Sandwich Panels Installation

Sandwich panels typically consist of two external layers of metal and a foam core in between, resembling a sandwich. These panels are widely used for constructing building enclosures, including wall panels, roof panels, and floor panels. Compared to traditional construction methods, installing sandwich panels is simpler and faster. So, how do you correctly install sandwich panels? This article will provide a detailed guide on the installation steps and important considerations.

Sandwich Panels

Preparation Before Installation

Preparation Before Installation

To ensure a smooth installation process, it is essential to carefully plan and execute the preparatory work, following the installation steps diligently. After installing the sandwich panels, testing and inspection are necessary to ensure they are ready for use.

Before installing sandwich panels, you need to prepare in four key areas: site preparation, material preparation, equipment preparation, and personnel preparation.

Site Preparation

Clear the construction site to ensure it is clean, level, and free of debris, meeting the requirements for installation.

Material Preparation

According to the blueprints, inventory the materials needed for installation, including sandwich panels, bolts and screws, sealant, aluminum profiles, and other necessary items. Inspect the sandwich panels and auxiliary materials to ensure they are undamaged and not deformed. Replace any damaged materials promptly.

Equipment and Personnel Preparation

Equipment and Personnel Preparation

Determine the number of installation personnel and the necessary tools based on the project’s scale. Required tools include measuring tapes, electric drills, wrenches, screwdrivers, cutting machines, cranes, and lift ladders.

Installation Steps

Once the preparation is complete, proceed to the installation phase of the sandwich panels. Determine the installation sequence based on the design drawings and installation requirements. Typically, the installation follows a sequence from the floor panels to the wall panels and then to the roof panels.

Installing from the bottom up ensures that each panel can be securely placed on the panel below it. The lower panels provide support and prevent the upper panels from shifting or sliding during installation. This method enhances structural stability. Additionally, installing from the bottom up makes it easier to adjust each panel’s direction, position, and angle, ensuring that each layer of panels is level and vertical. This approach ensures the final walls and roof are flat and properly aligned.

Installation of Floor Panels

Installation of Floor Panels

According to the design drawings, lay the floor panels flat on a level surface, adjusting their position and direction as needed. Connect each floor panel sequentially. Typically, floor panels can be secured together using locking hooks or sealant. During installation, frequently check the levelness of the floor panels, using a level for measurement. Ensure the installed floor panels are flat and secure.

Installation of Wall Panels

According to the design drawings, prepare the wall panels for installation. Start from the corner positions when installing the wall panels. Ensure that the bottom of the first wall panel inserts into the groove of the floor panel. After installation, check its verticality and flatness. Then, sequentially connect each wall panel. During installation, frequently check the verticality and flatness of the wall surface. Adjust the position and direction of the wall panels promptly to ensure the installed walls are sturdy and not tilted.

After installation, seal the joints and corners of the wall panels using sealant, typically applying sealant to fill gaps. If necessary, cover the corners of the walls and joints between the walls and floor panels with aluminum profiles. This not only enhances aesthetics but also improves sealing.

Depending on requirements, openings can be made in the walls for installing doors and windows. When installing doors and windows, ensure they fit tightly against the walls. Seal the joints between the doors/windows and the walls with sealant to ensure proper sealing.

Installation of Roof Panels

Installation of Roof Panels

Roof panels are typically installed from one end to the other. For small buildings with smaller spans, installation is straightforward and quick. However, for large buildings, a wide span of roof panels can affect structural stability. This may cause sagging or deformation after installation and reduce resistance to wind forces.

Therefore, roof panels for large buildings are often installed in sections and supported with suspension rods to prevent sagging or deformation. This ensures they can withstand wind forces effectively.

Regardless of building size, seal the joints between roof panels properly. After installing roof panels, consider using appropriate aluminum profiles to enhance aesthetics on exposed parts of the roof panels, as needed.

Installation Considerations

Overall, when installing sandwich panels, it’s crucial to keep the following points in mind:

Check Verticality and Levelness 

Check Verticality and Levelness 

Throughout the installation process, monitor the condition of the panels closely. Use a level to check the verticality and levelness of the sandwich panels. Adjust the position and direction of the panels promptly to ensure the overall structure is flat and not tilted after installation.

Protect the Metal Surface of Sandwich Panels

The metal surfaces of sandwich panels are usually coated with a corrosion-resistant layer. If this layer is damaged, the panels’ corrosion resistance will decrease, shortening their lifespan. Therefore, during installation, handle the sandwich panels carefully to avoid scratching or damaging the metal surface, preventing rust and maintaining their longevity.

Ensure Proper Sealing

Properly seal the joints between sandwich panels. Effective sealing provides waterproofing and moisture resistance, and it also reduces thermal bridging. In cold rooms, sealing is especially important. Good sealing prevents cold air from leaking, improves refrigeration efficiency, and reduces energy consumption.

Post-Installation Inspection

Post-Installation Inspection

After all the sandwich panels are installed, conduct a thorough inspection to ensure that the panels are tightly and securely joined. The installation should only be put into use after being approved by professional inspectors.


This article covered the steps and considerations for installing sandwich panels. Proper installation not only ensures safety during the process but also guarantees the stability and longevity of the building structure.

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