• Galvanized Steel Sheet
  • Galvanized Steel Sheet
  • Galvanized Steel Sheet

Sandwich Sheet Manufacturer

  • Fast Delivery 4-7 days
  • With fire retardant B1 fire rating
  • PPGI Steel or Galvalume Steel skin 0.4-0.8mm
  • Thickness 40-200mm
  • Competitive Price

Your Premier Manufacturer and Supplier of Sandwich Sheet.

Industries, offices, malls, houses, and storage warehouses need excellent insulation to maintain a good temperature inside the building. Without the use of a Sandwich Sheet, there is no insulation and high utility bills because of air conditioning and heating inside the building. Good insulation will help you cut down on utility costs.

A Sandwich Sheet makes your building look much more presentable and well put together that too, with minimum construction time. Easy installation, affordability, benefits, and better appearance, you get all this fromSunnyda.

We are determined to bring about the most recent research and technology into practice. Sunnyda has a highly educated and experienced team of professionals that work hard to bring the best Sandwich Sheet with maximum benefits and almost no drawbacks at all.

We do not compromise on the quality and only use premium quality materials to make a Sandwich Sheet. Sunnyda guarantees a durable and reliable product that might last you for ages. With little maintenance and protection, a Sandwich Sheet can modernize your building and make it much more attractive.

Our customer service is available 24/7 and you can just give us a call to get all the information regarding our stock and how you can choose the one for yourself. Sunnyda has the most amazing and extensive collection of Sandwich Sheets which will help you pick out the best one.


1, Wind resistance: Grade 11(wind speed ≤ 111.5km/h)

2, Earthquake resistance: Grade 8

3, Live load capacity of roofing: 0.5KN/m2

4, External and internal wall heat transmission coefficient: 0.35Kcal/m2hc

5, Live load of corridor is 2.0KN/m2

6, Sunnyda would like to design your steel building as per your requirement

Our Service:   Engineering, drawing, calculation -production-shipping-installation-warranty-after service support you develop your business

Sunnyda Support Your Business
Galvanised Steel Flat Sheet
Galvanised Steel Flat Sheet
16 Gauge Galvanized Steel Sheet
16 Gauge Galvanized Steel Sheet
Prepainted Galvanized Steel Sheet
Prepainted Galvanized Steel Sheet
Perforated Galvanized Steel Sheet
Perforated Galvanized Steel Sheet
Corrugated Galvanized Steel Sheet
Corrugated Galvanized Steel Sheet
Hot Dip Galvanized Steel Sheet
Hot Dip Galvanized Steel Sheet
Floor Decking Galvanized Steel Sheet
Floor Decking Galvanized Steel Sheet
Diamond Pattern Galvanized Steel Sheet
Diamond Pattern Galvanized Steel Sheet
26 Gauge Galvanized Steel Sheet
26 Gauge Galvanized Steel Sheet

Sandwich Sheet -An Inclusive Guide for your Strong Building by Sunnyda.

A Sandwich Sheet will help you get rid of all the worries about the walls and roofs of your buildings. Whether you want to make your buildings look stylish or you want them to be well protected, go for a good quality Sandwich Sheet.

As much as the sandwich panel is important for insulation, a Sandwich Sheet shall also be chosen correctly. The size, the quality, and the material can make or break the value of your building.

The finest quality will help you attain maximum insulation, best protection, noise proofing, and protection against fire. The material can be either combustible or non-combustible.

The most commonly used metals for a Sandwich Sheet are aluminum and steel. Although both the metals have their pros and cons, stainless steel is preferred because of its enhanced qualities.

Here is a complete guide about choosing the best Sandwich Steel and saving money later in the years. So let’s get started.


1.What is a Sandwich Sheet?
2.What are the Features of a Sandwich Sheet?
3.What are the Properties of a Sandwich Sheet?
4.What is the Composition of a Sandwich Sheet?
5.How can a Sandwich Sheet be used for Roofing?
6.What are the Applications of a Sandwich Sheet?
7.How can you Make your Sandwich Sheet Waterproof?
8.Can a Sandwich Sheet Control Fire?
9.What is the Most Commonly used Core Material with the Sandwich Sheet?
10.What are the Outstanding Benefits of a Sandwich Sheet?
11.What are the Different Core Types Available for a Sandwich Sheet?
12.How to Select the Perfect Sandwich Sheet for Various Conditions?
13.How can a Sandwich Sheet Provide Thermal Insulation?
14.How to Install your Sandwich Sheet for Paneling?
15.How a Sandwich Sheet can Provide Fire Resistance?
16.How to Provide Environmental Protection to your Sandwich Sheet?


