As a general rule gutter brackets should be no more than 30 inches apart although there may be exceptions such as really high quality steel or aluminum.
How far apart to install gutter brackets.
You can also make them wider if the brackets are more heavy duty.
Brackets will need to be fitted around 36 inches or 3 feet apart in order to fully support the weight of your gutter although it is better to fit them every 30 inches if you live in a wet area.
Screws can be either round head or countersunk.
If you live in an area that is prone to regular heavy snowfalls position fascia brackets so they are no more than 400mm apart.
For warmer climates you can hang gutter hangers as close to the center of the gutter at a spacing of no more than 36 inches or three feet apart from the center.
All floplast guttering systems are tested for snowloading.
For rainy climates where gutters will handle a larger amount of water for long periods they should have a maximum distance of 18 inches apart between them.
The british standard test stipulates that with brackets at the correct recommended spacings the gutter should be able to hold a 75kg loading of snow without the brackets breaking.
Guttering is generally sold in 2m or 4m lengths and is easily cut to size with a hacksaw but be sure to de burr any cut surfaces with a file or sandpaper.
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.
The bracket system hangs the gutters from the roof and you need to include many more brackets than the spike system needs.