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What Is A Roofing Square? A Comprehensive Guide

What Is A Roofing Square? A Comprehensive Guide

A roofing square is the most common unit of measurement for materials that are used to cover roofs. There’s a tool used for convenience but there’s also a quick way to determine the answer:

What is a roofing square? A roofing square, often known as a square of roofing shingles, is the quantity of material required to cover 100 square feet of roof area. Contractors, manufacturers, and suppliers use the phrase as a shorthand to define the size of a roof. A 2,000 square foot roof, for example, is 20 square.

Roofing Square Measurements

Step 1: Measure the length of your roof in feet.

Step 2: Multiply this number by itself.

L*L=Square feet of roofing

Example: Your house is 25′ long and 10′ wide, so 25×10=250 square feet of roofing. You will need to buy about 1000 square feet of roofing to cover your entire house.

Some roofs, like a hip roof, are not a perfect square and so may require more or less roofing material. Always consult with a professional to get the most accurate measurements for your specific roof.

Why is it important?

A roofing square is an important measurement for roofers. It is the most common way to measure a roof’s size. Roofers use this measurement to calculate the amount of material they will need to cover a roof. This measurement is also used to price a new roof. A roofing square is equal to 100 square feet.

Roofers will measure the length and width of a roof and divide it by 100. This will give them the roof’s square footage. Most roofs are not perfect squares, therefore this measurement may be difficult to calculate without a roofing square ruler or tool such as a credit card that is 100-square inches long.

Price and Costing

The cost of a new roof is often based on the square footage of the roof. The price per square foot can vary depending on the material that is used; for example, metal roofs may cost more than asphalt.

People who want to get estimates for their roofing project can use these calculations to give an estimate of how much they will need and what the estimated price of labor and materials will be.

Tips to remember:

  • A square foot is equal to 100 square inches.
  • Roofs are typically measured in squares, not feet or yards.
  • “Square Footage” refers to the dimensions of a roof’s surface area, NOT its height or depth.
  • The average cost for materials needed to cover your house can vary depending on size and type of material used.
  • A roofing square or ruler is an important measuring tool for roofs and can help you estimate how much materials will be needed, as well as pricing out the cost of labor. It’s usually easier to compute with a 100-square inch long card than it is without one.

Factors affecting the computations:

Roof shape

The slope of the roof can affect how many squares are needed to cover it, as well as its price. A steep-sloped roof will require more squares than a flat one. This is because there needs to be enough material for each square foot of roofing not only on top but also along the sides that meet together and can be seen from below.

Weather conditions

If there is a lot of rainfall in your area, you may need to purchase more roofing material as it will wear down quicker. Roofing squares are meant to help with estimation purposes and should not be the only factor when purchasing materials. Always consult a professional for the most accurate measurements and advice.

Prices are based on average material

The prices for materials are estimated at the time of writing this article. They may vary depending on where you live, as well as what is available in your area. Always consult a professional to get accurate estimates and pricing before beginning any roofing project or purchasing materials.


Q: How much does it cost per square foot for materials needed to cover my house?

A: This can vary depending on the size and type of material used; however, most materials cost an average of $0.50 per square foot.

Q: What is the standard size for a roofing square?

A: A roofing square is equal to 100 square feet.

Q: How can I measure my roof if it’s not a perfect square?

A: You can use a credit card that is 100-square inches long to measure the length and width of your roof. Once you have these measurements, divide them by 100 to get the square footage.

Q: My roof is a hip roof, will I need more or less material?

A: This can vary depending on the size and shape of your roof; however, it typically needs more material.

Q: How can I estimate how much my new roof will cost me?

A: You can estimate how much your roofing materials will cost you by finding the square footage of your roof and multiplying it by $0.50 per square foot. This is just an estimation; always consult with a professional for more accurate pricing information.

Q: What is a roofing square ruler?

A: A roofing square ruler is a tool used to measure the size of your roof. This ruler has measurements on it that are equal to 100 square feet. Roofers use this ruler in order to calculate how much material they need for their project and also to price out labor costs associated with the job at hand.

What Is A Roofing Square? A Comprehensive Guide