inconsistency

13. Pricing Guide

Typical global pricing:

GI Roofing Coil: $700–$1000/ton
PPGI Roofing Coil: $900–$1400/ton
PPGL Roofing Coil: $1000–$1600/ton
Aluminum Coil: $2000–$3500+/ton

Factors affecting price:

Coating type
Thickness
Material type
Origin

14. Comparison of Roofing Materials

PPGI vs PPGL

PPGI = lower cost
PPGL = better corrosion resistance

Steel vs Aluminum Roofing

Steel = stronger, cheaper
Aluminum = lighter, corrosion resistant

GI vs Galvalume

GI = zinc coating
Galvalume = aluminum-zinc coating

15. Best Industries Using Roofing Materials

Residential construction
Commercial buildings
Industrial facilities
Agricultural buildings
Infrastructure projects

16. How to Choose Roofing Sheet Material

Choose Based On:

Climate (coastal, desert, humid)
Budget
Required lifespan
Aesthetic requirements
Structural needs

General Guide:

Budget: GI
Mid-range: PPGI
High performance: PPGL / PVDF
Premium: Aluminum / Zinc / Copper

17. FAQ Section

What is the best material for roofing sheets?

Depends on environment—PPGL and PVDF are top performers.

What thickness is used for roofing?

Typically 0.3mm–0.8mm.

What coating lasts the longest?

PVDF coatings.

Can all roofing materials be roll formed?

Yes, most are designed for roll forming.

What causes oil canning?

Material stress and thin sheet properties.

18. Machine Matcher Section

We supply roll forming machines for all roofing sheet materials.

Custom-built roofing panel machines
Designed for PBR, corrugated, standing seam, and more
Global delivery available
UK and USA technical support

Contact:
Machine Matcher
Sales & Technical Team

Quick Specs

Thickness
0.3–0.8mm

Yield Strength
220–550 MPa

Coil Width
914–1250mm

Coil ID
508 / 610mm