Gutter Expansion Joint Distance

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.

Gutter expansion joint distance.

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. Installation maintenance t pren joints can be placed at a maximum distance apart of 6 metres. 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. 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. The maximum distance between expansion joints shall be 50 feet. 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.

An invaluable inspection resource for owners of standing seam batten seam or bermuda type roofs. 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. Expansion allowances gutter specific expansion tables based on girth profile metal predicted annual δt expansion of building materials table with various expansion coefficients must be used for fascia and copings with consideration of both metal and substrate flat seam roof expansion guidance over 30 feet use batten seam design to allow for expansion. Expansion joints in copper gutters must be provided to allow for the natural expansion and contraction of copper caused by thermal changes.

Sidewalk curb and gutter expansion joints sshall be installed at all radius points at both sides of each driveway at both sides of each alley entrance at every change of depth in the concrete and shall provide. The depth shown in the calculations is at the upstream end. However the joint spacing depends on the metal and the gauge used. For 5 6 gutter.

Required gutter slope 1 40 to 1 200 there is always some confusion as to how the slope affects the overall depth.