Jul. 07, 2025
A sandwich panel, also called a composite panel, is a structure consisting of three individual elements: a low-density core material and two outer facings bonded to the core. The core material is responsible for providing stiffness to the panel, while the outer coatings, typically metal, such as steel or aluminum, provide durability and strength to the panel. Sandwich panels are widely used in the construction industry for roofing, cladding and insulation, due to their light weight, high structural performance and excellent insulating properties.
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Sandwich panels are available in a range of types, each adapted to different structural and functional demands. Some of the most common variants are as follows:
– Roof panels: Specifically designed for overhead installations, these panels offer enhanced water drainage systems, anti-freeze properties and UV-resistant exterior coatings to ensure durability and weather protection.
– Wall panels: Designed to provide effective thermal insulation and aesthetic versatility to building facades, interior walls and partition systems. They can have different finishes, profiles and colors to complement architectural designs.
– Cold Storage Panels: Optimized for low-temperature environments, such as food factories and cold stores, these panels offer superior thermal performance and increased moisture resistance to preserve product quality.
– Fire-resistant panels: Constructed with flame-retardant properties to improve building safety and meet fire protection standards. These panels are essential to minimize the spread of fire and ensure occupant safety in commercial and industrial structures.
The versatility of sandwich panels allows them to be used in a wide range of applications in various sectors. From commercial and industrial buildings to residential structures, these panels serve as an integral component in the construction of:
– Industrial buildings and factories
– Agricultural buildings, such as barns and warehouses
– Modular construction and prefabricated structures
– Clean rooms and controlled environments
– Sports facilities, such as sports centers and gymnasiums
– Commercial and retail developments
– Single-family homes and residential projects
– Refrigerated warehouses and cold stores
Sandwich panel installation requires adherence to industry best practices and relevant building codes to ensure structural stability, weather resistance and long-term performance. Proper installation is crucial to maximize the potential of sandwich panels for thermal efficiency, air and moisture control and overall building integrity. During the installation process, the following considerations must be taken into account:
– Substrate Preparation: Ensure that the underlying structure or substrate is in good condition, level and free of debris or protrusions that may affect the fit and performance of the panels.
– Sealant application: Employ high quality sealants and gaskets to create an airtight seal at the joints and perimeter of the panels, preventing water ingress and air leakage.
– Fastening and support systems: Use compatible and strong fastening systems, such as concealed hooks or through bolts, to secure the panels to the structural framing and allow for thermal movement and wind loads.
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– Safety measures: Apply appropriate safety protocols during installation, including the use of personal protective equipment and fall protection systems for working at heights.
– Professional expertise: Hire experienced and certified installation crews or contractors to ensure accuracy and compliance with manufacturer’s guidelines.
We know the advantages of the insulated panel construction system, but do we know how to choose the most appropriate insulated panel for our building project? In this post, you will find a series of questions you should ask yourself in order to choose the most suitable insulated panels for your building. The usage of the building, the climate, the temperature conditions, proximity to the sea and extreme conditions are some of the aspects to think about. Considering all these questions, you will be able to define materials, finishes, and thicknesses for the panels you use.
Insulated panels are a material that over time has gained market visibility over other materials and, given this growth, it has stopped being a product difficult to find or a rejected innovation (like most innovations). Increasingly, builders are leaning more towards using the panels for their projects and these are no longer limited to those in the industrial sector, as you may think since panels are found in buildings as diverse as schools, churches, gyms, sports centers, transport terminals, and homes.
However, deciding which sandwich panel to use for each project is a task for which the technical team must take due action. The inexpensive option will not always be the best (e.g. polystyrene) and, even worse, it could be counterproductive, affecting everything from the building’s efficiency to putting the safety of its users at risk. Taking this into account, there are a number of aspects that must be taken into account. Here are the most important ones.
Depending on the purpose of the property, panels for both ceiling and wall will vary. For example, office buildings tend to have a less “rough” use than product warehouses.
These are aspects that have a relation to the safety of the building. Thus, the following should be taken into account:
– The characteristics of the panel in relation to the resistance to snow loads on the roof for those locations with harsh winters.
– Wind resistance should always be taken into account, especially for buildings of considerable height and those in coastal locations or exposed to hurricanes and similar phenomena.
– Water tightness, something that has more to do with the joints of the panels and the quality (brand) of the products to acquire.
– Main and secondary structures of the building
The climate is going to be a determining factor on the panels to install, for example, coastal locations usually have a very salty air, something that is essential to define what type of paint will be used for the panel. Also, wind, snow, rain, and humidity have to be analyzed in order to determine the best option.
The thermal factor is crucial and determined by the type of foam core material and its thickness. For example, you will not be able to use the same type of panel for a furniture store as for a cold warehouse for salmon. Thus, if high thermal insulation is desired, a PIR panel is one of the primary options, while mineral wool may not be as adequate.
Fire resistance is a very important issue. Depending on each country or region, there are minimum regulations to comply with. Under equal conditions and dimensions, rock wool panels perform better when it comes to fire in comparison to PIR or PUR.
Sound insulation. This will determine the thickness of the panel. In general, rock wool tends to have better sound insulation properties.
Insulated metal panels give the facilities a modern, industrial, and maybe tough appearance to a certain extent, something that may not be desired for homes, although this will depend on the design capabilities of the architect. Still, there are alternatives such as corten steel and wood panels, which allow a cozier yet modern appearance.
It is highly relevant to recall that the ecological aspects should not be forgotten, since insulating panels give the building important advantages in this regard, due to their low impact on the environment, reduced energy consumption, and recycling properties. Moreover, it has to be analyzed if a certification like LEED or another would be desired, not only because of the financial and image benefits these permit but also because the planet needs this more than ever!
These are the most significant matters to consider when designing a building with insulated panel covers, however, there are others that require evaluation according to the provider chosen, such as their experience with this type of materials, technical support, quality of products, and the ability to provide additional services like logistics and detailing. We cover these in other posts.
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