Which Way To Pitch Roof Based On Wind

Visually this roof appears flat.

Which way to pitch roof based on wind.

Because mid range slope roofs withstand strong winds better than steep roofs keep the roof pitch below 6 12 and greater than 4 12. Roofs on victorian era houses were often sharply angled with a steep pitch. Steeper slopes increase the sail effect that makes them susceptible to wind. But there are things you can do to protect your roof and therefore your home.

The hip style roof can stand up to high winds when a storm comes. 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. A roofing system isn t just 5 smart tips for choosing the best roof for high winds read more. Pitch is usually described as a ratio of vertical rise in inches for every 12 inches of horizontal surface.

Building a 4 slope hip style roof has been found to lessen the load of the wind on the house. It was fashionable for modern style homes built in the 1960s to have little pitch just a barely negligible slope to help drain water. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. And ironically one of the biggest factors in damage to a roof is windblown debris often the debris of other people s failed roofs.

This pitch might be as low as 1 12. Lower slopes don t handle wind driven rain as well. A flat roof would have a 2 12 pitch while the average roof pitch would be between 4 12 and 9 12. The pitch of the roof is determined by the vertical rise in inches for every horizontal twelve inch length.

A roof at 9 12 is considered a very high pitch. Pitch is a measure of the steepness of a roof. N use wind resistance ratings to choose among shingles but do not rely on ratings for performance. 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.

Build a moderately pitched hip roof. Any pitch higher than 9 12 is considered a steep pitch. Think of a classic addams family haunted house with its soaring peaks and you have a. A 2 12 roof which rises two inches for every 12 inches covered is considered a very low pitch.

A single storm can destroy a roof in many cases.