Galvalume Roofing Sheets | Metal Roofing

Introduction

When selecting a roofing material for industrial, commercial, and infrastructure projects, durability, corrosion resistance, and long-term value are among the most important considerations. Galvalume Roofing Sheets have become one of the most preferred roofing solutions because they combine the strength of steel with the advanced corrosion protection of an aluminium-zinc alloy coating.

Compared to conventional galvanised roofing sheets, Galvalume sheets provide superior resistance to rust, heat, oxidation, and harsh weather conditions. Their excellent thermal reflectivity also helps improve energy efficiency by reducing heat absorption, making them suitable for India’s climate.

From warehouses and factories to commercial buildings and Pre-Engineered Buildings (PEB), Galvalume Roofing Sheets deliver dependable performance with minimal maintenance.

Buildtech Roofing Solutions, Pune, manufactures, supplies, and installs premium-quality Galvalume Roofing Sheets in a wide range of profiles, thicknesses, and colours to meet the requirements of industrial, commercial, institutional, and residential projects across Maharashtra.

What are Galvalume Roofing Sheets?

Galvalume Roofing Sheets are steel roofing sheets coated with a specialised aluminium-zinc alloy that provides superior protection against corrosion and environmental exposure.

A typical Galvalume coating consists of:

55% Aluminium
43.4% Zinc
1.6% Silicon

This unique composition combines the corrosion resistance of aluminium with the sacrificial protection of zinc, resulting in a roofing material that outperforms conventional galvanised steel in many environments.

Why Choose Galvalume Roofing Sheets?

Galvalume Roofing Sheets are widely chosen because they offer an excellent balance of durability, performance, and cost-effectiveness.

Key Benefits

Superior corrosion resistance
Excellent heat reflectivity
Lightweight construction
High structural strength
Long service life
Attractive appearance
Low maintenance
Weather-resistant finish
Recyclable material
Suitable for industrial and commercial projects

How Galvalume Roofing Sheets Work

The steel core provides structural strength, while the aluminium-zinc alloy coating acts as a protective barrier against moisture, oxidation, and atmospheric corrosion.

Aluminium forms a durable protective layer that slows corrosion.
Zinc offers sacrificial protection at cut edges and scratches.
Silicon improves coating adhesion during manufacturing.

Together, these elements create a roofing sheet that withstands prolonged exposure to rain, sunlight, humidity, and industrial environments.

Types of Galvalume Roofing Sheets

Buildtech Roofing Solutions offers multiple Galvalume roofing profiles to suit different building designs and applications.

1. Trapezoidal Galvalume Roofing Sheets

One of the most popular industrial roofing profiles.

Features

High load-bearing capacity
Excellent water drainage
Modern appearance
Suitable for long roof spans

Applications

Factories
Warehouses
PEB Buildings
Commercial Complexes

2. Corrugated Galvalume Roofing Sheets

Traditional corrugated profile with improved corrosion resistance.

Benefits

Economical
Durable
Easy installation
Excellent rainwater flow

Applications

Agricultural Buildings
Industrial Sheds
Workshops
Storage Units

3. Crimp Curved Galvalume Roofing

Specially manufactured curved roofing sheets designed for architectural and industrial applications.

Advantages

Curved roof designs
Attractive appearance
Better water runoff
Suitable for large-span buildings

4. Standing Seam Galvalume Roofing

Premium concealed-fastener roofing system manufactured using Galvalume steel.

Features

No exposed screws
Leak-resistant construction
Modern architectural finish
Excellent thermal movement capability

Suitable for:

Airports
IT Parks
Commercial Buildings
Premium Industrial Projects

Major Features of Galvalume Roofing Sheets

Buildtech Roofing Solutions supplies Galvalume Roofing Sheets with advanced engineering and high-quality coatings.

