Make Roof Pitch Steep

The pitch of the roof is determined by the vertical rise in inches for every horizontal twelve inch length.

Make roof pitch steep.

The way pitch also known as roof slope is measured is rise over run. A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible. Most roof s have a pitch in the 4 12 to 9 12 range. Single ply or torch down roof structures are made specifically for flatter rooftops and cannot be used when building a steeper roof.

Pitch for a gable roof the most common is generally 1 4 or 1 3. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. A flat roof would have a 2 12 pitch while the average roof pitch would be between 4 12 and 9 12. Pitch is the slope or angle from the wall plate to the roof ridge line.

Which is equal to 1 4 or 1 3 the total span of the building not counting any overhang. Any pitch higher than 9 12 is considered a steep pitch. Meanwhile tile and shingles do better on steep pitches while low pitches may need metal or concrete roofing instead limiting your design options. Roof pitch is the measurement of roof steepness.

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. Pitch is a measure of the steepness of a roof. The table below shows common roof pitches and the equivalent grade degrees and radians for each.