A roof with a high pitch is commonly 6/12 – or 6 inches in height for every 12 inches across. When making roof decisions, many people think these roofs require more materials and cost more money. Thus, they are often tempted to go with a low slope. However, 6/12 and higher rooftops are valuable—and for good reason.

## Is a 6 12 Roof considered steep?

The 6/12 roof pitch is by far the most common residential roof pitch. It is steep enough to shed water quickly while also being what we refer to as “walkable”.

## What is a good pitch for a house roof?

For most home styles, roof pitches fall in a range 4/12 (a moderate) slope up to 8/12 (fairly steep).

## What is the steepest roof pitch allowed?

OSHA defines a “steep roof” as any roof with a rise/run ratio over 4:12 (18.43 degrees). While most standard-pitched residential roofs seldom exceed a 12:12 pitch (45 degrees), the landscape is occasionally marked by a design which harkens back to earlier times, when much greater roof pitches were more common.

## Is a 4/12 roof pitch good?

As well, a slope of 4:12 is most commonly considered the lowest slope for “standard shingle installations”. Most manufacturer and industry recommendations require, or at the very least recommend, special underlayment or other considerations on roofs between 2:12 and 4:12.

## What is the disadvantages of a steep pitched roof?

Steep-slopes have a few disadvantages. One important weakness is that they decrease utility space on the roof. … The most common problem arising from steep-slope roofs is clogged gutters that result from the run-off debris. This requires regular cleaning.

## What does a 1/12 pitch mean?

1 over 12 is the lowest of the low slopes. You’ll often find a 1/12 pitch on back patio porches or at the top of an older gambrel roof. 2 over 12 is a little steeper than a 1 over 12 pitch, but not by much. In degrees, low slopes are between 4.76 degrees and 9.46 degrees.

## How does roof pitch affect cost?

A slope of 6/12 could add nearly another thousand dollars to the price. If you were to choose a 9/12 slope, the national average for a 40 by 50-foot roof would be more than $8,300. A high slope of 12/12 could cost $10,000 or more.

## What roof pitch is 30 degrees?

What roof pitch is 30 degrees? A 30° roof pitch is roughly the same as a 7/12 roof pitch. To convert from degrees to the American ratio: Find the tangent of the angle, tan(angle).

## Is a 3/12 roof pitch good?

Any roofs up to 3:12 are generally considered “low slope.” In the residential arena, we see lower slope roofs as part of the home’s architectural design. … Then, when you get into roofs of 3:12 or greater pitch, most other metal roofs can be used and that generally is the pitch requirement for asphalt shingles as well.

## What does a 4/12 pitch mean?

A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a “4 in 12” slope. … The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. For example, a “4 in 12” slope can be expressed as the ratio of 4:12. A “6 in 12” slope is expressed as 6:12.

## Is there a minimum roof pitch?

Traditionally, a minimum roof pitch of 20° was recommended in BS 5534, but modern tiles and slates have now been designed for applications as low as 15°. It is uncommon to find a roof below 15° but for those very low pitch applications, there are interlocking clay pantiles available, suitable for use down to 12.5°.

## What pitch roof can you walk on?

Common Roof Slopes Expressed in Rise/Run and Angle + Slope expressed as Grade

Common Roof Slopes Expressed in Rise/Run and Angle + Slope expressed as Grade | ||
---|---|---|

Roof Slope Expressed as Rise / Run in Inches | Roof Slope Expressed as an Angle | Walkability |

0 / 12 | 0 ° or 180 ° | Easy to walk on |

1 / 12 | 4.76 ° | |

2 / 12 | 9.46 ° |

## What does a 4 pitch roof mean?

Roofs require slope for adequate drainage, and even so-called flat roofs must have some incline. A 4/12 roof pitch indicates the roof rises 4 inches in height for every 12 inches, as measured horizontally from the edge of the roof to the centerline.

## What degree cut is a 4/12 pitch?

Roof Pitch Degree Table | |
---|---|

1-12 | 4.76° |

2-12 | 9.46° |

3-12 | 14.04° |

4-12 | 18.43° |

## Is a 4/12 pitch roof steep?

4/12 is quite typical. Anything under 3/12 is a low pitch roof. Anything above 6/12 is a steep roof pitch since it becomes harder to walk on the roof.