Key Features

AZ150 aluminium-zinc coating
High-tensile steel base
Excellent corrosion resistance
Lightweight yet strong
Superior weather resistance
UV-resistant colour coating
High heat reflectivity
Easy installation
Low maintenance
Long operational life

Advantages of Galvalume Roofing Sheets

Superior Corrosion Resistance

The aluminium-zinc coating protects the steel core against corrosion far more effectively than conventional galvanised coatings, especially in demanding industrial and coastal environments.

High Heat Reflectivity

Galvalume Roofing Sheets reflect a significant portion of solar radiation, helping to reduce roof surface temperatures and improve indoor comfort when combined with appropriate insulation.

Lightweight Construction

Despite their strength, Galvalume sheets are lightweight, reducing structural loads and making transportation and installation more efficient.

Excellent Structural Strength

Manufactured from high-tensile steel, Galvalume Roofing Sheets provide reliable performance for long-span industrial and commercial roofing systems.

Long Service Life

With proper installation and routine maintenance, Galvalume Roofing Sheets offer dependable performance over many years, making them a cost-effective roofing solution.

Low Maintenance

The durable coating minimises corrosion and reduces the need for frequent repairs or repainting, lowering maintenance costs over the life of the roof.

Eco-Friendly Roofing Material

Galvalume steel is recyclable and supports sustainable construction by reducing material waste and contributing to energy-efficient building designs.

Common Applications

Galvalume Roofing Sheets are widely used for:

Industrial Factories
Warehouses
Manufacturing Plants
PEB Structures
Commercial Buildings
Shopping Complexes
Agricultural Buildings
Cold Storage Facilities
Logistics Parks
Workshops
Educational Institutions
Hospitals
Residential Villas
Parking Structures
Infrastructure Projects

Technical Specifications

Buildtech Roofing Solutions manufactures premium Galvalume Roofing Sheets using high-tensile steel and advanced roll-forming technology to deliver exceptional strength, corrosion resistance, and long-term performance for industrial, commercial, and residential roofing projects.

Typical Technical Specifications

Parameter	Specification
Material	Galvalume Steel (Aluminium-Zinc Alloy Coated Steel)
Steel Grade	G550 High Tensile Steel
Coating Standard	AZ150 (Aluminium-Zinc Alloy Coating)
Aluminium Content	55%
Zinc Content	43.4%
Silicon Content	1.6%
Base Metal Thickness (BMT)	0.30mm – 0.80mm
Total Coated Thickness (TCT)	0.35mm – 0.85mm
Effective Cover Width	Profile Dependent
Sheet Length	Custom Cut (Up to Project Requirement)
Finish	Plain Galvalume / Colour Coated
Installation	Screw-Fixed or Concealed Fastener (Standing Seam Systems)

Understanding AZ150 Coating Technology

The defining feature of Galvalume Roofing Sheets is the AZ150 aluminium-zinc alloy coating, which offers significantly better corrosion protection than traditional galvanised coatings.

Composition of AZ150 Coating

55% Aluminium
43.4% Zinc
1.6% Silicon

Each element contributes to the sheet’s long-term durability:

Aluminium

Forms a stable protective barrier.
Improves oxidation resistance.
Reflects heat effectively.

Zinc

Protects exposed edges and minor scratches through sacrificial action.
Helps prevent rust formation.

Silicon

Enhances coating adhesion during manufacturing.
Improves coating stability during roll forming.

Material Composition

Buildtech Roofing Solutions uses high-quality raw materials to ensure consistent product performance.

High-Tensile Steel Core

The steel core provides:

Excellent structural strength
High load-bearing capacity
Dimensional stability
Long-span capability
Resistance to deformation

Aluminium-Zinc Protective Layer

The Galvalume coating acts as a barrier against:

Moisture
Corrosion
Industrial pollutants
UV exposure
Atmospheric oxidation

This coating significantly extends the service life of the roofing sheet in many industrial and commercial environments.

Steel Grade Options

The steel grade selected affects both the strength and performance of the roofing sheet.

