Tin Roof Pitch Requirements

Most residential metal roofs require at least a 3 12 roof pitch and have no maximum roof pitch.

Tin roof pitch requirements.

Profile in the context of metal roofing means the shape that the sheet of metal is bent into to form the panels. 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. Minimum pitch metal roof snow. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

This link will take you to section 1507 requirements for roof coverings to jump to the subsection for your type of material click the name of the material in the code index on the left side of the page you may have to click on the. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. Metal roofing system when properly designed and installed is famous for its strong performance against harsh climate environments.

The minimum roof slope for metal roofs is dependent upon the roof profile. For each type of roofing material you can see the actual language used in the model 2018 international building code at the international code council website. After that the miimum pitch for metal panels depending on the methods used to join the panels. That is a 14 degree angle.

Metal roof slope is expressed by a ratio indicating the roof pitch which notes the vertical rise of the roof in inches for every 12 inches the roof runs horizontally in other words dividing the vertical rise and its horizontal span. Minimum pitch for metal roof. There are several other factors that add up to this quality certainly such as proper slope snow loading requirements or the snow guard usage. Panels joined with an applied lap sealant can go as low as 12.

To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. The traditional metal roof types such as 5v crimp shown above and corrugated are rated by the manufacturers for use down to a 3 12 pitch three inches of vertical rise for every foot of horizontal run because of the shallow height of the undulating ridges of the 5v and corrugated profiles and the use of exposed metal fasteners. That means there is at least 3 of vertical rise to the roof slope for every 12 it goes back horizontally. Let us recap on the minimum roof pitch required for each type of roofing material.