Insulated PU corrugated iron: Structure, advantages, applications and price quotes 2026

PU insulated corrugated iron is a modern construction material made up of three main layers: corrugated iron sheet made of Al-Zn alloy coated steel, PU (Polyurethane) insulation core with high density of about 37,25kg/m³ and bottom layer made from materials such as aluminum foil, PVC film or fiberglass fabric.

The product possesses 6 outstanding advantages including effective heat insulation, B1 fire resistance standard, waterproof and mold resistance with low moisture absorption density (W = 0,5001) and water absorption rate of only 9,11%. The service life of PU corrugated iron can be up to more than 20 years, while the galvanized iron layer has the ability to resist rust for up to 45 years under normal environmental conditions.

Insulated PU corrugated iron sheets are widely used in many types of constructions from civil to industrial, including wall and ceiling cladding for factories, cold storage, schools, hospitals, shopping centers and spaces requiring soundproofing such as halls.

There are currently four reputable brands on the market providing this product, including Hoa Sen, Dong A, Phuong Nam and Kosmos, with prices ranging from 137.000 to 193.000 VND/meter depending on the thickness of the corrugated iron.

What is the structure of PU insulated corrugated iron?

PU corrugated iron is an exterior material that helps insulate and prevent heat for the building. It is composed of 3 layers: corrugated iron layer, PU insulation core layer and bottom layer.

1. Corrugated iron layer: Made from Al-Zn alloy coated steel, acting as an insulating layer that is directly affected by external environmental factors such as sun, rain, wind, etc.
2. PU (Polyurethane) insulation core layer: This is a high density PU foam, with a mass of about 37,25kg/m³, stands out for its effective insulation, soundproofing and environmental friendliness.
3. Bottom layer: Usually made from materials such as aluminum foil, PVC film, PP or fiberglass fabric. This layer increases durability, limits fire spread and contributes to improving the aesthetics of the underside of the roof.

What are the advantages of PU corrugated iron sheets?

PU corrugated iron sheets have 6 outstanding advantages including: Excellent heat insulation and heat resistance; effective fire prevention; waterproof and mold-proof; long life span of up to more than 20 years; quick and convenient construction; good durability and load-bearing capacity.

Insulation, heat resistance

PU corrugated iron sheets are effective insulators thanks to the PU (Polyurethane) core layer between the two surface layers, with a high density of over 99%. The closed-cell foam structure helps prevent heat transfer effectively. Actual measurements show that when the outdoor temperature directly affects the corrugated iron surface, it reaches 65 degrees Celsius, while the bottom of the roofing sheet is only about 33 degrees Celsius, creating a temperature difference of up to 32 degrees Celsius.

Firewall

Kosmos PU foam panels meet B1 standards for the ability to limit the spread of fire in the event of a fire or explosion. Thanks to the highly fire-resistant PU foam layer and the fire-resistant supporting membrane layer underneath, PU panels help minimize fire risks, protect the safety of the building and extend the handling time in case of an incident.

Waterproof, mold resistant

Unlike conventional corrugated iron sheets that only have one layer of galvanized iron, PU insulated corrugated iron sheets are made up of 3 layers, which helps increase water resistance. PU material has a low moisture absorption density (W = 0,5001) and water absorption rate (HV = 9,11%), helping to maintain durability in humid environments.

Lifespan over 20 years

Kosmos’s corrugated iron panels have outstanding durability, with an actual service life of up to 20 years when properly installed and maintained. In particular, the product’s alloy-coated corrugated iron layer is also rust-resistant for up to 45 years under normal environmental conditions. Therefore, users can be completely assured of the safety and sustainability of the material throughout the life of the project.

Fast and convenient construction

Kosmos PU corrugated iron sheets are intelligently designed with a pre-locking system. Thanks to that, when installing, the panels only need to be easily joined together without many complicated steps. Thereby significantly shortening construction time, while saving labor costs.

Durable, good bearing capacity

PU corrugated iron sheets have impressive load-bearing capacity, ranging from 300 to 345 kg per square meter. The corrugated iron surface can withstand heavy loads without deformation or damage, even when installed in locations that are frequently exposed to strong winds, heavy rains or additional loads (such as solar power systems, roof-mounted equipment).

What projects can insulated PU corrugated iron sheets be applied to?

Thanks to its good insulation, heat resistance, fire resistance and waterproofing properties, PU insulated corrugated iron sheets are used in 5 types of constructions:

1. Wall, partition and ceiling cladding for factories, prefabricated steel buildings, cold storage, freezers: Ensures insulation and protection of goods in environments requiring stable temperatures.
2. Roofing construction for civil works such as schools, houses, hospitals: Helps reduce heat for interior spaces, increasing comfort for users.
3. Application in construction of shopping malls, offices, supermarkets: Ensures effective insulation, saves energy and creates a modern aesthetic space.
4. Construction of spaces with high soundproofing requirements such as halls, theaters, factories: Helps improve working conditions.
5. Moisture-proofing in buildings with high-end wooden floors such as high-rise buildings, apartments, hotels: Protecting floor structure and increasing the life of interior materials.
   

