Gutter Expansion Joint Distance

Expansion joints may also be required at changes in gutter width or depth at corners and at end conditions.

Gutter expansion joint distance.

Required gutter slope 1 40 to 1 200 there is always some confusion as to how the slope affects the overall depth. The spacing of the expansion joints depends on the size of the gutter and thickness of the metal but a. Maximum allowable length between expansion joints with one end fixed. Following smacna guidelines a 20 ounce copper built in gutter with a 12 inch bottom dimension should have a maximum distance to a fixed point such as a downspout ranging from 17 feet to 20 feet then there would be an expansion joint.

For complete separation of adjoining structures. Expansion joints in copper gutters must be provided to allow for the natural expansion and contraction of copper caused by thermal changes. Therefore any slope on the gutter will make the downstream end deeper or the flashing longer. An invaluable inspection resource for owners of standing seam batten seam or bermuda type roofs.

Where movement is restricted by an outlet or corner for example an expansion joint should also be sited within 1 metreof that restriction. In general long straight runs should have joints spaced a maximum of 48 feet apart. Presents practical troubleshooting and corrective tips for typical problems of roof panels gutters downspouts fascia copings flashing ridges and hips valleys expansion joints penetrations fasteners and soldering. The depth shown in the calculations is at the upstream end.

For runs that require longer than 50ft an expansion joint can be used or two shorter runs of gutter with end caps can be butted together with a piece of aluminum folded over the joint. For 5 6 gutter. According to smacna the best way to protect your gutter system from thermal expansion is to split any run of 50 ft or more into two separate runs capping both ends and leaving gap between the top edges of the end caps fig 1. Installation maintenance t pren joints can be placed at a maximum distance apart of 6 metres.

The maximum distance between expansion joints shall be 50 feet.