Minimum Shed Roof Slope

Remember metal roofing is more expensive than shingles.

Minimum shed roof slope.

The minimum pitch for. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. Match roof material and use appropriate slope match the roofing on the covered porch with the main roof. For slopes below 20 degrees systems such as epdm fibreglass metal roofing can be used.

Felt shingle systems can achieve lower slopes down to about 20 degrees. Simply put pitch is expressed as rise over run just as the grade is simply this fraction expressed as a percentage. Visit the shed roofing page. 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.

There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch. In roofing it is expressed in inches of vertical rise over inches of horizontal run. It is the recommended slope as there is no guarantee if you opt for flatter pitch than this. Determine the minimum slope of the roof based on the roofing material.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Minimum pitch for corrugated metal roof corrugated roofing is an amazing choice for conventional pitched roof despite having the severe limitation about the pitch.