Suggested Roof Pitch

The ibhs recommends a 4 to 6 pitch roof.

Suggested roof pitch.

Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. The pitch of your roof also helps determine the type of materials that can be used on your roofing system. It can be assessed in two ways either as the angle the rafter makes with the horizontal or the proportion between the rise and the run of the roof. Understanding a roof s pitching can be quite tough if you are just getting started and working with a roofer can leave you a little bit unsure about what is being suggested with regard to the job there s so much to learn that it can become a bit baffling.

Roof pitch is often expressed as a ratio between rise and run in the form of x 12. This is for the top level of a 3 story building that is 26 by 64. One engineer recommends a 12 12 pitch for the new roof while another recommends a 7 12 pitch. The most commonly used roof pitches fall in a range between 4 12 and 9 12.

One of the most important aspects of trying to get the roof right though is the pitch. It is an essential element to ensure water drains properly off of your roof. The primary reason roof pitch exists in the first place is to redirect water. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.