Galvanized Steel Roofing Sheet

Galvanized steel roofing sheet combines galvanized steel with corrugated design to provide great strength. It is also lightweight, which makes it easy and quick to install. That’s why galvanized roof panels are widely used in agricultural, industrial, commercial and residential buildings, such as warehouses, makeshift houses, barns, garages, etc. Wanzhi Steel has galvanized roofing sheets for sale in different thicknesses, lengths, and designs. Also, we will offer custom solutions to better meet your projects. Welcome to contact us for details!

Galvanized Steel Roofing Sheet Specification

Item	GI Roofing Sheet
Zinc Coating Thickness	40 g/m2-275 g/m2
Thickness	0.15 mm-0.8 mm
Overall Width	750 mm-1,250 mm
Effective Width	600 mm-1,050 mm
Profiles	Wavy, Tiles, IBR, etc.
Length	As per your requirements
Spangles	Big spangles, regular spangles, small spangles, zero spangles
MOQ	10 tons or 500 pieces
Packaging	Standard export packaging

About Package

Generally, the galvanized coils and sheets are packaged with iron sheets outside and moisture-proof paper or plastic film inside. Besides, it is often fixed with iron straps to avoid friction between sheets during transportation. If you have special requirements, please let us know.

How to Choose Galvanized Roofing Sheet Sizes?

During purchase, you may wonder which is better, 10 ft, 12 ft, 16 ft galvanized metal roofing sheet? And what thickness is perfect for your projects? How to decide the width? And which design is better for you? Here are some tips.

The standard size of GI roofing sheet is 0.35mm to 0.75 mm in thickness, and the effective width is 600 to 1,050 mm. We can also customize orders according to special requirements.

As for length, the standard size of galvanized roof sheets includes 2.44 m (8 ft) and 3.0 m (10 ft). Of course, the length can be cut as you desire. You can find 10ft (3.048 m), 12ft (3.658 m), and 16 ft (4.877 m) galvanized steel roof panels, and also other sizes. But considering shipping issues and loading capacity, it should be within 20 ft.

The popular thickness of the GI sheet for roofing includes 0.4mm to 0.55 mm (gauge 30 to gauge 26). You need to determine according to the use purpose, use environment, budget, etc. For example, the GI sheet for roofing or floor decking will be thicker than 0.7 mm.

As a wholesale supplier of galvanized iron roofing panels, we are glad to offer a competitive price. But considering the shipping costs, the MOQ (minimum order quantity) is 10 tons. Welcome to contact us for more details!

Uses of Galvanized Roofing Steel Sheet

GI roofing panel offers great corrosion resistance and a long lifespan. So it is widely used for industrial, commercial, residential, and agricultural purposes. Its wide applications include makeshift houses, garages, greenhouses, warehouses, barns, stables, sheds, factory plants, commercial buildings, etc.

Advantages of Galvanized Roofing Sheets

1. Sturdy and Durable

Galvanized steel roof panels are made of quality hot-dipped galvanized sheets. They combine steel strength and protective zinc coating. This makes it long-lasting and can withstand extreme weather conditions. The long service life and great strength are the primary reasons why they are popular among homeowners and investors.

2. Affordable Cost

GI sheet itself is more cost-effective than traditional roofing materials. Besides, it is lightweight, which makes it easy and quick to install. Also, it is durable and recyclable and requires less maintenance. All these factors make GI roofing sheets an economical option.

3. Aesthetic Appearance

Galvanized steel roofing sheet has a shiny and smooth surface. The corrugated design also looks brilliant from the outside. Besides, it has good adhesion so you paint it in different colors. Having a galvanized steel roof can easily serve an aesthetic purpose.

4. Fire-resistant Feature

Steel is a non-combustible and fire-resistant material. In addition, it is light in weight. Its lighter weight also makes it safe when there is a fire.

What Is GI Roofing Sheet?

GI roofing sheet is short for galvanized iron roofing sheet. It is profiled with galvanized steel sheet for roofing purposes, which has been coated with zinc. The zinc coating provides the base steel protection from moisture and oxygen. According to the galvanizing process, it can be divided into hot-dip galvanized and electro-galvanized steel sheets.

The corrugated design will improve its strength so that it can withstand harsh weather conditions. The common design includes wavy shape, trapezoidal design, ribbed galvanized roof sheets, etc. It can be used as a single-layer sheet, cladding over an existing roof, or steel sandwich panels.

How Long Does Galvanized Steel Roofing Last?

Generally, the galvanized steel roof can last more than 30 years. Under ideal conditions, it can live for up to 60 years. However, if you are near or on the beach, or in industrial areas, your roof may last only 10 years depending on weathering conditions and corrosive environments. Actually, the service life of galvanized steel roof panels mainly depends on the zinc coating thickness and the use environment. To prolong the service life, you can periodically wash your roof to remove the salt or acid from the surface. Besides, you need to choose suitable corrugated roofing sheets for your roof.

Do Galvanized Steel Roof Panels Rust?

The answer is yes, especially when exposed to weather conditions over a long time. But it is very slow. Galvanized steel roofing sheet is simply covered with a zinc layer on the surface to prevent oxidation and rust. However, when the zinc coating is broken, the substrate will rust. Below are some tips for you.

1. Choose a Suitable Zinc Coating Thickness

Generally, the thick the zinc layer, the longer the service life. Our GI roof is mainly made of hot-dipped galvanized steel sheet, with a zinc coating of 40 g/m² to 275 g/m². If your roofing sheets are used in corrosive environments, such as marine or chemical industrial areas, you can choose a thicker zinc coating roof.

