Lysaght recommends a support to be used on most applications.
Box gutter support spacing.
In other words you must install the hangers at a distance of 18 inches.
If you live in a warm place with sporadic rain you can hang gutter hangers close to the middle of the gutter with a spacing of no more than 36 inches or three feet apart from the center.
Hanger spacing defining a properly hanger spacing will be given by the predominant climate of your area.
In the event that your placement is wrong you risk having the gutter sag in certain spots.
However by using the support on all applications you do eliminate any ponding of water.
Without the correct support the rain gutters will sag.
Improper pitch the pitch or angle at which the rain gutters are hung is what allows the water to flow smoothly away from the home.
Aluminum gutter bury the downspout clogged gutter.
Accurate spacing for these pieces is of the utmost importance to the functionality of your gutter system.
Rainwater snow and ice will collect in these low points and eventually the weight will become too much for the hangers to bear.
In order to be able to support the bigger weights.
You may not necessarily need to use gutter supports if it was for a small box gutter when the base is less than 200mm wide.
Gutter hangers should always be placed at least every three feet for proper support 2 feet in northern climates where snow and ice can add additional weight on the gutters.