What is a Sandwich Sheet?

Although a Sandwich Sheet is not the structural material of a building. But it is a very important part of the curtain material which is used for roofing and paneling. It serves the purpose of thermal insulation.

A Sandwich Sheet means the covering of the outer edges of a sandwich panel which has two parts, namely a core and an outer covering.

For walls and roofs of buildings, it is a perfect material for cladding. Though it does not have a very supportive material it is great for the protection and outlook of the building.

There is a huge variety of a Sandwich Sheet which is based on the core materials to which it is attached. The amount of insulation, soundproofing, and reaction to weight and fire determine the category of a Sandwich Sheet.

Sheet Sandwich can be made up of different materials or metals based upon the application. Getting to know the features and best uses is Important so that you get the most out of your investments


What are the Features of a Sandwich Sheet?

A Sandwich Sheet has the following features which make it desirable to be used for many purposes like insulation and fire resistance:

  • It provides perfect insulation.
  • A Sandwich Sheet offers maximum heat resistance.
  • It appears needed and gives a good appearance to the building.
  • Corrosion resistance is another unique yet rare property.
  • While being sturdy and strong, a Sandwich Sheet is light and easily transportable.
  • The Stainless steel material in metallic sheets enhances the quality.
  • Only Supreme quality is promised to ensure the long life of the building, cladding, or roofing.
  • It is highly durable and reliable.
  • You don’t need to spend on labor as it is quick to install. However, care must be taken while handling it.
  • A Sandwich Sheet is a very affordable option and it allows you to have multiple benefits.
  • Metallic Sandwich Sheet offers great fire resistance.
  • As it does not harm the environment, it plays a vital role in environmental protection.
  • Safe use is ensured as it is cut and trimmed properly to avoid any hazards.
  • It is reusable and therefore, it is a one-time investment.


What are the Properties of a Sandwich Sheet?

A Sandwich Sheet has many desirable properties which make it an ideal choice for industries, buildings, shopping malls, warehouses, and other such setups.

Best Insulation

It is difficult to get good insulation when there is a huge difference between the internal and external temperature.

The double-layer sandwiching of a core content prevents the heat from transferring from any of the two conditions.

The following properties of the Sandwich Sheet must also be kept in mind:

  • Material property
  • Density (kg/m3)
  • Tensile modulus (GPa)
  • Compressive modulus (GPa)
  • Tensile strength (MPa)
  • Compressive strength (MPa)
  • Shear strength (MPa)
  • Tensile failure strain (%)
  • Shear failure strain (%)

By keeping in view these properties, you can choose the best one for your Application.


What is the Composition of a Sandwich Sheet?

A Sandwich Sheet is made of metal which makes it strong yet flexible.

The most commonly used metals are steel, iron, and aluminum. To obtain enhanced properties, two or more metals are mixed so that the efficiency can be increased.

Metal is preferred for a Sandwich Sheet because of its sturdiness and high melting point. Also, the melting point of metal lies in a wide range, therefore it is more reliable.

Another plus point of metals is that they can be protected from external damaging factors by coating with paint or any other protective material.

A metallic Sandwich Sheet is not usually very light in weight but it provides a perfect barrier against fire because it is non-combustible.

Paper and cardboard can also be used as a Sandwich Sheet but it comes with a lot of cons. Although these sheets are very light in weight they are easily combustible thus increasing the spread of fire.

Also, they have a short life and cannot be relied upon for several years. But the paper sheets add to the safety of the environment and help in environmental protection because they use recycled paper.


How can a Sandwich Sheet be used for Roofing?

A Sandwich Sheet is a great option to be used for roofing because it provides maximum protection and is also affordable. It is extensively used for the cladding of walls and roofing.

You can choose the most appropriate Sandwich Sheet for your roofing considering the core material which is used along with it;


Sandwich Sheet with EPS Core

It is the most affordable option and also provides maximum safety and protection. Due to affordable prices and easy installation, this type is used the most.


Sandwich Sheet with Mineral Wool Core

When increased resistance to fire is required, mineral wool is used as a core. It provides maximum fire resistance.


Sandwich Sheet with PIR Core

A Sandwich Sheet with PIR Core suits the best when enhanced thermal insulation is required. It can be used for maximum temperature control in buildings and industries.