G550 High Tensile Steel

Recommended for:

Industrial Buildings
Warehouses
PEB Structures
Commercial Roofing
Long Roof Spans

Advantages

Higher tensile strength
Reduced deflection
Better load-bearing capacity
Improved structural performance
Lightweight construction

Thickness Options

Buildtech Roofing Solutions supplies Galvalume Roofing Sheets in multiple thicknesses to suit different project requirements.

0.30mm

Suitable for:

Temporary structures
Light-duty roofing
Small utility buildings

0.35mm

Recommended for:

Residential roofing
Farm buildings
Small commercial projects

0.40mm

Ideal for:

Workshops
Retail buildings
Small warehouses

0.45mm

Suitable for:

Commercial buildings
Industrial sheds
Educational institutions

0.50mm

One of the most widely used options for:

Factories
Warehouses
Manufacturing units
PEB Buildings

0.60–0.80mm

Designed for:

Heavy industrial projects
Long-span roofing
High wind-load areas
Infrastructure developments

Roofing Profiles Available

Buildtech Roofing Solutions manufactures Galvalume Roofing Sheets in various profiles.

Trapezoidal Profile

Excellent spanning capacity
Modern appearance
High water drainage efficiency

Corrugated Profile

Economical
Strong
Traditional wave design
Easy installation

Crimp Curved Profile

Architectural applications
Curved roof structures
Industrial canopies
Airports

Standing Seam Profile

Concealed fastening
Leak-resistant construction
Premium architectural finish
Excellent thermal expansion capability

Surface Finish Options

Plain Galvalume Finish

Preferred where a metallic appearance and superior corrosion resistance are required.

Colour-Coated Galvalume Finish

Available in a range of standard and custom colours.

Benefits

UV resistance
Colour retention
Enhanced aesthetics
Scratch resistance
Low maintenance

Manufacturing Process

Buildtech Roofing Solutions follows a strict manufacturing process to ensure every Galvalume Roofing Sheet meets quality standards.

Step-1 – Raw Material Inspection

Each steel coil is inspected for:

Material grade
Coating thickness
Surface finish
Width
Thickness consistency

Step-2 – Coil Preparation

The coils are prepared by checking:

Edge quality
Flatness
Surface cleanliness
Dimensional accuracy

Step-3 – Precision Roll Forming

Steel passes through precision roll-forming machines that create uniform roofing profiles with consistent dimensions.

Step-4 – Profile Formation

Depending on project requirements, sheets are formed into:

Step-5 – Custom Length Cutting

Sheets are cut according to project-specific lengths.

Benefits include:

Reduced installation time
Minimal material wastage
Fewer overlaps
Improved roof appearance

Step-6 – Quality Inspection

Each production batch undergoes inspections for:

Coating quality
Profile accuracy
Thickness verification
Surface finish
Dimensional tolerances

Step-7 – Packaging & Delivery

Finished roofing sheets are securely packed to prevent scratches, dents, and coating damage during transportation and site handling.

Installation Guide

Proper installation is essential for maximising the performance and service life of Galvalume Roofing Sheets.

Step-1 – Structural Preparation

Before installation:

Verify purlin spacing.
Check roof alignment.
Ensure the supporting structure meets design specifications.

Step-2 – Sheet Positioning

Roofing sheets are aligned carefully from the roof edge while maintaining proper side laps and end laps according to the roof design.

Step-3 – Fastener Installation

Fasteners are installed at recommended locations using appropriate screws and EPDM washers to create a secure and weather-resistant connection.

Step-4 – Flashing Installation

Install flashings around:

Ridge
Valleys
Roof edges
Wall junctions
Pipe penetrations
Skylights

Proper flashing helps prevent water ingress.

Step-5 – Final Inspection

Inspect the completed roof for:

Fastener alignment
Sheet overlap
Flashing installation
Surface damage
Waterproof performance

Roofing Accessories

Buildtech Roofing Solutions supplies complete roofing accessories for Galvalume Roofing systems.

