Excellent Insulation Performance for Cold Room panels
Cold Room Panels
  • Sunnyda cold room panels are high-performance insulation materials, ideal for maintaining and controlling the temperature in refrigerated spaces. They offer an excellent cost-effective solution for your cooling needs.
  • Cold Room Insulated Panel
  • Cold Room Insulated PU Sandwich Panel Wall
  • Cold Room Insulating PU Panels
  • coldroom PIR panel
  • Cold Room Insulated Panel
  • Cold Room Insulated PU Sandwich Panel Wall
  • Cold Room Insulating PU Panels
  • coldroom PIR panel

Cold Room Panels

  • High thermal conductivity
  • Excellent airtight and watertight properties
  • Quick installation
  • Customizable to fit your dimensions
  • A variety of surface options are available

Your Premier Cold Room Panels Manufacturer in China

The Sunnyda cold room panels feature robust construction with two layers of corrosion-resistant pre-painted galvanized steel sheets (PPGI), encapsulating a core of high-pressure injected, single-application PIR (polyisocyanurate) or PUR (polyurethane) foam. This creates a high-strength insulation panel with superior thermal performance. 

The interlocking tongue-and-groove system at the joints acts as a thermal break, ensuring sustained interior low temperatures and reducing energy consumption, which in turn lowers operational costs significantly. Our high-quality materials come with a warranty ranging from 1 to 5 years, providing a strong assurance of long-term usability.

Additionally, we offer another type of manually foamed cam lock sandwich panel, which incorporates durable zinc-coated cam locks embedded within. Coupled with the tongue-and-groove system, this design enhances the sealing effectiveness. The density of the PIR and PUR can reach 40-42kg/m3, with custom options available exceeding 45kg/m3 to meet higher standards.

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Features of Cold Room Panel

The Sunnyda cold room panels are designed for climate control and are suitable for a wide range of temperature zones. Whether you need them for positive or negative temperature environments, these panels can operate within a temperature range of -40ºC to +40ºC, making them perfect for temperature-sensitive settings.
Excellent Insulation Performance
Excellent Insulation Performance
Sunnyda cold room panels offer exceptional thermal performance, enhancing the insulation efficiency of your cold room by 8-10% compared to traditional manufacturing methods. This will further reduce your operating costs!
High Corrosion Resistance
Sunnyda cold room panels are made with high-galvanized color steel sheets, featuring a galvanization standard of 40g-150g and an anti-corrosion paint layer thickness of 20-40 microns. You can choose from optional stainless steel sheets, as well as aluminum sheets. These features ensure your cold room remains durable and long-lasting.
Fire Resistance
Fire Resistance
Sunnyda offers a variety of cold room panels with different fire protection ratings. PIR, one of our offerings, is a highly efficient material rated B2 for fire resistance and also meets Australia's BAL-29 requirements. We provide pre-shipment fire test videos to ensure that your use is risk-free.

Application of Cold Room Panel

Sunnyda cold room panels are widely used across various sectors, primarily for walls, partitions, ceilings, and roofing. These panels are extensively utilized in cold room facilities to maintain and control temperatures to meet operational standards, commonly ranging from -25ºC to +10ºC. This temperature control extends the storage life of perishable products, ensuring they remain fresher for longer.

Sunnyda’s cold room sandwich panels are typically used in facilities such as food cold rooms, pharmaceutical and medical cold rooms, flower cold storages, cold chain warehouses, poultry farms, seafood quick-freeze facilities, fruit and vegetable storages, slaughterhouses, meat processing plants, wineries, dairy factories, ice cream companies, beverage plants, quick-freeze tunnels, food processing plants, container cold chain trucks, cold room trailers, and in public areas of hotels, motels, and supermarkets.

Application of Cold Room Panel
flat large ribbed and smallcorrugated

Surface Option

Sunnyda cold room panels are available in three surface styles: flat, large ribbed, and small corrugated. The standard surface material is high-galvanized color steel sheets, with thickness options including 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, and up to 1.0mm.

You can also opt for stainless steel sheets in grades 304 or 316. Additionally, embossed aluminum sheets and FRP (Fiber Reinforced Plastic) are excellent choices. For a more economical option, aluminum foil paper can be used as the surface material. 

All materials are waterproof, corrosion-resistant, and made of lightweight materials with a long service life.