Which brands provide reputable PU corrugated iron?

In the current market, there are 4 PU roofing brands that receive high reviews for quality and reliability: Hoa Sen Roofing, Dong A, Phuong Nam and Kosmos.

1. Hoa Sen PU Sheet: Hoa Sen PU corrugated iron stands out with its high quality, durability and superior insulation. The product is manufactured on a modern production line, suitable for many types of projects.
2. Dong A PU corrugated iron: Dong A PU corrugated iron is an economical choice with reasonable price but still ensures effective heat resistance and insulation. This brand is trusted by many customers in civil and industrial works.
3. Phuong Nam PU Roofing: Phuong Nam PU roofing provides a variety of designs with different wave shapes and thicknesses. The products are competitively priced, suitable for projects with limited budgets.
4. Kosmos PU corrugated iron panel: Kosmos PU insulated corrugated iron is a choice trusted by many customers thanks to its diverse designs and superior quality. Currently, Kosmos provides 3 main product lines: 3-groove Panel, 4-groove Panel and 7-wave Panel, flexibly meeting the needs of many types of projects.
   

How much does PU insulated corrugated iron cost?

The following is the reference price list of PU corrugated iron sheets updated by Kosmos according to the market price level in June 6.

Please note that the prices provided are for reference only and may vary depending on the time and market fluctuations. In addition, the above price list only includes material costs, not including accessories, installation fees or shipping costs.

>>> Learn more about the advantages and disadvantages of outdoor panel cladding:

Frequently asked questions about PU insulated corrugated iron

How to transport PU corrugated iron without causing warping or damage?

To limit warping and distortion during transportation, you should note the following 3 points:

1. When loading heat-resistant corrugated iron onto the factory truck, it is necessary to place the corrugated iron on a pallet and use a suitable forklift or crane to ensure safety.
2. Do not stack the corrugated iron sheets too high, the reasonable number is about 10 to 15 sheets per stack. After stacking, use straps to firmly fix the top, middle and bottom of the stack to ensure that the corrugated iron sheets do not shift or fall when moving.
3. Before loading PU foam sheet onto the truck, you should line the floor and both sides of the truck with thick cardboard to avoid scratching the sheet surface during transportation.

>>> See more about outdoor panel designs and sizes:

What to note when choosing PU insulated roofing?

To ensure long-term efficiency and cost optimization, when choosing to buy PU insulated corrugated iron, you should note the following 5 important points:

1. Choose the thickness of corrugated iron and PU layer suitable for the purpose of use.: For civil works, you can choose moderate thickness; for industrial works, you should prioritize thicker corrugated iron and PU to increase load-bearing capacity and insulation.
2. Prioritize reputable brands: Choosing products from reputable brands helps ensure long life and stable insulation efficiency over time.
3. PU layer quality test: Should check carefully whether PU layer is good adhesion, smooth surface, no peeling or air bubbles, ensuring effective sound and heat insulation.
4. Consider the right color: Choosing colors is not only based on aesthetic factors but also considers feng shui factors, helping to create a sense of harmony for living or working spaces.
5. Calculate exact size of corrugated iron: Clearly determine the effective and overall width to cut the appropriate sheet metal, helping to limit material loss and save costs.

Besides PU core, what other types of cores are used in insulated corrugated iron?

In addition to the PU (Polyurethane) core, Current lines of insulated corrugated iron Also uses 4 other core types: EPS (Expanded Polystyrene), Rockwool (mineral wool), Glasswool (glass wool) and XPS (Extruded Polystyrene).

Which unit provides quality PU foam panel materials?

Insulated PU corrugated iron from Kosmos unit is the choice trusted by many customers thanks to its diverse designs and superior quality. Currently, Kosmos offers 3 main product lines: Panel 3, 4 slots , and 7 wave panel, flexibly meeting the needs of many types of projects.

4 outstanding advantages of Kosmos PU foam panels include:

1. Effective heat insulation and heat resistance, keeping the space cool.
2. High durability, life span up to 20 years, no rust within 45 years, safe and durable over time.
3. Waterproof, fireproof, meeting B1 standards, ensuring safety during use.
4. Quick and cost-effective construction thanks to pre-designed locking grooves, just need to be joined.

In general, PU insulated corrugated iron is currently the solution chosen by many projects thanks to its superior insulation, fire resistance, waterproofing and high durability. With its smart structure and diverse applications, the product is suitable for both civil and industrial projects. Hopefully, the information Kosmos has just shared will help customers easily choose the right PU corrugated iron for their project.

To learn more about panel models for projects requiring insulation and soundproofing, please contact the consulting hotline. Phone: 0932 067 388 by Kosmos.