These different core materials are also extensively used for housing projects. The objective is to obtain maximum insulation and increased resistance to fire. All this has to be done within a budget and it must be long-lasting.


What are the Applications of a Sandwich Sheet?

A Sandwich Sheet is a great choice for insulation and protection and therefore it is greatly used in many fields.

It has large unit coverage with a short installation time, so it is very popular in construction. Some of the most common applications are as follows;

  • Shopping malls
  • Office buildings
  • Industries
  • Freezers and cold storage areas
  • Sports clubs
  • Manufacturing factories
  • Water houses
  • Halls and community areas
  • Logistic hubs

Some of the applications are explained below;


Roofing Application

A Sandwich Sheet is preferred to be used for roofing and paneling because it provides reasonable insulation.

Also, it is budget-friendly and is a one-time investment. It helps to build a waterproof membrane for your building thus increasing its life.


Food Industry

For cold storage rooms, warehouses, and pharmaceutical storage areas, insulation is necessary. This insulation is to maintain strict temperature and other external conditions in the store so that the food stays fresh.

Optimum temperature helps to increase the shelf life of food and keep it in the best possible condition.



Medical equipment and other necessities in laboratory-like chemicals etc. need a well-maintained temperature. A Sandwich Sheet helps to attain the optimum temperature easily.



All the groceries and other storage items are kept safe by using insulation from a Sandwich Sheet. In this way, the items are saved from moisture as well as fire. This is a great way to ensure protection.


Car Showrooms

A Sandwich Sheet not only gives a modern look to your car showroom but also makes it an extremely safe place. You don’t have to worry about any external agents damaging your cars.


Cold Storage Areas

To restore the freshness of your food, you need food refrigeration which is not possible without a good insulating system. Therefore, it is best to use a Sandwich Sheet to enhance the efficiency of refrigeration.


Recreational Facilities and Arenas

It is best to maintain the temperature in the building by using some insulation. It will not just help to cut down on utility bills but also will lead to considerable change in the inefficiency of cooling and heating.


How can you Make your Sandwich Sheet Waterproof?

It is necessary that your Sandwich Sheet is waterproof and no water or moisture can perforate into the core and cause damage to the insulation thus destroying the purpose.

Therefore, you can easily and conveniently make it waterproof. Liquid rubber is a great way for waterproofing your Sandwich Sheet. It is not only easy but also stays for long and is very durable. It has a safe use and can be used extensively.

Make sure that you could apply the liquid rubber because there is always a risk of an open fire. Also, it is super flexible and you won’t face any problem with the mobility of your panel. It does not restrict movement and so it is quite convenient to use.

Another method to make your Sandwich Sheet waterproof is to combine your liquid rubber with geotextile and apply it to the joints.

You can also use Spray Grade for easier application. It leads to a 2mm thick layer and therefore it provides maximum protection against moisture which can cause serious effects in the long run.


Can a Sandwich Sheet Control Fire?

A Sandwich Sheet has the ability to control fire because it provides fire resistance.

The core material with which a Sandwich Sheet is used determines the efficiency of fire resistance. If it is used with polyurethane then it acts as a perfect blockage for fire.

Polyurethane does not melt and therefore does not drip. It coats the metal surface and stops the fire by reducing the combustion action.

If it is used with materials such as XPS and EPS then it is more likely that the fire cannot be stopped and the fire-resisting feature is not very efficient.

Also, the metal surface itself is a good barrier to fire. The melting point of metals is very high and therefore, they act as a good blocking agent for fire.


What is the Most Commonly used Core Material with the Sandwich Sheet?

The insulating material used as a core along with the Sandwich Sheet plays an important role in the efficiency of thermal conductivity and insulation.

The strength to weight ratio is also an important factor to be considered when choosing the Sandwich Sheet and the core material.

The most commonly used core materials are mineral wool, PIR, PUR, and EPS, etc. All these materials vary in price and properties and you can pick the one according to your application and budget.

Each material has its characteristic properties. For example, PIR has maximum insulation but low thermal conductivity. It must be used in an application with similar demands.

Similarly, EPS is good but mineral wool has better qualities because it has a maximum thermal resistance. However, the pricing is also an issue and mineral wool is expensive.

EPS is meant for interior wall partitions in most buildings. Also, it is the most affordable option of them all. Mineral wool is a little on the pricier side but it serves the purpose well.

Another point that must be considered while purchasing a Sandwich Sheet with the combination of the insulating core material is the strength of the material and thickness of the sheet.