Color Option

Sunnyda cold room panels can be customized in various colors according to the international RAL color chart. 

The surface is made of high-strength, corrosion-resistant pre-coated steel sheets. The base layer consists of cold-rolled steel, treated sequentially with a high-zinc coating, a chemical conversion layer, a primer layer, and a top coat of paint. 

The standard paint used is Polyester, with higher-grade options available, such as PVDF, Plastisol, HDP, and PVC. 

Color Option RAL color card
safety food

Health Standards

The double-sided antibacterial Sunnyda cold room panels provide an effective solution for food safety. They are resistant to most oils, as well as some chemicals and solvents, making them the most cost-effective method for reducing cross-contamination and inhibiting bacterial growth. 

The organic coating on the panel surface is the latest antibacterial technology from color steel manufacturers, offering comprehensive protection for the items stored in your cold room.

Controlled Environments

The use of pentane in the production process of Sunnyda cold room panels has significantly improved the polyurethane foaming process. Compared to traditional polyurethane foaming methods, it provides greater thermal resistance and represents a substantial step forward in environmental protection.

The cold room sandwich panel’s robust tongue-and-groove interlocking system ensures tight connections without leaks, minimizing thermal bridging. This results in optimized energy efficiency and thermal control in cold room facilities, providing an outstanding solution for maintaining energy conservation.

Controlled Environments
fast installation

Fast Installation

Many contractors face challenges with installation, but Sunnyda cold room panels are designed to solve these issues. We can be custom-made to fit the specific dimensions required on-site and can be designed for modular assembly. 

The panels can be installed vertically or horizontally without the need for on-site cutting, making the installation process simpler, faster, and more efficient. This approach significantly reduces labor costs, saving you a considerable amount of money.

Meet Your Standard

Sunnyda cold room panels meet the requirements of CE, FM, FDA, EUSCF, and EN14509 A.10 standards, as well as Australian building codes. 

We can provide third-party laboratory test reports for your panels, such as SGS certification reports, ensuring the highest quality and compliance with international standards.

Water-tightness and Vapor-tightness.

Water-tightness and Vapor-tightness.

The airtightness and watertightness of Sunnyda cold room panels are crucial indicators, with most leakage points occurring at the panel joints. We have two manufacturing processes that perfectly address this issue.

Automated One-Piece Panels: These panels are produced using automated machinery, featuring an integrated tongue-and-groove interlocking system at the joints, ensuring a tighter bond between the panels.

Handcrafted Cam Lock Panels: These panels incorporate a tongue-and-groove system and are additionally reinforced with cam locks inside, providing extra durability.

Moreover, high-weather-resistant sealants at the seams are also essential for ensuring a reliable and long-lasting seal.

Load-bearing Capacity

Sunnyda cold room panels have high load-bearing capacity, making them suitable for various applications. For instance, refrigeration equipment for cold rooms can be hung directly on these panels without causing any deformation over time. 

This ensures long-term durability and reliability, even under heavy loads.

Load-bearing Capacity
R-Value for sandwich panel


Sunnyda cold room panels offer high R-values, typically ranging from 5 to 8.8 per inch (2.54 cm). The R-value varies depending on the material used. 

For instance, PUR panels generally have an R-value of 5 to 7.2 per inch (2.54 cm), while PIR panels usually range from 6.5 to 8.8 per inch (2.54 cm). 

These measurements are based on a temperature of 55°F. The higher the R-value, the better the insulation performance and thermal resistance. 

We can provide high-performance materials to meet the needs of your cold room facility.

Custom Made

Sunnyda cold room panels can be customized in terms of width, thickness, and length to meet specific requirements. 

The length can be tailored from 0.5m to 18m. For international clients, panels intended for sea container shipping must adhere to the shipping standard length of 12 meters. 

Thickness options range from 1 inch to 8 inches, with common thicknesses being 50mm, 75mm, 100mm, 120mm, 150mm, 200mm, and 250mm. 

The width is also customizable, ranging from 24 inches to 44 inches, with the standard width typically being 44 inches (1120mm).

