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Corten steel is a metal alloy made by adding copper, phosphorus, silicon, nickel and chromium to iron. When exposed to air, the material forms a protective layer of rust. This natural coating prevents further corrosion, extending the planter's life.
SPECIFICATIONS:
5-year guarantee.
Corten steel planters are very robust, hard-wearing, weatherproof, low-maintenance and durable.
The planter has hidden feet (17 mm) and drainage holes, which allows it to float a little above the ground and provides optimal drainage.
The corten steel has a standard thickness of 3 mm.
Products are delivered without rust. The corten steel rusting process takes about 4-5 months, depending on weather conditions.
The rust can be fixed by applying Owatrol. This is a penetrating rust inhibitor that forms a protective anti-rust coating. Owatrol protects the planter and stops the rust on corten steel flaking off.
We do not recommend using corten steel within 2 km of a coastline. See our blog post “Corten Steel and Coastal Sites” for more info. Key points of interest:
Products should be unpacked immediately upon receipt to release any moisture trapped inside the packaging. If the product is left in its packaging, it may develop uneven rust patches.
Ensure proper drainage.
Do not use an overflow pipe; no excess water should remain in the corten steel planter. This can cause the metal to corrode due to the interaction of oxygen and soil.
Do not use hydro pellets: they retain moisture.
The guarantee expires if you drill or grind in a way that is not specified.
The weathering process may cause rust run-off.
PLANTING ADVICE:
Cover the bottom of the planter with a layer of gravel (approx. 10 cm, Ø35 mm grading).
Place a permeable anti-root membrane over the gravel.
Cover the membrane with soil suitable for your chosen plants.
Do not use an overflow pipe; no water should remain in the corten steel planter.