Bending stiffness and density of the material also count, so all these factors add up to make the best insulation system for your buildings.

There are two most common forms in which a Sandwich Sheet is required. One is open structured and the second one is closed structured.

Some other materials used with a Sandwich Sheet are; polyurethane, polyethersulfone polyvinyl chloride, syntactic foam, balsa wood, honeycomb, Polystyrene, and polyethylene foams

To make the honeycomb stronger and more reliable, you may add other materials to get desired properties.

Along with steel and cardboard, the sheet material can also be made of glass or fiber thermoplastics. These materials provide the perfect lamination for the core material.

The material which is used very commonly is recycled paper which is used in honeycomb structures to make it lighter and better.


What are the Outstanding Benefits of a Sandwich Sheet?

A Sandwich Sheet has a number of benefits and therefore it is extensively used. It is not just affordable but a very reliable material to be used for your buildings and other applications. The benefits are explained below:



The most common and widely seen benefit of a Sandwich Sheet is that it is affordable. It provides protection and insulation with a comparatively smaller investment than other methods.

New buildings require special technology and a Sandwich Sheet is a perfect choice for constructing innovative buildings. However, the cost of labor and shipping does count separately.


Construction Time

Every building needs a hefty sum of money as an investment. You cannot get the revenue until the building is completed. Therefore it is always preferred that the building time be as short as possible.

By making use of a Sandwich Sheet, you can complete a building that was supposed to be completed in 6-7 months, in only a month.


Construction Process

By using a Sandwich Sheet for a sandwich panel, you can significantly make the construction process much simpler.

It will help the engineers as well as the laborers by reducing the workload. Also, it is a much safer option and premade sheets make your building look quite appealing.


Best Sound and Thermal Insulation

Sound and thermal insulation are desirable in some applications and therefore a Sandwich Sheet is the only solution. With increasing global warming and noise pollution, insulation has become an important factor in new buildings.


Shield Against Corrosion

A Sandwich Sheet makes your building 100% corrosion resistant by providing a shield against all the damaging external agents. By keeping moisture away, it reduces the chance of oxidation thus increasing the life of your building.


What are the Different Core Types Available for a Sandwich Sheet?

The different core types that can be used with a Sandwich Sheet are as follows:

  • Polystyrene
  • Polyethylene
  • Polyurethane
  • Polyethersulfone polyvinyl chloride
  • Syntactic foam
  • Balsa wood and honeycomb


How to Select the Perfect Sandwich Sheet for Various Conditions?

To select the perfect Sandwich Sheet, you must consider the following points:

Even for demanding industries such as automotive sectors, buildings, warehouses, the idea is to create an innovative product that is not only efficient but also very cost-effective.

The first properties to look for in a Sandwich Sheet are the high absorption potential, maximum flexibility, and increased stiffness/strength ratios.

The industry is striving to come up with the latest and most usable techniques and machinery to save time and aid in research and development.

It is now possible to get the best roofing and wall cladding with a Sandwich Sheet so that you can enjoy maximum efficiency. It also gives great structural performance and can withstand every serious blow as well.

The design and structural composition of a Sandwich Sheet determines its properties.

  • Therefore, it is necessary to study your application properly.
  • Then look for the key features that you might need every day in your application.
  • Talk to the manufacturer about your needs and demands.
  • Do proper research and get the best one by collecting reviews.
  • Make sure you use the right combination by testing it out and then set it up for any occasion.

The best Sandwich Sheet should have the best stiffness-to-weight ratio. The density requirement and bending properties must also be kept in mind.


How can a Sandwich Sheet Provide Thermal Insulation?

A Sandwich Sheet does not provide thermal insulation itself. However, when it is used in a Sandwich Panel, it serves the function very well.

Also, thermal resistance is not the property of every Sandwich Sheet. Therefore, it varies with the material and composition.

A Sandwich Sheet is used to line an insulating material, which is used in the core. The sheets adhere to the core material with the help of a strong adhesive.

The Sandwich Sheet is metallic and gets hot but does not transmit the heat to the other structures around which it is present.

The insulating material provides a great medium for no conduction of heat and energy. Therefore, you can always make your building, office, house safe by ensuring fire resistance.


How to Install your Sandwich Sheet for Paneling?

