Minimum Shed Roof Slope

The corrugated metal roof minimum slope is 5 degrees.

Minimum shed roof slope.

A quarter inch slope is the lowest you would go with a metal roof experts recommend at least a half inch minimum to ensure a weatherproof interior for your shed. Simply put pitch is expressed as rise over run just as the grade is simply this fraction expressed as a percentage. There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch. Felt shingle systems can achieve lower slopes down to about 20 degrees.

For lots more information on which roof finish to use for which slope and indicative costs. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this.

The minimum pitch for. Determine the minimum slope of the roof based on the roofing material. Remember metal roofing is more expensive than shingles. Match roof material and use appropriate slope match the roofing on the covered porch with the main roof.

Visit the shed roofing page. A 4 12 pitch being 4 inches of vertical rise over one foot or 12 inches of horizontal run.