Place the line spirit level on the string.
Slope of a gutter.
Technically speaking the slope also called the pitch of the gutters is the amount by which the gutters slant downward along the path of the water flow.
To ensure that gutters drain properly make certain they slope inch for every 10 feet toward a downspout.
You want at least a quarter inch of slope for every 10 feet.
If there s standing water it s not pitched properly.
The standard slope for rain gutters is half of an inch for every 10 feet.
If gutters slope too severely they don t hold water and water could splash over the sides in heavy rain.
The amount of collected water increases until it spills over the sides of the gutter.
Gutters need to be pitched toward the downspouts for the water to flow properly.
How to calculate slope for rain gutter installation.
A gutter over 30 feet needs two downspouts.
For spans longer than 40 feet it s wise to have a downspout on each end and start the high spot of the gutter in the center.
The gutter apron will prevent the dripping.
To correct this yourself you ll need to measure from the peak to the downspout.
If gutters are not sloped enough the water will simply pool in the gutters and eventually spill over their sides.
Use the bubble on the line level to make sure the line is level the length of the gutter area.
Get on a ladder after a rainstorm and look in the gutter.
Multiply the number of feet by 1 16 inch to determine the total slope the gutter requires.
Home centers sell a gutter apron in 10 ft.
How to fix gutter slope measure the length of the gutter that you plan to adjust.
For example if the gutter is 16 feet long the end near the down spout must be 1 inch lower than the starting end.
Start on the end of the gutter farthest from.
This means that your gutter should be a half inch lower in height at every 10 foot mark until you reach the downspout.
A gutter over 30 feet needs two downspouts.
If water is dripping behind your gutter it s probably because it was installed without any flashing over the back of the gutter.
If gutters don t slope water gathers in them.
The gutter slope also called the pitch is the amount the gutter tilts down to let rainwater flow out of it.
For gutter runs longer than 40 feet it s best to pitch the gutter down from the middle to a downspout at each end.
To get started measure the side of the house directly under the gutter to determine its length in feet.
