Over time improperly installed gutters will loosen from freeze and thaw cycles, this can cause sagging. Sagging gutters hold water and cause ice buildup in winter. These are problems which only get worse with time.
This is due to them retaining water, over time steel gutters will rust, there is no quick fix for this. The problem is the gutter is holding water and the rust will continue to spread.
Original 4" gutters have a built in flashing which is set level on top of the new homes fascia. This is not a problem until your home settles, with settling the previous level gutters are no longer level. Tying this all together, those unlevel gutters lead too water retention, ice buildup, rusting, and a compromised system.
offers industry leading warranties on all metal products CLICK TO VIEW WARRANTY.
Skyline horizons aluminum products come in over 25 colors CLICK TO VIEW ALUMINUM COLORS AND INFORMATION, and is made in the USA from recycled and renewable aluminum.
If superior strength is what you are looking for, skyline offers steel coated with a zinc aluminum oxide to delay rusting. Skyline's steel offerings consist of over 15 colors CLICK TO VIEW STEEL COLORS AND INFORMATION.
Any general architectural specification questions you may have about skyline products can be answered HERE IN THIS PDF.