Accessories Include

Self-Drilling Screws
EPDM Washers
Ridge Flashings
Valley Flashings
Side Flashings
Eave Flashings
Closure Strips
Butyl Sealants
Roof Curving Components
Sealant Tapes
Gutter Systems
Down Take Pipes

Galvalume Roofing Sheets vs Galvanised Roofing Sheets

Feature	Galvalume Roofing	Galvanized Roofing
Coating	Aluminium-Zinc Alloy	Zinc
Corrosion Resistance	Excellent	Good
Heat Reflectivity	Higher	Moderate
Service Life	Longer	Standard
Weather Resistance	Superior	Moderate
Industrial Applications	Excellent	Good
Maintenance	Lower	Moderate

Galvalume Roofing Sheets vs Colour Coated Roofing Sheets

Feature	Galvalume Roofing	Colour Coated Roofing
Base Material	Galvalume Steel	Typically Galvalume or Galvanised Steel with Paint Finish
Corrosion Protection	Excellent	Excellent (depends on coating system)
Appearance	Metallic Finish	Wide Range of Colours
Heat Reflectivity	High	High (varies by colour)
Maintenance	Low	Low
Industrial Use	Excellent	Excellent

Performance Characteristics

Buildtech Galvalume Roofing Sheets provide:

Excellent corrosion resistance
Superior weather protection
High tensile strength
Lightweight construction
Excellent heat reflectivity
Long service life
Low maintenance requirements
Strong structural performance
Environmentally responsible material selection

Quality Standards

Every Galvalume Roofing Sheet undergoes comprehensive quality checks before dispatch.

Quality Assurance Includes

Steel grade verification
AZ150 coating inspection
Thickness measurement
Profile accuracy
Surface finish inspection
Dimensional tolerance checks
Packaging quality verification

Industrial Applications of Galvalume Roofing Sheets

Galvalume Roofing Sheets are widely used in industrial, commercial, institutional, and infrastructure projects because of their superior corrosion resistance, excellent heat reflectivity, and long service life. Their aluminium-zinc alloy coating makes them a preferred choice for buildings exposed to demanding weather conditions and industrial environments.

At Buildtech Roofing Solutions, we manufacture, supply, and install premium Galvalume Roofing Sheets across Pune and Maharashtra, delivering durable roofing systems for projects of every scale.

1. Industrial Manufacturing Plants

Factories require roofing systems that can withstand continuous exposure to heat, dust, vibration, and changing weather conditions.

Galvalume Roofing Sheets provide:

Superior corrosion resistance
High structural strength
Excellent weather protection
Long service life
Low maintenance

Suitable Industries

Automobile Manufacturing
Engineering Industries
Steel Fabrication
Pharmaceutical Plants
Food Processing Units
Textile Industries
Chemical Manufacturing

2. Warehouses & Logistics Parks

Warehouses need lightweight yet durable roofing capable of covering large spans with minimal maintenance.

Benefits

Lightweight construction
Faster installation
Excellent rainwater drainage
Reduced maintenance costs
High load-bearing capability

Applications

Logistics Parks
Distribution Centres
Cold Storage Facilities
E-commerce Warehouses
Storage Depots

3. Commercial Buildings

Modern commercial buildings require roofing systems that offer both performance and visual appeal.

Galvalume Roofing Sheets are widely used for:

Office Buildings
Shopping Malls
Retail Centres
IT Parks
Hotels
Business Parks

Advantages

Clean architectural appearance
Long-lasting finish
Energy-efficient roofing
Reliable weather protection

4. Pre-Engineered Buildings (PEB)

Galvalume Roofing Sheets are one of the preferred roofing materials for Pre-Engineered Buildings due to their strength and compatibility with steel structures.

Benefits

Lightweight roofing system
Easy integration with Z and C Purlins
Faster project completion
Reduced structural load
Long operational life

5. Agricultural Buildings

Agricultural structures require roofing that performs reliably in varying environmental conditions.

