Roof shingle estimator

Roof Diagrams

Designing a custom home is a dream for many. Considering the various important facts, figures and features that create a safe, legal and livable home are vital to successfully completing a building plan. From a foundation (or footprint) you develop a floor plan, schematics and a roof design. The roof design is not simply a finishing touch to cover the home, but a protective barrier from sun, wind, rain, run off, snow buildup and more. Often, the roof can present a larger visible surface area than the walls, so adequate planning must be undertaken. Drawing a suitable roof design will take a mastery of measurements and facts that pertain specifically to the properties location, weather and size.

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The Roof Lines – ridgelines, hip lines, valley lines, gable and eaves overhang lines – at the ends of building sections and at junctions, provide information regarding the required shape of the roof.

Roof shapes are greatly influenced by the varied properties of specific climates, regions, materials, and architectural styles. Because of the variety of design strategies, roof terminology is flexible and can range from flat roofs to steep pitches, domes, arches, or complex combinations of angles.

Aerial measurement

major factor in home plan design hinges on the slope of your roof.  Some architectural designs such as those with Gambrel, Polynesian or Mansard roofs may require a combination of pitches to achieve your look and/or purpose when drafting house plans.  A shed roof resting on you main roof is another fine example of mixing roof slopes on one building. No matter what roof pitch you are looking for, you may find this table useful to use as a guide, keeping in mind that you are not limited to the slopes.


You will be creating four elevation views, one for each side of the house (regardless of whether your home is of a conventional shape or not). Usually these drawings are drawn to a scale of 1′ : 1/4″. Check with your builder and planning department as to what scale they prefer these drawings to be.

For each side of the house, elevation drawings should show:

  • Each wall length and its height,
  • The roof width and height,
  • The visible portion of the foundation,
  • Any exterior features (such as decks, porches and stairs),
  • Window and door trim,
  • Eavestroughs,
  • Exterior wall and roof finishings (e.g. wood siding on exterior walls, asphalt shingles on roof)
  • The finished ground level.
Satellite roof measurements

What Is A Roofing Square? Roofing Calculator

Roof surfaces are measured in “squares”. A roofing square is equal to 100 square feet of the roof. To determine the number of squares on the gable roof example in this post, divide its total of 12,000 square feet by 100 (12,000 ÷ 100 = 120). This means you would need 120 squares of shingles to cover that roof.

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Squares are also used to identify the amount of underlayment your roof requires. So, using the same example and formula above, you’ll also need 120 squares of underlayment for a roof with a square footage of 12,000. Most—if not all—companies that offer residential roofing in Naperville, Illinois and in other cities in the U.S. offer underlayment in rolls of four (4) squares each. As such, if your roof requires 120 squares, you will need 30 rolls (120 ÷ 4 = 30) of underlayment from roofers.

Roofing Pitch for Square Roof Area

Finally, the more complex part, measuring your roof’s pitch.

  1. Estimate or calculate the pitch of your roof .
  2. Climb to the peak of your roof. Bring a two foot level. Hold your level outward, perfectly horizontal from your roof, so the bubble is in the middle of the indicator glass. Then, using a tape measure, determine how many inches are between the middle of your level and your roof. 
  3. Multiply the number of roofing squares by the following digits below.

Low Pitch: 1.07 x Roofing Squares
Medium Pitch: 1.185 x Roofing Squares
High Pitch: 1.36 x Roofing Squares

Please note that we recommend letting a professional roofer do the calculations for your own safety!

Calculating a roofing square of your roof is very important, if you’re communicating with someone from the industry.

If you ever need help with roofing square or anything related to the roofing, you can simply approach the Sky Roof Measure, a company that has been serving local residents with 5 star roofing measurement services and an excellent track record.


Drone Roof Measurements : Roof Inspections

The rising popularity of drones in the roofing industry is no accident. Professional contractors everywhere are seeing the advantages of merging technology with their toolbox; allowing increased safety, higher accuracy, less headaches, and the type of modern presentation clients now expect. Simply put, combining high-resolution drone imagery with a powerful roof measurement application  means more sales. The days of spending 30+ minutes on a roof to calculate measurements – only to lose the bid – are becoming a thing of the past.

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Why Use Drones for Roof Measurements?

One of the main benefits of drones is their size and maneuverability.  This feature allows them to fly a few feet away from various building types and capture high-resolution imagery for residential, commercial, flat and metal roofs.

How Does it Work?
Once a drone inspection has been completed by a pilot in our on-demand network or by an in-house carrier pilot using our drone inspection software platform, all of the photos from the inspection are encrypted and uploaded into our cloud storage system.  Photogrammetry software, powered by a lot of computing power, processes this imagery into a 3D point cloud, 3D model, and 2D  map (think Google Maps but much higher resolution). The 3D point cloud data is then interpreted to produce measurements, such as:

  • Perimeter
  • Surface Area
  • Pitch

Drones eliminate the need for using a ladder, reducing the likelihood of accidents. Using a drone is also a more cost-effective method to obtain information, which can help you create efficient roofing solutions. It is also three times faster than a traditional roofing inspection. 

Minimizes Workplace Hazards

Did you know that falling is the leading cause of death on construction sites? Using drones minimizes the risks for potential injuries and mishaps that can happen to dedicated teams of construction workers. In case specialists miss important information, they won’t need to return back to the site just to collect data.

Drones have become a valuable resource to not only increase efficiency, but to also keep employees from needing to complete dangerous tasks and out of harm’s way.

That’s never been more critical than during the current COVID-19 pandemic, where drones have become a vital resource that allow companies to continue operating while facing disruptions to their labor force as well as observing the need for social distancing amongst their employees.