What Houzz contributors are saying:
Aluminium and stainless steel are popular mid-priced options. They’re also easy to care for, generally requiring only a rinse with a hose and perhaps scrubbing with a diluted detergent solution for stubborn spots. Aluminium is lightweight and rust-resistant and is good for damp climates. You can also find powder-coated aluminium, which will allow you to choose a colour you love. Its light weight does mean it won’t be as sturdy as other options. Stainless steel is heavier and stronger than aluminium but with the same rust resistance. Stainless steel can chip, making it vulnerable to rust, so repair any damage as soon as you can.Wrought-iron arbours are more expensive than aluminium and steel, but they add a sense of permanence and tradition to the garden. Wrought iron is highly durable, but chips will need to be sanded and refinished to prevent rust. Expect wrought iron to last for decades.