Standard Hip Roof Pitch

Selecting the roof pitch.

Standard hip roof pitch.

You write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run. There are always some limitations in the selection of the height. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. What is the best pitch for rebuilding a post irma hip roof.

I had a gable before with a solid ring beam before irma. Most roof s have a pitch in the 4 12 to 9 12 range. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. A hip roof design refers to a roof where the roof sides slope downwards from a middle peak with the rafter ends meeting the exterior walls of the house.

One engineer recommends a 12 12 pitch for the new roof while another recommends a 7 12 pitch. The most daunting task is selecting the height. As aforementioned there is no standard pitch of a roof. But the most commonly used pitches range between 4 12 and 9 12.

Each of the four sides of the roof slope downward there are no upright or vertical parts no gables etc on a hip roof. The tall steep roofs are high priced and construct of those are complicated. The most commonly used roof pitches fall in a range between 4 12 and 9 12. 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.

The ibhs recommends a 4 to 6 pitch roof. Modern residential hip roof construction uses common pitch ratios in general. A common range is given from 1 12 to 4 12 whereas conventional dimensions vary from 4 12 to 9 12 but the steep roofing technique follows slope above 9 12 with additional fasteners. The height and rake of a roof are one of the important factors.

The most common hip roof pitch ratios fall between 4 12 and 6 12 although variations occur based on factors such as snow rain and wind conditions which is because steeper hip roof pitch ratios allow for less accumulations of snow and rain on the roof and lower ratios provide less wind resistance. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The typical roof slope follows specific materials and design techniques to ensure perfect safety from leakage. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

This is for the top level of a 3 story building that is 26 by 64.