Sandwich Panels: Types, Advantages, and Applications – The Ultimate Guide

Sandwich panels are quickly becoming the popular choice of material in construction due to their lightweight design. Its strength and durability coupled with its insulation and thermal efficiency enable it to become the first option for business owners. We will explore the various things we ought to know about sandwich panels as we go along in this blog.

Sandwich Panels



What are Sandwich Panels?

Sandwich panels are panels made of a core and an outer material and used in construction as roofings and walls. It is a lightweight and durable material made by a combination of insulators and a thin outer layer.



What are Sandwich Panels Made of?

As stated earlier, sandwich panels are made up of two main components which are the outer layers and the core. The outer layer can be made of steel, aluminum, or even fiberglass while the core is made of a thick insulated material for insulation purposes. The common core materials are polyisocyanurate (PIR), polystyrene (EPS), or rockwool.



Types of Sandwich Panels:

Sandwich panels differ depending on factors such as core, outer layer, or facing material and the use and application. The following are some of the common types:


1.     Face Sheets

Face sheets are the outer layers of the sandwich panel which are made of thin materials. The following are some of the types of face sheets:


Metal Faced Panels

Metal Faced Panels are the most popular choice due to their strength and durability. It commonly uses steel or aluminum which is best for commercial and industrial buildings, and warehouses.

Metal Faced Panels


Fiberglass Faced Panels

Fiberglass is also a popular choice for cold storage and food processing facilities. It has exceptional resistance to chemicals, is lightweight, and flexible making it easy to mold into different shapes and sizes.


High-Density Plastic Faced Sandwich Panels

The less popular choice for commercial and industrial facilities but offers an advantage for clean rooms and laboratories because of its weight and great corrosion resistance.


2.     Core Materials

The core material of a sandwich panel is important for insulation purposes and weight. Here are some of the more common core options:


Polyisocyanurate (PIR) Core Panels:

Polyisocyanurate or PIR is suitable for roofings and walls because it provides great thermal insulation and fire resistance.

Polyisocyanurate (PIR) Core Sandwich Panels


Polyurethane (PU) Core Panels

Polyurethane or PU cores also offer good thermal insulation and fire resistance in the same way as PIR core panels. It may be cheaper than PU but has lower fire ratings.


Mineral Wool Core Panels:

Rockwool is more commonly used as partitions for walls and offer good fire-resistance and is also known as an excellent acoustic insulator.


Expanded Polystyrene (EPS)

Expanded Polystyrene has lower fire resistance than other materials but is relatively cheaper. It has good insulation properties so it can be a good alternative to the other core materials.

Expanded Polystyrene (EPS)


Extruded Polystyrene (XPS)

It works the same way as the Extended Polystyrene. it is also cheaper, has good insulation properties, and has higher moisture resistance which makes it slightly better than EPS.


Aluminum Honeycomb Core Panels

Out of all the core materials, this has the highest strength-to-weight ratio which is why it is the common choice for aircraft and architectural cladding.



What are the Advantages of Using Sandwich Panels?

Sandwich panels are increasingly popular in construction due to their numerous advantages. Stated below are some of the key benefits:


1.     Durability

These panels are designed to withstand elements and harsh weather conditions proving their durability. The core material and face sheets provide resistance to corrosion and physical impacts.


2.     Energy Efficiency

Most of the core materials in sandwich panels act as thermal insulators which reduce the consumption of energy in heating and cooling infrastructures.

Energy Efficiency


3.     Versatility

Sandwich panels have various applications. It can be used as roofs or walls in both commercial and industrial buildings and warehouses. They can also be used in cold storage facilities because of the good insulation they provide.


4.     Fast Installation

Since the panels are prefabricated, construction times are lessened because assembly is easier. It decreases the downtime and labor which saves money.


5.     Light Weight

The materials that constitute the panels weigh lighter than traditional brick or concrete which makes it easier to load, transport, and install.


6.     Fire Resistance

Some sandwich panels, specifically mineral wool cores provide excellent fire resistance which makes it ideal for businesses with strict fire safety regulations.

  Fire Resistance


7.     Low Maintenace

The materials that comprise the sandwich panels have good resistance to corrosion and damage from the elements which makes them last longer. The surfaces are also easy to maintain and clean and do not need chemicals or any special cleaning methods.


8.     Sound Insulation

The core material in sandwich panels also acts as an insulator and noise suppressor. It helps in creating a more comfortable and quieter environment.


9.     Sustainability

Some sandwich panels are made with recycled materials which makes it eco-friendly without sacrificing the quality. The materials provide excellent insulation and lower the damage and impact on the environment.


10.  Disaster Resilience

Since sandwich panels are designed with durability in mind, coupled with strong face sheets and core materials, they can easily withstand strong winds, heavy rains, or snowfalls, and in some cases, earthquakes. Sandwich panels can also be used as temporary shelters during disasters because of their characteristics.



Sandwich Panels Applications

The versatility of sandwich panels is one of its advantages. It can be used in a wide range of applications because of its strength, insulation properties, and a lot more. The following are just some of its applications:


1.       Cold Storage Facilities

The insulating characteristics of sandwich panels are ideal for cold storage facilities. It aids in maintaining low temperatures within the refrigeration units to prolong the shelf life of food items.

Cold Storage Facilities Sandwich Panels


2.       Prefabricated Buildings

Prefabricated buildings are made up of premade components and parts which is why sandwich panels become the perfect choice for roofs and walls due to their lightweight characteristic that allows for faster construction of structures.


3.       Roofing and Wall Cladding

The durability of sandwich panels enables them to serve as roofing and wall cladding, providing protection from harsh weather conditions and the elements.


4.       Partitions

Its lightweight characteristic allows it to be used as partitions to create individual spaces while also providing corrosion and fire resistance.

Partitions using sandwich panels


5.       Warehouses and Factories

The durability, insulation capability, and strength of sandwich panels make them suited for use in warehouses and factories. They can withstand the wear and tear of industrial environments while providing help in regulating temperatures.


6.       Offices, Workshops, Retail Stores and Showrooms

In various applications, sandwich panels can act as walls, ceilings, and roofings. It can also be used as backdrops or partitions while providing good insulation and resistance to create a comfortable and safe environment.




Sandwich panels provide many uses to any kind of business. It is so versatile that almost all types of industries use it for different purposes. Its characteristics provide business owners with several advantages that may help with their business. It is the best choice as a material for walls, roofs, ceilings, partitions, and a lot more.


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