To get started measure the side of the house directly under the gutter to determine its length in feet.
Rain gutter slpe.
Gutters need to be pitched toward the downspouts for the water to flow properly.
If gutters slope too severely they don t hold water and water could splash over the sides in heavy rain.
For example if the gutter is 16 feet long the end near the down spout must be 1 inch lower than the starting end.
Get on a ladder after a rainstorm and look in the gutter.
Rain gutters have to slope down to the downspout for proper drainage.
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.
Slope calculation this is a critical aspect in any rain gutter installation.
Or you can slope the gutters down from each end toward a single downspout placed in the middle of the run.
The amount of collected water increases until it spills over the sides of the gutter.
A line spirit level is a very small level that attaches to string.
You want at least a quarter inch of slope for every 10 feet.
The right rain gutter slope is subtle enough that you won t notice it from the street but also steep enough so that it easily sheds water towards your downspout.
An incorrect slope can cause substantial gutter system malfunction.
When you look at a rain gutter system from the ground it looks like it was parallel to the roofline of the house but they are slightly inclined so rainwater can flow straight to the downspout without problems.
To ensure that gutters drain properly make certain they slope inch for every 10 feet toward a downspout.
Multiply the number of feet by 1 16 inch to determine the total slope the gutter requires.
Place the line spirit level on the string.
If gutters don t slope water gathers in them.
For gutter runs longer than 40 feet it s best to pitch the gutter down from the middle to a downspout at each end.
Pull the line tight to the other side of where the gutters will be installed.
If there s standing water it s not pitched properly.