Oxidised copper sheets S.Copper
Two options are available: NB - a rich, noble chocolate-brown, and NBL - its lighter, airier version.
Such a surface is not afraid of installation marks - fingerprints and other touches are virtually invisible on it. This is a practical solution for projects where flawless aesthetics matter from day one. Oxidised copper sheets are ideal for museums, exhibition centers, private residences and any architectural accents requiring strictness and premium quality.
What is an oxidised copper sheet
An oxidised copper sheet is a copper sheet whose surface has been artificially oxidised at the factory. As a result of a chemical reaction, a layer of copper oxide (CuO and Cu₂O) forms on the copper, which has a dark brown, chocolate or almost black shade. This color corresponds to the natural state of copper after 3–7 years of use - before the formation of green patina begins.
How oxidised copper is produced
The process begins with the preparation of a copper sheet. It is then treated with special chemical compositions that initiate the oxidation reaction. Unlike patination (green color), oxidation is stopped at the stage of brown oxide. After this, the surface is rinsed, and if necessary, a transparent varnish or wax is applied. All processing happens under factory conditions, which guarantees color uniformity and shade stability across the entire sheet area.
How oxidised copper differs from patinated copper
| Characteristic | Oxidised copper | Patinated copper |
|---|---|---|
| Color | Chocolate-brown, dark bronze | Green-blue, turquoise |
| Stage of aging | Intermediate (3–7 years) | Final (10+ years) |
| Difficulty of obtaining | Lower (less aggressive reagents) | Higher |
| Cost | 10–20% lower than patinated | Higher |
| Application | Modern architecture, retro style, historical reconstructions | Classical historical buildings, temples |
Advantages of oxidised copper sheet
Time saving
Under natural conditions, copper acquires a beautiful dark brown shade only after 3–7 years. Initially it is rose-gold, then gradually darkens. An oxidised sheet gives the "age" of noble copper straight from the factory.
Uniform color
Natural oxidation often occurs in patches due to uneven exposure to rain, sun and contaminants. Factory oxidation creates an ideally even tone across the entire surface. This is especially important on large facades and roofs.
Corrosion protection
The oxide layer, like patina, protects copper from further corrosion. It does not peel off or wash away with rain. A properly treated sheet retains its protective properties for decades.
Prestigious and universal appearance
Chocolate copper looks expensive, but less "historical" than green patina. It combines well with wood, glass, stone and warm tones of facades. Suitable for both classical and contemporary projects.
Where oxidised copper sheets are used
Roofing
Oxidised copper is an excellent choice for pitched roofs, domes, roof windows and spires. The dark brown color does not glare, organically fits into forest, park and urban landscapes.
Suitable for: private mansions, cottages, guest houses, restaurants, hotels.
Facades
Ventilated facades made of oxidised copper attract attention with their depth and nobility. They look particularly impressive in combination with light stone, wood or warm plaster.
Suitable for: business centers, private residences, spa complexes, museums.
Decorative elements
Oxidised sheets are used to manufacture downspouts, cornices, flashings, window frames, awnings, trim, lamp posts. These details give the building a finished, thoughtful appearance.
Suitable for: any project where detailing and unified style are important.
Interiors
Oxidised copper is used for wall finishing, fireplaces, bar counters, stair railings, kitchen backsplashes. It creates an atmosphere of warmth and coziness.
Suitable for: restaurants, hotel lobbies, private homes, showrooms.
How to choose an oxidised copper sheet
Sheet thickness
| Thickness | Application |
|---|---|
| 0.5–0.6 mm | Standing seam roofing with sheathing spacing up to 60 cm |
| 0.7–0.8 mm | Roofing in snowy regions; facade panels |
| 1.0–1.2 mm | Decorative elements, reinforced cornices, steps |
Sheet format
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Standard sheets. 1000×2000 mm, 1250×2500 mm, 1500×3000 mm. Convenient for small facades and roofs.
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Large-format sheets. Up to 1500×6000 mm. Minimum joints, ideal flatness.
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Coils. For standing seam roofing - up to 50 m long.
Oxidation shade
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Light chocolate. Closer to the color of dry cinnamon. Good for modern facades with cool tones.
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Dark chocolate. Classic oxidised color. Universal.
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Black-brown. Almost black with a slight bronze tint. For ultra-modern projects and accent elements.
