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.
In roofing it is expressed in inches of vertical rise over inches of horizontal run.
Felt shingle systems can achieve lower slopes down to about 20 degrees.
A 4 12 pitch being 4 inches of vertical rise over one foot or 12 inches of horizontal run.
The minimum pitch for.
Visit the shed roofing page.
Determine the minimum slope of the roof based on the roofing material.
For lots more information on which roof finish to use for which slope and indicative costs.
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.
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.
It is the recommended slope as there is no guarantee if you opt for flatter pitch than this.
The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.
There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch.