measure roofs

Roof Measure

When you use Sky Roof Measure, you always have the option to call in your pinch hitter with our service. We’ve made it easy for our users to measure roofs themselves, but when they need some help with a complex, cut-up roof, or simply don’t have time to measure the projects on their calendar, Sky Roof Measure has their back.

                         Call Us – (315) 926-1777

Don’t worry too much if you don’t know how to measure a roof for shingles. Your roofer will measure the surface of your roof to determine the total square footage, which will dictate how many shingles must be purchased to fully cover the roof’s planes.

But if you’re curious how the measuring process works, think back to your geometry classes in school. To calculate a rough estimate, follow these steps:

  1. First, you must measure the length and width of each plane of the roof, including dormers. If the planes aren’t rectangles, this may be complicated.
  2. Next, to calculate the square footage of each rectangular plane, multiply the length by the width. For example, if a plane is 120 feet long and 100 feet wide, it’s 12,000 square feet.
  3. Finally, add together the square footage of each plane to calculate the total square footage of the roof. So if there are two planes that both measure 12,000 square feet, the total square footage of the roof is 24,000 square feet.

Drone Technology Delivers a Rich Dataset and Powerful Return-on-Investment

Drones are a far faster and more cost-effective way to gather information and turn it into actionable data. In fact, end-to-end drone solutions have proven to be at least three times faster than traditional methods.

But the return-on-investment for drones on rooftops goes beyond just the savings in time and human resources. Drones deliver a far more productive set of data compared to what can be gathered by manual measurement.

Drone mapping doesn’t just deliver data on roof planes, slopes, and areas. A detailed point cloud captures the entirety of the roof in high-resolution detail, giving a powerful set of data to residential and commercial roofers, solar installers, and anyone looking to do design work on top of drone-based roof data. And all of this data is readily shareable in a variety of export formats so that you can integrate it with your favorite industry tools.


Calculating roof slope is done by calculating the number of inches your roof slope rises vertically for every 12 inches it extends horizontally. For example, if your roof rises 7 inches for every 12 inches of horizontal run, then your roof has a 7-in-12 pitch. The standard pitch of most residential roofs ranges between 4-in-12 and 9-in-12.

It’s good to know the measurements of your roof slope, particularly if you’re considering having any maintenance work done to your roof or want any new features such as skylights or rake boards installed. It’s best not to make any mistakes when calculating your roof slope, since doing so could lead to headaches down the road.

Pitch and slope do not mean the same thing. Slope is the ratio measured in inches per foot. Because slope affects how water is shed from a roof surface and determines the limits for using asphalt shingles, understanding how to measure the slope of a roof may be valuable to a home inspector.

Now how about nails?

Generally, you should use four nails per shingle in the field of the roof, and 5 nails per starter shingle. For regular three-tab shingles, this would require 320 nails per square for field shingles. Multiply the number of starter shingles required by 5 to determine the number of nails required to fasten starter course.

For high wind areas or when shingles are being applied to a mansard, six nails per shingle are required, or 480 nails per square. This is based on 80 shingles per square.

Other styles of shingles may require more or fewer nails per shingle and may have more or less than 80 shingles per square. Refer to the application instructions on your shingle wrappers for the correct nailing pattern.

Always check what local building code dictates for fasteners. Ask your dealer for the correct amount of nails for your size roof, in the length you specify.

Leave A Comment

Your email address will not be published. Required fields are marked *