The reasons for this is many.
Do prepainted steel gutter rust.
Aluminum is a light weight product which will never rust.
Both the downspouts and gutters need to be painted on outside and the gutters on their insides as well.
Most commonly rust forms in gutters when water pools inside them either due to improper installation improper slope over time or a clog inside the gutters that allows water to stand rather than flow freely.
The protective zinc coating does eventually begin to wear away exposing the bare metal.
It is available in multiple color choices and comes with a baked on enamel finish which is highly a scratch resistant.
However the gutter s trough cannot be painted with regular paint as it is not designed to be immersed in water.
Luckily rusted gutter repair isn t too difficult.
But as with other high end custom materials the drawback is cost.
Some materials including steel may begin to rust over time from simply being exposed to humidity.
Gutters made of galvanized steel are strong and durable but they re no longer as popular as they once were because of their susceptibility to rust after a few years.
This is due in part to the fact that the steel is coated in a thin layer of zinc to prevent rusting.
If not repaired the scratches can lead to rust.
Pre painted aluminum gutter material is the 1 choice for gutter materials in the united states and canada.
Stainless steel gutters are strong and rust free and maintain their high sheen for years.
How to treat rust spots on your gutters.
This zinc is easily scratched off and the scratches are difficult to see.
However aluminum resists it slightly better than galvanized steel.
For this reason galvanized steel aluminum or vinyl gutters are the predominant varieties.
Galvanized gutters and downspouts have to be properly prepared so they don t rust.