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An EPS sandwich panel, or expanded polystyrene sandwich panel, is a prefabricated building material comprising two layers of steel sheets and an inner core of EPS foam. These panels are extensively used in constructing walls, roofs, and cold storage. EPS panels are popular for their lightweight, insulated, and cost-effective nature.
These panels are divided into different types based on their usage. Let's take a look at the various types of EPS panels:
Roof Sandwich Panel:
Roof EPS panels are specifically designed to be installed on roofs. They have a core thickness of 50mm to 200mm. The core material of these panels can be polyurethane, EPS, or PIR. The top steel sheet is usually galvanized steel or colored-coated steel. Roof EPS panels are popular for their excellent thermal insulation, durability, and easy installation.
Wall EPS Panel:
These panels are specifically designed for wall applications. They have a core thickness ranging from 50mm to 150mm. Their core material is normally EPS foam. Wall EPS panels are popular for their outstanding thermal insulation, fire resistance, and structural integrity.
Cold Room Panel:
Cold room EPS panels are designed to create temperature-controlled spaces like walk-in coolers and freezers. They have a core thickness of 75mm to 150mm. The core material is usually high-density EPS foam or polyurethane. Cold room panels are well known for their high R-value, tight seals, and moisture resistance.
Freon Panel:
Freon EPS panels are specifically designed for refrigeration units. They have a core thickness of 75mm to 150mm. The core material of these panels is Freon gas. Freon panels are popular for their excellent insulation properties and lightweight nature.
Solar Sandwich Panel:
Solar EPS panels are designed to accommodate solar panels. They normally have a core thickness of 50mm to 150mm. The core material of these panels is usually EPS foam. Solar panels are popular for their strength, UV resistance, and ability to support solar energy generation.
Thickness Based Classification:
Thin Panels: These panels are up to 50mm thick and are used in applications where insulation is not a priority, such as internal walls.
Standard Panels: These panels are between 50mm and 100mm thick. They are used in walls and roofs where insulation, structural integrity, and cost-effectiveness are required.
Thick Panels: These panels are over 100mm thick. They are used in applications that require high insulation values, like cold storage and refrigerated trucks.
Sandwich panels consist of two skins and a core. The core is expanded polystyrene (EPS) which provides insulation. The core is glued between two metal sheets.
There are many applications of EPS sandwich panels in construction, and they are used to build residential and commercial structures. This is because they are energy efficient and affordable. Let’s look at some of the scenarios where EPS sandwich panels are used.
Commercial Construction
Decorative wall panels make a building look aesthetically pleasing. EPS panels are used as decorative wall panels in commercial buildings. They come in different colors, textures, and shapes to match the desired design.
Roof insulation is important in commercial buildings to maintain temperature and reduce energy costs. EPS panels are used as roofing panels. They are lightweight, easy to install, and provide good insulation. They help create flat or sloped roofs in commercial structures.
Residential Construction
EPS sandwich panels are used as exterior wall panels in residential construction. They provide structural support, insulation, and a finished surface. These panels can be customized to look like traditional wood or brick.
Basements are below ground and need good insulation. EPS panels are used as insulation panels for foundations. They are resistant to moisture and provide good insulation. This helps create a dry and energy-efficient basement.
Garage walls need good insulation and structural support. EPS panels are used to build garages. They are easy to install and provide good insulation. These panels can be customized to look like traditional wood or brick.
Temporary Structures
Trade shows and exhibitions need temporary structures that are easy to assemble and disassemble. EPS panels are used to build exhibition booths. They are lightweight and provide customizable walls and roofs.
Construction sites need temporary offices and storage units. EPS panels are used to build these structures. They are easy to assemble and disassemble and provide good insulation and structural support.
Specialized Applications
Cold storage facilities need insulated walls and ceilings to maintain low temperatures. EPS panels are used to build walk-in coolers and freezers. They provide good insulation and are easy to assemble.
Healthcare facilities need insulated walls and ceilings to maintain a sterile environment. EPS panels are used to build clinics, operating rooms, and storage areas. They are easy to clean and provide good insulation.
When buying EPS sandwich panels in bulk, it is important to consider several factors to ensure the product meets the intended construction needs.
Thermal insulation
Buyers should consider the thermal conductivity of the EPS panels. The panels have a wide range of applications that require different levels of thermal insulation. Therefore, buyers should determine the level of thermal insulation required and choose accordingly. The thermal conductivity is expressed in watts per meter Kelvin (W/m2K). The lower the number is, the better the insulation it provides.
Panel thickness
Another important factor to consider is the thickness of the panels. The thickness of the panels affects the thermal performance. The panel thickness usually ranges from 50 to 150 mm. Determining the appropriate thickness will ensure that the panels offer optimal thermal insulation.
Compressive strength
The compressive strength of the EPS determines its durability and resistance to deformation. Buyers should select panels with high compressive strength to ensure the durability of the structure.
Density
The density of the EPS panels affects their insulation value. Lower density panels have better insulation properties. When buying in bulk, buyers should consider the density of the panels to ensure they are suitable for the intended use.
Quality of steel
The quality of the steel used in the construction of the panels affects their longevity. Buyers should choose panels constructed with high-quality steel. The steel usually comes coated with materials like zinc to prevent corrosion.
Coating material
The coating material used in the construction of EPS panels affects their durability and longevity. Consider coated materials like galvanized steel, which offer better corrosion resistance.
Panel length and width
Q1: What is the lifespan of EPS sandwich panels?
A1: EPS sandwich panels can last for 30-50 years. However, this entirely depends on the installation process and the environmental factors. They are durable panels and, as such, can last for several decades.
Q2: Are EPS panels waterproof?
A2: EPS panels are not waterproof. However, they have a high resistance level to water. They are usually used in the construction industry to build warehouses, residential homes, and storage facilities.
Q3: What is the fire rating of EPS panels?
A3: EPS panels have a fire rating of 1-4 hours. The fire rating indicates how long the panel can withstand fire exposure. EPS panels are not flammable, but they can melt when exposed to high levels of fire.