Improperly Pitched Gutters To correct this yourself, you'll need to measure from the peak to the downspout. Snap a chalk line between the two and find the spots where the gutter is out of alignment. You might be able to push it up into place by bending the hanger.

Rain gutters always need to be pitched, or slanted, slightly towards the downspout. There is a science to the degree to which they need to be pitched, however, and getting it wrong can lead to your rain gutters overflowing. They should slope about two inches for every forty feet.

The general rule of thumb is that your rain gutter slope should be anywhere from ¼ to ½ of an inch per every 10 feet of gutter. However, this may change depending on the home, as some houses can have differences in how their roof slopes along the gutters, among other factors.

The gutter should extend slightly past your roof's shingles. 3/4 of your gutter's width should stick beyond the shingles to catch all the water and lead it properly down the downspouts. The gutter should be between 2 and 3 inches away from the roof's edge.