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.

Minimum shed roof slope.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch. Visit the shed roofing page. Match roof material and use appropriate slope match the roofing on the covered porch with the main roof.

Felt shingle systems can achieve lower slopes down to about 20 degrees. The minimum pitch for. Simply put pitch is expressed as rise over run just as the grade is simply this fraction expressed as a percentage. For lots more information on which roof finish to use for which slope and indicative costs.

In roofing it is expressed in inches of vertical rise over inches of horizontal run. Remember metal roofing is more expensive than shingles. A 4 12 pitch being 4 inches of vertical rise over one foot or 12 inches of horizontal run. Determine the minimum slope of the roof based on the roofing material.

The corrugated metal roof minimum slope is 5 degrees. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this.