Smacna Gutter Expansion Joint Detail

For the lap type gutter expansion joint a gutter end is recessed 2 1 2 minimum into the gutter on one gutter section and fitted flush on the other.

Smacna gutter expansion joint detail. Right two runs butted together 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 spacing of the expansion joints depends on the size of the gutter and thickness of the metal but a. Smacna s mission is to provide products services and representation to enhance members businesses markets and profitability. Install expansion joints at the ends of every forth 4th gutter section which will divide the gutter system into 40 segments.

Left per made expansion joint. Figure 1 9 built in gutter expansion joint at wall jan 12 2018 15 05 pm figure 1 8 built in gutter expansion joint. Smacna bubble dvd destroys design myths jan 2 2018 11 37 am duct system calculator metric jan 2 2018 11 35 am. Smacna gutter installation instructions step 3.

Sheet metal and air conditioning contractors national association 4201 lafayette center drive chantilly virginia 20151 1219 tel 703 803 2980 fax 703 803 3732. 15 m is a practical maximum gutter length to be served by a downspout. An expansion joint cap is placed on top over the gutter end flanges and the cover plate. Sheet metal and air conditioning contractors national association 4201 lafayette center drive chantilly virginia 20151 1219 tel 703 803 2980 fax 703 803 3732.

To limit the effects of thermal expansion in gutters 50 ft. Gutter ends are flanged then riveted and soldered into the gutter sections. The capacity of a sloped rectangular gutter may be approximated by using a gutter cross section area not less than that of a semicircular gutter and a depth to width ratio of at least 0 75. The expansion joint consists of a self adhesive rubber strip to cover a 1 gap joint between adjoining sections and an exterior cover plate.