Cold Room PUF Panels
Thickness [mm] 50 75 100 120 150 180 200 250
Width [mm] 1120mm (1000-1120mm)
Length [mm] 1000 ~ 19800mm
Weight [kg/m²] Base on 0.5mm steel sheet 10.53 11.33 12.53 13.33 14.53 15.72 16.85 18.96
Heat transfer coefficient Uc [W/m²K] 0.41 0.26 0.21 0.18 0.14 0.12 0.11 0.085
Fire Rating B1 (PIR) & B2 (PUR)
R-value (m²K/W) Base on +15℃ 1.426 2.038 2.659 3.278 3.909 4.562 5.169 6.414
R-value (m²K/W) Base on +30℃ 1.345 1.939 2.527 3.142 3.719 4.236 4.924 6.087
Applicable cold room temperature (ºC) 5ºC to 40ºC 0ºC to 40ºC -15ºC to 40ºC -20ºC to 40ºC -25ºC to 40ºC -30ºC to 40ºC -35ºC to 40ºC -40ºC to 40ºC
Cold Room Panels Manufacturer in China
Customize Your Cold Room Panel

No matter what specific products you are storing in your cold room, we will customize a Sunnyda cold room panel that perfectly suits your requirements.

  • The Sunnyda cold room PU panel has been a good addition to my restaurant walk-in-freezer. I like how it is possible to keep the food in the cold room at the right temperature. Excellent insulation also ensures I never have to worry about the perishable ingredients staying fresh. – Eva 

  • I like how it is possible to have the best color finish for my cold room panels. Yes, Sunnyda has the option of customizing the color of cold room panels that you would want. For me, I chose to use the brand colors. The panels look so good. – Frederick 

  • The structural strength of the cold room panels from Sunnya is on another level. The manufacturer knows the importance of making panels that can withstand heavy loads. I have had my panels in place for two years, and they still look good. – Sheila

  • Our logistics warehouse has been in good condition since we set it up last year. The cold room panels have maintained their shape and performance. There is nothing to worry about. – Carrie

Your Cold Room Panel Solutions

Cold Room Panel Roll Forming Production Line
Cold Room Panel Roll Forming Production Line
Electrical PLC Control Cold Room Panel Line
Electrical PLC Control Cold Room Panel Line
Cold Room Insulated Wall Roof Panels
Cold Room Insulated Wall Roof Panels
Polyurethane Panel Used for Cold Room
Polyurethane Panel Used for Cold Room
Cold Room Polyurethane Insulation Panel
Cold Room Polyurethane Insulation Panel
Cold Room Polyurethane Sandwich Panels
Cold Room Polyurethane Sandwich Panels
Cold Room PU PIR Sandwich Panel
Cold Room PU PIR Sandwich Panel
Customized Modular Cold Room Panels
Customized Modular Cold Room Panels
Exterior PU Cold Room Panels
Exterior PU Cold Room Panels
Insulated Wall Panels Cold Room
Insulated Wall Panels Cold Room
Insulating PUF Panel For Cold Storage Room
Insulating PUF Panel For Cold Storage Room
Insulation Roof Cold Room Panel
Insulation Roof Cold Room Panel
Polyurethane Foam PU Cold Room Panels
Polyurethane Foam PU Cold Room Panels
Polyurethane Thermal Insulated Sandwich Panel Cold Room
Polyurethane Thermal Insulated Sandwich Panel Cold Room
PU Insulated Sandwich Panel for Cold Room
PU Insulated Sandwich Panel for Cold Room
PU Insulated Wall for Cold Room Panels
PU Insulated Wall for Cold Room Panels
PU Roof Cold Room Sandwich Panel
PU Roof Cold Room Sandwich Panel
Roof Panel For Cold Room Storage
Roof Panel For Cold Room Storage
Thermal Insulated Cold Room Panels
Thermal Insulated Cold Room Panels
Manufacturer of Polyurethane Cold Room Sandwich Panels
Cold Room Polyurethane Sandwich Panels

Cold Room Panels: FAQs

Having the right cold room insulation panels plays an important part in the performance of the cold room. Sunnyda specializes in making the best panels to use as cold room walls and take care of your cold needs. The best part is that you get the modular cold room panels too as part of the design. 

Below are the FAQs on cold room panels you should know right now. 

What are the types of joints used in making cold room panels for sale?

When it comes to the success of your installation, these joints can make or break the process.

There is no excuse for not being familiar with the many types of joints available for PU and other panels in a cold room. You can make better selections and get the results you want if you have enough panel joints.