Common applications include:

Poultry Farms
Dairy Farms
Cattle Sheds
Equipment Storage
Grain Warehouses

The corrosion-resistant coating helps extend roof life even in humid rural environments.

6. Educational Institutions & Healthcare Facilities

Schools, colleges, hospitals, and research centres benefit from Galvalume Roofing because of its durability, low maintenance, and energy-efficient properties.

Applications include:

Schools
Colleges
Universities
Hospitals
Medical Centres
Research Facilities

7. Infrastructure Projects

Government and infrastructure developments frequently use Galvalume Roofing Sheets for long-term performance and low maintenance.

Typical projects include:

Railway Stations
Metro Stations
Bus Terminals
Airport Buildings
Industrial Corridors
Public Utility Buildings

8. Residential & Architectural Projects

Architects increasingly specify Galvalume Roofing Sheets for modern homes and premium residential developments.

Advantages

Contemporary appearance
Durable finish
Corrosion resistance
Lightweight construction
Long service life

Industries Served

Buildtech Roofing Solutions supplies Galvalume Roofing Sheets for a wide range of industries.

Manufacturing

Engineering
Automobile
Pharmaceutical
Food Processing
Textile
Chemical

Commercial

Office Complexes
Shopping Malls
Hotels
Retail Buildings
IT Parks

Industrial

Warehouses
Logistics Parks
PEB Buildings
Workshops
Manufacturing Plants

Institutional

Schools
Colleges
Universities
Hospitals
Government Buildings

Infrastructure

Airports
Railway Stations
Metro Projects
Industrial Estates (MIDC)

Benefits of Galvalume Roofing Sheets

Exceptional Corrosion Resistance

The AZ150 aluminium-zinc coating provides excellent protection against rust, oxidation, and environmental exposure, making Galvalume Roofing suitable for industrial and commercial applications where long-term durability is essential.

High Heat Reflectivity

Galvalume Roofing reflects a significant portion of solar radiation, helping reduce roof surface temperatures. When combined with appropriate insulation, this contributes to improved indoor comfort and lower cooling energy demand.

Lightweight Construction

The high strength-to-weight ratio reduces dead load on the structure while simplifying transportation, handling, and installation.

Superior Structural Performance

Manufactured using high-tensile steel, Galvalume Roofing Sheets maintain structural integrity over long spans and under varying environmental conditions.

Long Service Life

The advanced aluminium-zinc coating system provides long-lasting protection, reducing the frequency of repairs and replacements over the building’s life cycle.

Low Maintenance

Galvalume Roofing requires minimal maintenance compared to many conventional roofing materials, helping lower operational costs for building owners.

Sustainable Roofing Solution

Galvalume Roofing supports environmentally responsible construction because:

Steel is fully recyclable.
Long service life reduces replacement frequency.
Custom sheet lengths reduce installation waste.
High solar reflectivity supports energy-efficient building design.

Maintenance Best Practices

Although Galvalume Roofing is designed for long-term durability, routine maintenance helps maximise its service life.

Recommended Maintenance

Inspect roofing annually.
Remove leaves, dust, and debris.
Clean gutters and rainwater outlets.
Check fasteners and flashings.
Repair damaged coatings promptly.
Avoid unnecessary foot traffic.
Ensure roof drainage remains unobstructed.

Why Choose Buildtech Roofing Solutions?

Buildtech Roofing Solutions is a trusted manufacturer, supplier, and installer of premium Galvalume Roofing Sheets throughout Maharashtra.

Our Strengths

Premium AZ150 Galvalume Steel
Precision Roll-Forming Technology
Multiple Roofing Profiles
Custom Sheet Lengths
Experienced Technical Team
Professional Installation Support
Competitive Pricing
Timely Delivery
Reliable After-Sales Service

Every roofing solution is designed to meet project-specific structural, functional, and architectural requirements while maintaining high standards of quality.

