Box Gutter Expansion Joint Spacing

Therefore any slope on the gutter will make the downstream end deeper or the flashing longer.

Box gutter expansion joint spacing.

P o box 38 barnes city ia 50027 0038. 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. The depth shown in the calculations is at the upstream end. By reducing the downspout spacing to perhaps 35lf you could use a 6 gutter with 9 4 x6 downspouts in lieu of an 8 system.

Do not caulk the cover plate. Use to allow thermal expansion of our 6 commercial box gutter system. 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. Note that gutters require expansion joints at 40 centers.

At the end of the forth 4th gutter and prior to its installation install a gutter expansion cover plate to center the joint. Maximum allowable length between expansion joints with one end fixed. Box gutter gradients shall not be flatter than 1 200 for sole widths equal to or less than 600mm wide. Deviations from the gradient must be smooth and prevent towards the outlet without a proportional permanent ponding.

Required gutter slope 1 40 to 1 200 there is always some confusion as to how the slope affects the overall depth. Includes slip plate two internal end cap and cover plate. 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. In this example your maximum spacing of downspouts should be 40.

Fabricated from 24 gauge kynar steel. Expansion joint alum 032 6 commercial box profile. Most box gutters are joined with silicone and screws rivets and over time they will break down and possibly separate due to the movement of the metal compromising your box gutter joints. The expansion joint consists of a self adhesive rubber strip to cover a 1 gap joint between adjoining sections and an exterior cover plate.

The entire assembly consist of two internal end caps one slip joint connector and one slip cover plate. Box gutter expansion joint from aztec are placed over the two box gutter joints.