Let’s take a look at each one:

Concealed fixation joint 

Exterior cladding panels are the most prevalent place to find concealed fastening seams. The panels are fastened together with invisible fasteners. There will be no visible screws after the panels are attached.

It’s easy to use the hidden fixing joint. It’s where the tongue and groove connect. With an overlapping design, an insulated panel shields it. 

Visible fixation joint 

The visible fixation joint is yet another type of tongue and groove joint that is well-known. On the other hand, the focus is glaringly visible in this joint. As a result of its dependability and the convenience with which it can be installed, it is utilized in a wide variety of buildings and cold rooms.

During the installation of a visible fixation joint, the screws should not be overtightened, since doing so could damage the surface of the panel. When creating a cold chamber, you have the option of using either a visible fixation joint or the labyrinth junction illustrated in the figure.

Visible fixation cold room panel joint

The visible fixation joint in the cold room is referred to as the visible fixation cold-room joint. This material is commonly used to make polyurethane panels for cold rooms. With an intricate design, the Labyrinth joint was named. The tongue and groove is more stable because of the labyrinth connection and the PU panel for cold room. Thus, cold room air leaks are avoided.

In this junction, you may want to experiment with several types of sealants, depending on the temperature and environment. Cold-room seams that are visible in cold room PU panels for sale used in cold rooms have additional advantages, such as the following:

  • Because of its unique design, there is less possibility of air leakage.
  • Frozen parts of the labyrinth are walled off from the outside world. Decrease in the amount of condensate as a result
  • This type of joint aids in the proper sealing of the cold room, preserving the freshness of the products for clients.
  • Improved joints would help if your items are kept fresher and have a better reputation in the industry.

Hermetic joint

The best hermeticity can be achieved using the hermetic joint. Cold room PUF panel suppliers also utilize it to seal the cold room fully. It has a joint between two females.

Additional flashing and building site space are required by the installer to achieve proper hermetic junction installation. The best result is achieved when the entire wall seems to be a single panel sandwich panel for cold rooms with no visible joints. Airtightness and freshness are important considerations when packaging a product.

What are the commonly used types of cold room panels?

Each structure has a specific function and set of needs. Choosing the right cold room panel for your project depends on your needs in terms of thermal, acoustic, water, and fire-resistant features. Make sure you choose the right insulating core for your sandwich panel to get the most out of it.

In order to get the right insulation for your construction, you can use the cold panel selection table from the Sunnyda catalog.

Polyurethane (PUR)

It is manufactured by mixing polyol and isocyanate in a high-pressure mixture with catalytic components.

Polyurethane’s closed-cell structure provides both thermal and water resistance. Bacteria were not found in any kind! One of its mechanical advantages is its high compressive strength.

Polyisocyanurate (PIR)

An important macromolecular structure known as polyisocyanurate is generated during the foam’s chemical reaction. In terms of fire resistance, polyisocyanurate rigid foam is superior to polyurethane. If a fire breaks out, polyurethane gives up more smoke. Well, they are still strong insulated wall panels cold rooms could use. 

Rockwool or Mineral Wool

Mineral wool is the preferred word for the fibers produced by melting inorganic rocks and other inorganic oxides. Due to its fibrous nature, an open-cell mineral wool product is perfect for sound and fire resistance. The thermal resistance of PIR and PUR is superior.

In our fully automated manufacturing facilities, mineral wool cold room wall panels are sliced perpendicular to their surface. Consequently, the pressure resistance and mechanical value of the panel have been improved.

It’s ideal for structures that need strong sound insulation, are susceptible to fire, or contain flammable/explosive materials.

Expanded Polystyrene (EPS)

Thermoplastic EPS is created from petroleum-based expanded polystyrene. To begin, the micro-granular polystyrene raw material is inflated with water vapor. The granules are inflated using pentane gas. Polystyrene granules make a tight bond and stick to the mold when expanded. Expanded polystyrene may now be cut into sheets after being made into blocks.

Pentane gas takes the place of air at the conclusion. Because of the dry, impermeable air trapped in their tiny pores, EPS sheets are excellent insulators.

Expanded polystyrene (EPS) is the lightest and most effective thermal insulating material available (EPS). You can get different cold room panel thickness with such materials. 