Protective coating
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No coating. The oxide layer protects copper, but over time may darken to an almost black shade. Suitable for roofs and facades where mechanical exposure is not planned.
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Lacquered. Clear varnish fixes the color, prevents further darkening and protects from scratches. Recommended for interiors and elements with intensive use.
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Waxed. Matte coating, pleasant to the touch. Protects from fingerprints. Used in interiors.
Why buy oxidised copper sheet from the manufacturer
If you have decided to buy an oxidised copper sheet, working directly with the manufacturer provides several important advantages.
Manufacturer prices
Without distributor and building supply store markups. Manufacturer prices for oxidised copper sheets per m² in Moscow are 15–25% lower than market prices.
Quality control
The manufacturer is responsible for the source copper (purity, plasticity), thickness, chemical composition for oxidation and finish protection. You receive material that will last decades.
Any size for your project
The manufacturer cuts sheets to your project dimensions. This minimizes waste (sometimes down to 5% versus 15–20% when buying standard sheets).
Shade stability
When ordering one batch, you receive sheets with uniform color across the entire area. No risk of a "spotted" facade due to differences between distributor batches.
Delivery throughout Russia
We ship products to any region of Russia through verified transport companies. Delivery to Moscow terminal is often free.
Manufacturer prices for oxidised copper sheets per m² in Moscow
Approximate manufacturer prices for oxidised copper sheets per m² in Moscow (order from 100 m², dark chocolate shade):
| Thickness | Without coating | With protective varnish |
|---|---|---|
| 0.5 mm | from 2,600 ₽ | from 3,100 ₽ |
| 0.6 mm | from 3,000 ₽ | from 3,500 ₽ |
| 0.7 mm | from 3,400 ₽ | from 3,900 ₽ |
| 0.8 mm | from 3,800 ₽ | from 4,300 ₽ |
| 1.0 mm | from 4,800 ₽ | from 5,400 ₽ |
Prices are approximate. Exact cost is calculated based on current copper rates and order volume.
For large projects (from 500 m²) discounts up to 10% are possible. Light chocolate shade often costs the same as dark chocolate. Black-brown may be 10–15% more expensive (requires longer processing).
Frequently asked questions
1. Will oxidised copper continue to darken over time?
With artificial oxidation, a stable oxide layer forms on the surface. It does not change color in open air under normal conditions. If the sheet has no protective varnish and is located in an aggressive environment (industrial city, seaside), slight darkening to an almost black shade is possible. A varnished sheet retains its color virtually forever.
2. Can oxidised copper be used for roofing with high snow loads?
Yes. For snowy regions, choose a thickness of at least 0.7 mm. The oxide layer or varnish do not affect mechanical strength. It is important to correctly calculate sheathing spacing (no more than 60 cm for 0.5–0.6 mm thickness, no more than 80 cm for 0.7–0.8 mm).
3. What is cheaper - oxidised copper or natural aging?
An oxidised sheet costs 20–30% more than ordinary copper due to processing. However, you save 3–7 years of waiting and eliminate the risk of uneven spotty oxidation. If the budget is limited, you can buy ordinary copper and wait - the color will be similar, but uniformity is not guaranteed.
4. Is the oxide layer damaged during installation (bending, cutting)?
With careful installation on standard equipment, the coating is not damaged. It is important to use rollers with soft rolls and avoid rough compression of the metal. The edges after cutting remain rose-gold - this should be considered in design (edges should be hidden or treated with a special compound).
5. What is the service life of an oxidised copper sheet?
Copper lasts 80–100 years. The oxide layer is preserved for 30–50 years. Varnish - 10–20 years (requires renewal with intensive use). Thus, a roof or facade made of oxidised copper will last at least 50 years without major repairs.
Perfect for roofing, facades, decorative elements
The oxidised copper sheet is a material for those who want to get a noble chocolate-brown shade without years of waiting. It is perfect for roofing, facades, decorative elements and interiors, combining the durability of copper with the aesthetics of a "calm" warm color.
If you want to buy an oxidised copper sheet for roofing, wall and facade finishing from a manufacturer, contact Cladding Solutions. You will receive quality material with uniform color, any thickness and format, at manufacturer prices for oxidised copper sheets per m² in Moscow. Delivery throughout Russia. Make your project stylish, warm and durable