Proper Rain Gutter Slope

Next place a ladder at the left side of the house and measure from the roof down to the gutter.

Proper rain gutter slope.

Purchase at least the total length of gutter along with additional materials. Calculate the gutter slope by dividing the length of the gutter needed by 10. 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. For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e.

Measure the length of the roof that you re working on. The minimal slope needed for proper gutter drainage is 1 25 cm 1 4 inch for every 3 metres 10 feet of gutter. If adding a rain barrel. This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end.

Set two 2 inch thick concrete pavers on the ground directly below the downspout outlet. 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. Gutter can be run level for appearance but addition downspout will be necessary see section on proper gutter and downspout sizing. Then fasten one end of the string at the highest point of the gutter and the other at the spot where the downspout will be.

This means that your gutter should be a half inch lower in height at every 10 foot mark until you reach the downspout. Gutter should be pitched 1 16 or greater per foot for proper drainage. Set a rain barrel on top of the concrete pavers. 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.

As a general rule gutter slope is set at 1 4 inch per 10 feet of guttering. Attach a short length of downspout to the. Head to a home improvement store for. The standard slope for rain gutters is half of an inch for every 10 feet.

First determine the location of each one of your downspouts. Measuring the roof and purchasing materials 1. There are two factors that go into determining gutter position on the eave the pitch of the gutter and the roof slope. For example if the gutter is 16 feet long the end near the down spout must be 1 inch lower than the starting end.

Install a diverter in the downspout positioning it even with the top of the rain barrel.