How To Measure For A Metal Roof

How To Measure For A Metal Roof

Learn How to Measure for a Metal Roof: Accurate steps for estimating roofing material. Get started with your free quote!
Written by 
Dumitru Nicolaescu
Updated:
September 11, 2024

Metal roofing panels are a significant investment, especially amid pricey construction or renovations. Thus, calculating the needed panels before purchasing is essential. If unsure or seeking expert advice, reach out to GreenAttic Insulation.

How To Measure For A Metal Roof?
How To Measure For A Metal Roof?

How To Measure For A Metal Roof?

When measuring your roof, start by sketching an overhead roof view, focusing on a rough layout for reference. Drawing a top-down sketch, marking all features clearly in inches and feet. Include attached porches and overhangs to be covered. Measuring roof slopes is optional, but useful. Remember, the roof area differs from the living area. The sloped roof, overhangs, and attached garage need consideration.

Lastly multiply the width and length panel counts for total coverage on one roof half. For unsymmetrical roofs, repeat the process for each section and combine panel counts for the final answer.

Measure your roof's length by gauging from one edge to the other. Additionally, obtain the length of a single metal panel from your roofing contractor. Calculate panel count by dividing roof length by panel length (e.g., 30-foot roof / 1-foot panel = 30 panels).For asymmetrical roofs, repeat steps two and three for the other side.

Accurately measure roof width, including the slope, from fascia board to peak.

When preparing to measure for metal roofing, follow these organized steps for precision:

  1. Begin by sketching a top-down view of your roof – dimensions don't need to be precise yet.
  2. Measure your roof's length, noting the measurement for the next step.
  3. Determine the width of the metal. Divide the roof length by metal width.
  4. Repeat Step 3 for the other side, accounting for any slight size differences.
  5. Measure from the fascia board to the ridge for panel length on one side of the roof. This completes the measurement process.

Additionally label protrusions like chimneys and measure them. Don't forget skylights and recessed areas.

Measure roof deck dimensions, not shingle edges. Order hip and valley panels slightly longer (6" to 12") for flexibility during installation.

Utilize a similar process as step 3 to determine the number of panels needed for roof width.

How Many Roofing Shingles Do I Need?
How Many Roofing Shingles Do I Need?

How Many Roofing Shingles Do I Need?

For estimating roofing material like shingle bundles or underlayment rolls, you must determine the total square footage of your roof. Here's how:

  • Measure length and width of each roof plane, including dormers.
  • Multiply length by width for each plane.
  • Sum up the square footage of all planes.
What Is A Bundle Of Shingles?

What Is A Bundle Of Shingles?

A collection of roofing shingles is referred to as a bundle.

For laminate or architectural shingles, commonly used in roofing, there are typically three bundles per square:

3 bundles = 1 roofing square

So, for instance, in a scenario with a 2400 square foot gable roof, you would require 72 bundles of shingles (24 squares x 3 bundles per square = 72 bundles).

How To Calculate A Roofing Square

How To Calculate A Roofing Square

Before you begin, ensure roof access safety. If unsure, consult a roofing expert like Green Attic Insulation. With measuring tools ready, follow these steps:

  1. Identify the planes: Count the planes your roof comprises, varying with architectural intricacies.
  2. Measure each plane: For each plane, determine its length and width.
  3. Multiply both for the plane's square footage (e.g., 35 ft. x 36 ft. = 1260 sq. ft.).
  4. Sum up: Combine all plane square footages for a total (e.g., 1,260 sq. ft. + 1,260 sq. ft. = 2,520 sq. ft.).
  5. Find squares: Divide the total square footage by 100 to ascertain squares (e.g., 2,520 sq. ft. / 100 = 25.2 squares).
  6. Account for slope: Consider slope, impacting material needs.
  7. Calculate slope by vertical rise for every 12 horizontal inches (e.g., 4 inches rise = 4:12 slope).
  8. Use online calculators for ease. When calculating squares needed, add 10% for potential errors and installation considerations.

iRoofing stands as the only roof measuring appenabling work from satellite, drone, high-resolution aerial images, or blueprints.

Metal Roofing Chicago
Metal Roofing Chicago

Metal Roofing Chicago

Modern metal roofs offer the allure and elegance of traditional roofing materials, while being notably more resilient, durable, and enduring. There's undoubtedly a metal roof style that harmonizes perfectly with your home's aesthetics.

Opting for metal roofs proves advantageous, as they provide enhanced safeguarding against elements like hail, fire, and wind. In the Chicago area, Green Attic specializes in top-tier residential metal roofing. As the premier metal roofing Chicago, we're your top choice for installation and repair. Schedule an appointment with us to experience our expertise firsthand.

With our expert installation, your home receives comprehensive protection from top to bottom. Our commitment lies in both exceptional workmanship and unmatched service. We prioritize restoring comfort to your home, aiming for your satisfaction.

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