2. Paint With Color Coatings

In order to prolong the service life of your roof, you can also paint the roofing sheets to prevent rust and maintain their beauty.

3. Periodical Maintenance

Galvanized steel roofing sheets are almost maintenance-free. But regular maintenance, such as cleaning with water, will remove the corrosive factors to prolong its service life.

Which Is Better Galvanized or Galvalume Roofing Sheet?

Actually, it depends. Both galvanized and galvalume sheets are widely used as roofing materials. Galvanized sheet is covered with pure zinc; while galvalume coating includes zinc, aluminum, and silicon. The combination of zinc and aluminum offers GL sheets better corrosion and heat resistance. The data show that GL roofing can last as long as more than 50 years. Besides, it offers a smoother appearance with uniform spangles. In this case, the galvalume roofing sheet is better. However, galvalume coating is easy to break if it is scratched or dented, such as the cut edge. During installing the GL roofing sheet, it is necessary to paint the cut edge. In addition, the galvalume sheet is not suitable for where animals are confined, since the ammonia gas will degrade the metal. Just choose the right roofing sheet according to the use environment and your budget. If you want more information, please contact us!

Galvanized Roofing Sheet Price

The FOB price of galvanized roofing sheets ranges from $600 to $1,200 per ton. It is influenced by the thickness, size, design, and zinc coating thickness. In recent years, steel price has kept increasing. As a GI steel roof manufacturer, Wanzhi Steel promises to offer you a factory direct sale price. Also, we will provide great discounts for bulk orders. If you are looking for galvanized steel roofing sheets, please contact us to get the latest price list.

Is Galvanized Steel Roofing Sheet Expensive?

Compared to other metal roofs, such as aluminum roofing sheets, GI roofing sheets price is lower. Besides, it is durable to use and can last decades. It is light in weight, which makes it easy and quick to install to reduce your costs. Therefore, we would like to say that, corrugated galvanized roofing is not very expensive. As a wholesaler of steel products, Wanzhi Steel promises to offer you the most competitive price. Just talk with us for details!

Request Galvanized Steel Roofing Sheet Price

When requesting the price of galvanized roofing sheet, you need to confirm some details.

1. Where you will use the roofing sheets and the expected service life, which matters the zinc coating you’d better choose. If you are not sure, please inform us of your use purpose. We will provide you with a suitable solution.
2. Confirm the design, including the roofing sheet thickness, rib height, rib space, width, length, etc. You can choose according to your preference and the architectural style.
3. If you have special requirements, you can send us a sample for a custom solution.
4. How many tons or sheets do you need? It will influence the price directly. Considering the shipping cost, the MOQ of Wanzhi Steel is 25 tons.
5. If you want more details, please feel free to talk with us.

The quality of galvanized roofing sheets mainly depends on the zinc layer thickness. The thicker the zinc coating, the better the corrosion resistance of galvanized sheet. In addition, we also need to take its performance into consideration, such as its tensile strength and yield strength. The zinc layer of the quality galvanized sheet will not fall off after being bent by 180 degrees. Also, it will not break during the tensile test. So please pay more attention to the quality rather than the price only.

Why Choose Wanzhi Steel?

Wanzhi Steel is a top galvanized steel roofing sheet manufacturer in China. Below is what we can offer.

1. Full-Size Galvanized Steel Roofing Sheet

Wanzhi Steel stocks a wide range of galvanized steel roofing sheets for sale in different sizes and designs. Besides, we also have color-coated steel roofing sheets and galvalume roof panels to choose from. More than that, we will offer custom designs to better meet your needs.

2. Factory Direct Sale Price

Our factory is located in Shandong Province and has 17 years of industry experience. As a manufacturer and trading company, we promise to offer you a cheap price without compromising quality. You can come to visit us on-site or check our factory via video chat.

3. Full Service System

With 12 years of export experience, we have developed a full service system and friendly teams, which are available in English, Chinese, Spanish, and Russian. So no matter where you are from, you will never worry about communication problems. If you have any questions, please feel free to contact us. We will get back to you in 12 hours.

Wanzhi Steel Service

1. You can visit our office and factory online or on-site.
2. We will profile and cut your galvanized steel roofing sheet to the exact size and design needed. We promise to offer you quality products and accept a third-party quality test.
3. Fast and safe delivery. The lead time will be within 20 working days.
4. Experienced sales teams. We have a multilingual team to serve clients all over the world. They are professional and friendly to answer all your questions.
5. After-sales service. If you have any questions after receiving the goods, please feel free to contact us. We will reply in 12 hours.

FAQs of Galvanized Steel Roofing Sheet

Q: Is galvanized steel roofing better than aluminum roofing?

A: Galvanized steel is much stronger than aluminum, which is more suitable for roofing materials. Besides, aluminum is more expensive than galvanized sheets. So GI roofing is better than aluminum roofing.

Q: Is galvanized metal roofing sheet heavy?

A: Compared to traditional roofing, GI roofing panels are much lighter. The weight of galvanized sheet per square meter is within 6kg. So galvanized metal roofing is not heavy. That’s why it is widely used as an over-cladding roof.

Q: Do the galvanized roof panels come in different colors?

A: Galvanized roofing sheet is silvery in color. If you want other colors, you can choose PPGI roofing sheets, which are available in different colors.

If you have any other questions, please feel free to contact us.