Importance of a roof pitch.
Minimum workshop roof pitch nc.
The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.
Asphalt shingles require a minimum roof pitch of 2 12 or greater.
The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible.
Where the roof sheathing is less than 3 4 inch 19 mm thick the.
Minimum slope of metal roof in nc.
Let us recap on the minimum roof pitch required for each type of roofing material.
However you can only use this pitch with built up roofing or specialized synthetic roofing.
You need to consider the slope requirements of each panel to determine this minimum slope.
The way pitch also known as roof slope is measured is rise over run.
I am only going to be using this building for max 10 years.
The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.
I am building a tiny house i want to push the slope as shallow as i can.
The values given here.
Nc doesn t rain allot no snow.
Mechanical code ncmc north carolina state building code.
Metal roof shingles require a minimum roof pitch of 3 12 or greater.
I will be using metal roofing or congregate steel.
Express the slope of a metal roof by a ratio which indicates the pitch of the roof.
Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch 10 mm diameter head astm f 1667 of a length to penetrate through the roofing materials and a minimum of 3 4 inch 19 mm into the roof sheathing.
The chief reason for having a roof pitch is to redirect water and snow away from the roof and avoid any percolation that might result from stagnation of water on the roof.
Assume i don t have to worry about building codes.
The minimum slope of a roof depends on the roof s profile.
Building code ncsbc north carolina state building code.
State construction office sco north carolina state building code.
The profile is the shape taken by the sheets when you bend them to form panels.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
Roof pitch is the measurement of roof steepness.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
Existing building code ncebc north carolina state building code.
So if your roof rises 4 inches for every 12 inches of horizontal length then the pitch of your roof is expressed as 4 12.
