PRICE
The initial price for aluminum railings is usually cheaper than for wrought iron. Nevertheless, if an aluminum railing starts to corrode they are almost impossible to repair, and most of the times you will have to replace the entire system. Wrought iron railings are more pricey because you are paying for a better quality material. If paint starts to wear off it can be simply re-painted. As the old proverb says: “Buy nice or buy twice.”