Internal Copper Gutter Minimum Slope

All guttering must slope toward the nearest downspout.

Internal copper gutter minimum slope.

The modified details are discussed below. Expansion joints in copper gutters must be provided to allow for the natural expansion and contraction of copper caused by thermal changes. With the exception of membrane roofs water from internal gutters must discharge into a rainwater head or to an internal outlet as shown in e2 as1 figures 63 a and b and figures 64 b or c see figure 3. Expansion joints may also be required at changes in gutter width or depth at corners and at end conditions.

With the exception of membrane roofs water from internal gutters must discharge into a rainwater head or to an internal outlet as shown in e2 as1 figures 63 a and b and figures 64 b or c see figure 3. Most contractors tend to set the slop at one quarter inch per ten feet of guttering. Table 8 1b shows the minimum recommended slopes using these special details. In general long straight runs should have joints spaced a maximum of 48 feet apart.

E2 as1 8 1 6 1 requires all internal gutters to have a minimum 1 100 slope. This brings up another important rule to keep in mind. For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e. Table 8 1a shows the recommended minimum slopes for various copper roofing systems using the details shown throughout this handbook.

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. E2 as1 8 1 6 1 requires all internal gutters to have a minimum 1 100 slope.