Gutter Expansion Joint Spacing

The spacing of the expansion joints depends on the size of the gutter and thickness of the metal but a general rule is that an expansion joint should be included about every thirty feet.

Gutter expansion joint spacing.

Recommended hanger spacing is 24 on centers. There are a couple of options when it comes to expansion joints in gutters. Copper aluminum zinc and galvanized steel. Thermal expansion is the tendency for a material to expand and contract when exposed to changes in temperature.

Most new box gutters these days are made of either copper or stainless steel although many old box gutters were made of terne coated steel. Sidewalk that abuts curb or gutter shall have joints that match the curb or gutter joints. In general long straight runs should have joints spaced a maximum of 48 feet apart. Next we need to check spacing 335lf 8 downspouts 40 centers approximate.

The space between sidewalk joints shall not exceed 125 of the sidewalk width for example. Expansion joints are a component in seamless rain gutter systems designed to protect the gutters from the effects of thermal expansion. Expansion joint galv 24g 8 box kynar finish. Note that gutters require expansion joints at 40 centers.

8 commercial box gutter expansion joint in kynar 500 steel use an expansion joint every 40 50 lineal feet. Expansion joints in copper gutters must be provided to allow for the natural expansion and contraction of copper caused by thermal changes. In this example your maximum spacing of downspouts should be 40.