Service Areas Across Maharashtra

Buildtech Roofing Solutions supplies and installs Galvalume Roofing Sheets across:

Pune
Mumbai
Navi Mumbai
Thane
Nashik
Kolhapur
Satara
Sangli
Solapur
Chhatrapati Sambhajinagar (Aurangabad)
Ahmednagar
Jalgaon
Ratnagiri
Nagpur
Amravati

We also serve MIDC industrial estates, warehouses, logistics parks, manufacturing facilities, institutional campuses, commercial complexes, and infrastructure projects throughout Maharashtra.

Frequently Asked Questions

1. What are Galvalume Roofing Sheets?

Galvalume Roofing Sheets are high-tensile steel roofing sheets coated with an aluminium-zinc alloy (typically 55% aluminium, 43.4% zinc, and 1.6% silicon). This coating enhances corrosion resistance, improves heat reflectivity, and extends the roof’s service life.

2. What is the difference between Galvalume and Galvanised Roofing Sheets?

Galvalume Roofing Sheets use an aluminium-zinc alloy coating, while galvanised sheets are coated only with zinc. Galvalume generally provides better corrosion resistance, higher heat reflectivity, and longer service life in many industrial and commercial environments.

3. Are Galvalume Roofing Sheets suitable for industrial buildings?

Yes. Galvalume Roofing Sheets are widely used for:

Industrial Factories
Warehouses
Manufacturing Plants
PEB Buildings
Commercial Complexes
Logistics Parks
Cold Storage Facilities

Their strength, durability, and weather resistance make them suitable for demanding applications.

4. Can Galvalume Roofing Sheets withstand heavy rainfall?

Yes. When installed with proper overlaps, flashings, fasteners, and drainage design, Galvalume Roofing Sheets provide reliable protection against heavy rainfall and harsh weather conditions.

5. Are Galvalume Roofing Sheets energy efficient?

Yes. Galvalume Roofing Sheets have high solar reflectivity, helping reduce heat absorption. When combined with suitable insulation such as PUF Panels, Glass Wool, or Rockwool, they can contribute to improved indoor thermal performance.

6. What thickness options are available?

Buildtech Roofing Solutions supplies Galvalume Roofing Sheets in various Base Metal Thickness (BMT) options, commonly ranging from 0.30 mm to 0.80 mm, depending on project requirements.

7. Can Galvalume Roofing Sheets be colour coated?

Yes. Galvalume Roofing Sheets are available in both plain metallic finishes and colour-coated finishes, offering improved aesthetics while maintaining excellent corrosion resistance.

8. How long do Galvalume Roofing Sheets last?

The service life depends on factors such as environmental conditions, coating specification, installation quality, and maintenance. With proper installation and routine maintenance, Galvalume Roofing Sheets are designed to provide long-term performance.

9. Are Galvalume Roofing Sheets environmentally friendly?

Yes. Galvalume steel is recyclable and supports sustainable construction practices. Its durability also helps reduce the need for frequent roof replacement.

10. Why choose Buildtech Roofing Solutions for Galvalume Roofing Sheets in Pune?

Buildtech Roofing Solutions provides:

Premium AZ150 Galvalume Steel
Precision Roll-Formed Profiles
Custom Sheet Lengths
Professional Technical Support
Complete Roofing Accessories
Timely Delivery Across Maharashtra
Expert Installation Guidance

Conclusion

Galvalume Roofing Sheets are among the most reliable roofing solutions available for industrial, commercial, agricultural, and institutional buildings. Their advanced aluminium-zinc coating, excellent corrosion resistance, lightweight construction, and superior durability make them a preferred choice for modern roofing projects.

Whether you are constructing a warehouse, factory, logistics park, commercial complex, or PEB structure, Buildtech Roofing Solutions offers premium Galvalume Roofing Sheets engineered to deliver outstanding performance and value.

With high-quality materials, precision manufacturing, and professional support, we help customers across Pune and Maharashtra build roofing systems that are durable, efficient, and built to last.