Neopor cold room panels

Neopor-insulated panels are preferable to polystyrene ones (EPS). In the same manner, as before, graphite replaces wood as the raw material. In comparison to EPS, it has a higher R-value per inch (4.5).

The less permeable Neopor panels, on the other hand, enable optimal performance and cost savings.

Compressed straw cole cold room panels 

Environmentally friendly straw IPs are becoming increasingly popular.

These coolroom panels are made from agricultural waste straw. As a result, the panels with lower R-values are heavier. Many cold room panel manufacturers are now trying to adopt such new methods right now. 


Which is better for a cold room between polystyrene and rock wool panels?

A fire-resistant sandwich panel’s best material is rock wool. All that’s needed are some screws and a screwdriver for installation, and you’ll be done in a jiffy. At the national level, the goods have passed tests for product quality and the use of fire-resistant ornamental materials.

Upper and lower steel plates are 0.4-0.8 mm thick. You have the option of using stainless steel, coated steel, or galvanized steel.

It’s common to utilize a core of rock wool that weighs 120-150 kg/m2.

Surface protection for steel plates with a polymer-based PVC film.

In today’s construction, thermal insulation is a new building material. Rock wool board and new polystyrene panels are also common in the thermal insulation business. If rock wool sandwich panels were replaced by polystyrene sandwich panels, which would be the better option?

  • Retardant to Flammability

Combustible due to the organic polymers used in the construction of EPS. Construction raises a number of fire safety issues and is inherently more fire-prone. The flammable faults can be efficiently addressed, but not eliminated. Inorganic basalt is used to construct the rock wool board. Combustion index A1 means there are no fire hazards in construction.

  • The rate at which water seeps into the insulation

Rock wool, on the other hand, is an inorganic fiber with a high water absorption rate, and polyphenyl board is a foamy plastic with a low water absorption rate. Alternatively, you can apply a hydrophobic layer of bonded mortar and plastering mortar to the surface of rock wool board.

  • Setting up

Polystyrene and rock wool sandwich panels can be bonded using the point frame method; however, because rock wool is a fibrous plate, the heavier bonding cement can’t be used, hence the full bonding process is employed when needed. At least 40% of the surface must be bonded. A minimum of seven anchorage nails per square should be used for the first seven layers of the rock wool panel, and nine anchorage nails per square for the remaining layers.


How do different cores of cold room panels compare?

Expanded polystyrene (XPS) and polyethylene terephthalate (PET) can be used to create insulation cores (extruded polystyrene). Styrene is the starting point for both EPS and XPS, two thermoplastic polymers with similar characteristics. Due to its greater density, XPS insulation cores are harder and more durable than EPS insulation cores. The thermal conductivity of EPS is 0.038W/mK.

The lambda value of XPS is higher than that of EPS (0.033W/mK). EPS and XPS will not burn in the presence of heat. Because of this, sandwich panels with EPS insulation cores aren’t as moisture resistant as those with XPS cores.

Mineral wool, particularly stone wool, is used as an insulating core in sandwich panels. Stone becomes malleable and can be spun into yarn when heated. Non-combustible stone wool panels are ideal for fire prevention. 

Thermal conductivity performance ranges from 0.03-0.043W/mK, making it the weakest of all core kinds. In order to get the same U value as PIR panels, stone wool panels must be nearly two times as thick as those of that material. 

Bulky, heavy panels are necessary for the construction of structurally stable mineral wool panels, which necessitate high densities (typically 100kg/m3 or more). It’s also worth noting that the open cell structure of mineral wool panels contributes to their lower thermal performance.

As well as other polymers, PUR (polyurethane) and PIR (polyisocyanurate) are frequently utilized in the insulating cores of sandwich panels (polyisocyanurate). Foams that are rigid and non-melting are incorporated in both items.

A wide range of formulas is covered by the names “PUR” and “PIR.” A full-scale fire test, such as those conducted by the insurance industry, is the only way to accurately assess PIR’s fire performance (FM & LPCB). PIR core panel performance is best evaluated through large-scale testing. In terms of heat conductivity, both PUR and PIR have values of lambda of 0.023W/mK and 0.020–0.022W/mK, respectively. 

In the event of a fire, sandwich panels with PIR insulation cores that have been certified by the insurance industry perform better. Both PUR and PIR display great moisture resistance due to their closed-cell structures.



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