Minimum Slope On Patio Roof Of Corrugated Metal

Minimum metal roof slope depends on the roof profile building design climate and site location.

Minimum slope on patio roof of corrugated metal.

The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof. The corrugated metal roof minimum slope is 5 degrees. The corrugated profile dates back to 1820 and it is the most used metal roof profile in the world.

The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of three in twelve or 3 12 3 inches vertically per 12 inches horizontally. The minimum pitch for shingles is 1 6 which is equivalent to 4. Typically low slope metal roof systems vary in weight from 40 to 135 pounds per 100 square feet making them among the lightest roofing products and the easiest to install. Typically large footprint single story warehouses and pre engineered metal buildings will utilize low slope metal roof systems.

Depending on the roof profile there are minimum roof slope requirements for each panel which need to be considered. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. In most occasions a pitch of three in twelve is preferred but this should also take into consideration the manufacturer s recommendations as well the unique condition of the corrugated metal roof. This meant the patio cover could start at the edge of the house s roof at a height of eight feet and slope down to seven feet leaving a clearance of more than six and a half feet between the lowest part of the frame s headers and the ground at its outer edge.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The most common disregard for engineering logic is the rule of minimum pitch for corrugated iron roofing. Determine the minimum slope of the roof based on the roofing material. Using corrugated metal also allows me to reduce the degree of slope or roof pitch needed to a mere 10 percent or a 1 to 10 pitch.

Most buildings with metal roofing system are using corrugated roofing type. Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. It is indeed the metal roof profile that is most used around the world which can be. If you have a metal roof on your house there is a good chance that it is made of corrugated iron roofing.

These slope considerations. A lightweight roofing system also places fewer demands on a building s structural support system an important consideration in earthquake prone areas.