Which Way To Pitch Roof Based On Wind

High wind regions key issues n special installation methods are recommended for asphalt roof shingles used in high wind coastal regions i e greater than 90 mph gust design wind speed.

Which way to pitch roof based on wind.

This pitch might be as low as 1 12. Think of a classic addams family haunted house with its soaring peaks and you have a. The pitch of the roof is determined by the vertical rise in inches for every horizontal twelve inch length. N use wind resistance ratings to choose among shingles but do not rely on ratings for performance.

Flat roofs increase uplift forces on the overhang and are more prone to leaks. Because mid range slope roofs withstand strong winds better than steep roofs keep the roof pitch below 6 12 and greater than 4 12. It was fashionable for modern style homes built in the 1960s to have little pitch just a barely negligible slope to help drain water. Any pitch higher than 9 12 is considered a steep pitch.

Build a moderately pitched hip roof. A 2 12 roof which rises two inches for every 12 inches covered is considered a very low pitch. And ironically one of the biggest factors in damage to a roof is windblown debris often the debris of other people s failed roofs. Pitch is usually described as a ratio of vertical rise in inches for every 12 inches of horizontal surface.

Roof pitch refers to the angle of your roof or how steeply it slopes. A typical 2 slope gable roof is often times cheaper to build but it allows the wind to catch the roof and it is much more easily blown away. But there are things you can do to protect your roof and therefore your home. Roofs on victorian era houses were often sharply angled with a steep pitch.

Visually this roof appears flat. Lower slopes don t handle wind driven rain as well. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. A single storm can destroy a roof in many cases.

A roof at 9 12 is considered a very high pitch. The hip style roof can stand up to high winds when a storm comes. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. Steeper slopes increase the sail effect that makes them susceptible to wind.

A roofing system isn t just 5 smart tips for choosing the best roof for high winds read more.