Things You Need to Know Before Buying Corten Steel Siding in 2025

Corten steel siding will usher in a new trend in 2025. More and more people choose weathering steel as landscape exterior wall cladding. How to choose a suitable weathering steel cladding before buying? This is Daisy, a supplier from AHL Corten Group, specializing in corten metal panels. Today, I will introduce to you the precautions before buying cladding. Imagine a building with a natural rust-red facade without any deliberate carving, as if nature has painted a flowing picture on its surface. 

As time goes by, a layer of rust will form on the surface of the weathering steel exterior wall cladding. This layer of rust is not the loose and easy-to-fall-off rust we often see, but a tightly structured and highly adherent oxide layer. It acts like a natural barrier, effectively preventing moisture and oxygen from further corroding the interior of the steel, thereby greatly improving the corrosion resistance and service life of the steel. Therefore, using weathering steel as a building cladding (corten metal siding) can greatly reduce the cost and effort of later maintenance, without the need for frequent paint or coating maintenance.

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Corten Steel Siding usually refers to weathering steel sheets that have been processed by cutting, forming and other processes, which can be directly used for the decoration and protection of building exterior walls, roofs, curtain walls and other parts. They can be made into various shapes and sizes according to design requirements, providing architects and designers with great creative space.

As a specialist Corten steel manufacturer, AHL understands the value and potential of this material. If you are planning to use weathering steel in your building projects in 2025 or beyond, then you will need to know about corten metal panels

Why Choose Corten Steel Siding?

• Good sound insulation: Corten exterior wall siding can be used as building sound insulation material to effectively reduce the interference of building noise to people.
• Strong adaptability: Weathering steel cladding is not only suitable for exterior wall cladding of buildings and sculptures, but also can be used to make building signs, guidance systems, agricultural facilities, windbreak partitions and other scenes. Its wide applicability makes rusted steel cladding one of the important materials in architectural and sculptural design.

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What Types of Corten Metal Siding are There?

1. Cassette Weathering Steel Siding

• Features: The corten metal siding is fixed in a box shape. Most of the box steel plates are prefabricated in the factory and are concealedly fixed to the basic frame with clips and screws, and then fixed to the load-bearing structure through the frame. The box cladding has a neat and uniform effect, and the depth and width of the panel can be customized.
• Application: It can be used for both roofs and exterior walls. Its structure is stable and beautiful, and can be well integrated into the overall design of the building.

2. Open Corten Steel Cladding Structure

• Features: The surface will show better rigidity due to the exposed side of the steel plate. The non-glue construction method makes it possible to directly cut the metal edge without folding it. The edge of the corten metal siding is more neat, sharp, and the edge is more crisp.
• Application: It is mostly used for exterior wall decoration. Due to its unique visual effect and good rigidity, it can improve the overall beauty and safety of the building. However, it should be noted that due to the open structure, rainwater can flow into the back space of the panel, so a reliable water and drainage system should be set up on the inside of the curtain wall, and a waterproof protective layer should also be used on the outside of the wall base.

3. Single-Layer Residential Corten Metal Siding

• Features: It is composed of a single layer of corten metal siding, and the structure is simple and clear.
• Application: It can be used for roofs and exterior walls, but due to its single-layer structure, more waterproofing, drainage and support issues may need to be considered during design and installation.

4. Composite Corten Steel Siding Structure

• Features: It is composed of a combination of multiple materials, such as an inner layer of aluminum alloy frame, filled with polyurethane foam insulation material in the middle, and covered with stainless steel panels on the outside. This structure combines the advantages of multiple materials, such as the corrosion resistance of weathering steel and the heat insulation and sound insulation properties of other materials.
• Application: It is mostly used for roofs and exterior walls with higher performance requirements, such as places that need to withstand high-intensity natural environmental influences or occasions where the overall energy efficiency of the building needs to be improved.

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How to Maintain Weathering Steel Cladding?

 

1. Regular Cleaning:

• It is recommended to clean the rusted steel siding thoroughly every 6-12 months.
• Use clean water and a soft cloth to wipe off dust, dirt and other impurities on the surface.
• For stubborn stains, special cleaning agents or diluted acidic solutions can be used for cleaning, but it should be ensured that they are thoroughly rinsed after cleaning to avoid corrosion of the steel by residues.

2. Coating Protection:

• Choose anti-rust paint or paint suitable for weathering steel for coating to ensure that it has good adhesion and corrosion resistance.
• Before coating application, ensure that the steel surface is dry, clean, free of oil and rust.
• After the coating is dry, a quality inspection should be carried out to ensure that the coating is free of defects such as bubbles and cracks.
• Check the integrity of the coating regularly. If there is any damage or peeling, it should be repaired or re-coated in time.

3. Drainage and Waterproofing:

• Ensure that the drainage system of the corten metal panels is unobstructed to avoid corrosion caused by water accumulation.
• For the waterproof layer, its integrity should be checked regularly, and if there is any damage, it should be repaired in time.

4. Inspection and Maintenance:

• It is recommended to conduct a comprehensive inspection of the corten metal panels every 6-12 months.
• The inspection content includes whether there is rust, cracks, deformation and other phenomena on the steel surface.
• For the rusted parts, they can be polished, rust-removed and repainted.
• For severely rusted or damaged steel, it should be replaced in time.

5. Avoid Excessive Stress and Chemical Corrosion:

• During use, avoid applying excessive stress or impact to the weathering steel cladding to avoid deformation or damage to the steel.
• Avoid contact between weathering steel and corrosive substances such as acids and alkalis to avoid corrosion of the steel.