Roof Slope Gutter Clearance

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Roof slope gutter clearance.

Gutter should be pitched 1 16 or greater per foot for proper drainage. Gutter can be run level for appearance but addition downspout will be necessary see section on proper gutter and downspout sizing. The steeper a roof s pitch the more windblown rain it can collect. Roof pitch clearance below extended roof line 0 in 12 2 in 12 1.

The amount of collected water increases until it spills over the sides of the gutter. Hold one end of the level against the roof level it and then measure the distance between the roof and the underside of the level at its midpoint which gives you a 12 inch run. A roof with area 45 m 2 can be drained with a gutter with slope 1. The downspout can be 75 mm.

Gutter does not need very much grade slope to work properly. If gutters don t slope water gathers in them. If gutters slope too severely they don t hold water and water could splash over the sides in heavy rain. Most contractors tend to set the slop at one quarter inch per ten feet of guttering.

There are two factors that go into determining gutter position on the eave the pitch of the gutter and the roof slope. So if you have a 25 foot section of guttering you should set the downspout end of the gutter 5 8 of an inch lower 1 4 x 2 5 5 8 than the other end. From the table above a gutter with diameter 100 mm 4 inches can be used. You can measure pitch with a 2 foot level and a tape measure.

There are two factors that go into determining gutter position on the eave the pitch of the gutter and the roof slope. Gutter should be pitched 1 16 or greater per foot for proper drainage. Gutter can be run level for appearance but addition downspout will be necessary.