To install a Sandwich Sheet for paneling, you must keep the following points in mind:

  • It is an easy process and takes a few hours only to get installed.
  • For a 600-meter square Sandwich Sheet, you only need 8 hours if you have experienced workers and cooperative labor.
  • When the Sandwich Sheet is delivered to the site, make sure all the components are complete and the sheets are all intact.
  • All the accessories shall be properly packaged so that there is no damage to any piece.
  • Unload all the materials with the help of handling equipment and experienced staff. If the loading and unloading are not done carefully, it may lead to injuries and serious damage.
  • Remove the protective film from the surface of the Sandwich Sheet.
  • Make sure that the subframes are properly placed. Also take care of the beams, purlins, and posts.
  • Use appropriate fasteners to attach the Sandwich Sheet to the structural components of the subframe.
  • Now seal all the joints to make sure that the assembly remains sturdy and strong.


How a Sandwich Sheet can Provide Fire Resistance?

A Sandwich Sheet can provide fire resistance because of the following properties:


The Sheets are Metallic

Metals have a very high melting point and therefore they can resist fire. Although metals are good conductors too, the heat is not transmitted because of the insulating material.

The insulation can be either caused by creating a vacuum or using any other insulating material.


The Sheets are Non-Combustible

As a Sandwich Sheet is made up of metal, it is non-combustible and does not catch fire itself. If it would have been any other material such as cardboard or paper, there would have been a high fire risk.


How to Provide Environmental Protection to your Sandwich Sheet?

To provide environmental protection to your Sandwich Sheet, you must take care of the following things:



Make sure that you paint your Sandwich Sheet carefully. There should be no area on the sheet which is left uncoated with paint.

A paint coating will perform its action as a barrier between the metallic surface and the damaging agents from the environment, like rain, dust, etc.

The right paint and resin can save it from harmful external agents like direct sunlight, moisture, and oxidation.



Corrosives like strong acids and alkalis can cause damage to the Sandwich Sheet thus deforming it. Therefore, it is important to keep the sheets away from any chemicals.



A Sandwich Sheet must be stored in a dry environment. You cannot place it outdoor because direct sunlight, rain, and dust will damage it. Also, make sure that you don’t store it with any other chemical or reacting agent.



A Sandwich Sheet needs regular maintenance so that any flaw can be detected earlier. If there is any damage, you should get it fixed as soon as possible.

Also, if any part of the sheet has started rusting, it can spread to the whole sheet. Therefore, always keep it well maintained.

Regular painting and cleaning are necessary so that the sheet is more durable and lasts longer.


Protective Coating

A Sandwich Sheet needs a protective coating to prevent external factors like rain, moisture, and sunlight from damaging it.

You should keep giving retouches to the protective coating so that no area of the sheet is directly exposed to the external environment.



Before purchasing your Sandwich Sheet, you must have proper knowledge of its uses and benefits. This will help you obtain the best out of it for your application.

If a Sandwich Panel Sheet is not kept carefully and is not maintained, it loses its efficiency and purpose. Therefore, it shall be maintained well to increase the efficiency of insulation.


FAQs of Sandwich Sheet.

How Long Does a Sandwich Sheet Last?

While conventional roofs have a lifespan of about 10 years, on the other hand, a sandwich panel roofing can last for a lifetime without maintenance.


How Many Fasteners are Required to Install a Sandwich Sheet in a Sandwich Panel?

The number of screws and fasteners that are used to install a Sandwich Sheet in a sandwich panel depends upon the engineer and the stage of project preparation.

The construction material supplier can also give an estimate on the number of screws.


What is the Ratio of Fasteners per Square Metre for your Sandwich Sheet?

For your Sandwich Sheet, there should be 1.1 fasteners at every square meter. It will help to hold the whole assembly strongly together.


Can you Customize your Sandwich Sheet?

Yes, a Sandwich Sheet can be customized according to your application. You can get the most appropriate one in terms of material, size, thickness, and other properties.

It is better to get it customized so that there is no wastage of time and money.


The Cost of a Sandwich Sheet Depends on Which Factors?

The cost of a Sandwich Sheet depends upon the thickness and the insulating material with which it is used. Also, the application and use play an important role in costing.


Which Insulating Material Has Highest Thermal Conductivity Coefficient When Used with a Sandwich Sheet?

When a Sandwich Sheet is used with PIR core insulation, it provides the maximum thermal conductivity coefficient. Also, it is a budget-friendly and long-lasting option.


Are there any Size and Design Options in a Sandwich Sheet?

Yes, you can choose the required size and design of a Sandwich Sheet for your application. The sheets need to be cut into the required size, so you must ask for the size before delivery.

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