How To Use A Roofing Square

The measurement of a roofing square is not related to square feet, meters, yards, or miles. A roofing square is commonly used by roofing companies and approximately 100 square feet. This calculation does not alter whether it is a shingle square or a tarp square. This is because roofing squares are used to measure the costs of materials and labor as opposed to using square feet or yards. You should know how to use a roofing square.

how to use a roofing square

A roofing square is a measurement unit for determining a roof scale and is 100 square feet. The larger unit is useful to measure how much material a roof requires. The size of your roof in “squares” is usually determined, and an additional 15% ordered in backup equipment.

How To Use A Roofing Square

In addition to being a larger measuring unit, the square is used so that standardized measurements are carried out regardless of the roof layout or shape. For instance, 10′ x 10′ is about 100 square feet or one square. 4 ‘x 25’ is equivalent to one square as well. This would need one square of material to be shielded.

Who Uses A Roofing Square

The measuring form of the square-sized roofing is used only in the roofing and construction industries. Although the metric can be used by you to determine the cost of re-shaping your buildings, these activities are typically best left to an experienced roofing contractor. However, you still need to take a few steps before you try even if you have faith in your ability to determine the correct quantity of materials needed.

How To Use A Roofing Square: Measuring The Roof

Maybe you can do a few things before you even attempt to weigh the roof up. Here is how to use a roofing square.


Make sure that you’re safe.

Before you start attempting to take some kind of measurement, it is important that you find an excellent fixes lever and ensure that it is stable so that you do not fall off on your way to the roof. Once on the roof, it is essential that you wear properly tracked shoes, such as work boots.

One of the greatest mistakes people make is that they don’t properly calculate anything at all. This is particularly important when ordering roofing materials where mismeasurement will increase your costs considerably.

Calculate the images in the square.

When you have managed to calculate your diagram’s length and width without falling off, all you can do is decide the square footage of your roof before measuring the roofing value you need. To do so, simply raise the length by the width, and here you have the square footage of your house!

Calculate square roofing by square feet.

This could be the most natural part of the method. For example, if 1000 square feet of the roof were required, one square of the material would be needed.

How To Use A Roofing Square: Materials Used

Roofing content in squares is measured. Many products can be priced less than a square in units. Shingles, for example, can be sold in 1⁄3 square sheets.


A shingle square is a total number of shingles required for filling a square on a roof, regardless of how this square is measuring (for example, 10′ x 10′ or 4′ x 25′). Shingles are often sold by the bundles and usually three bundles per square, but depending on the shingles you use.


Roofing tiles are different in size, and the number of tiles on your roof will change enormously. Beton tiles are typically approximately 90 tiles per square, while clay tiles can vary between 80 and 100. Other tile types may run at or above 160 tiles per square.

How To Use A Roofing Square: The Cost

There are a variety of factors other than the materials used that may affect the total cost of installing the roof.

roofing square


When your roof is really steep, the installation can be more difficult. Steep roofs are not easy to walk, and therefore, further roof protection needs to be taken into account.


The roof size affects the materials and the work involved. The bigger the roof, the more installation work is involved, and the more materials are ordered.


Shingles are usually a cheaper option than tiles. There are different qualities and styles within each type of material. The overall cost of the roof is determined by what you purchase.


If a warranty protects your roof, a discounted price can apply. The sum protected and the steps to be taken before the roof is repaired depends on the form of warranty and with whom you have it.

It is important to note that when you buy a guarantee, you get what you pay for. A low-cost warranty will not cover the whole way or may not last as long as there is a higher-priced guarantee.


If the installers must remove older material before installing the new tiles or shingles, this will increase the roof installation cost. The processing and disposal of the old stuff may also be paid.


If your roof is challenging to reach, the time and effort involved will increase, increasing the cost of the installation ‘s labor part.

How To Measure The Roof Properly

You must measure the exact square footage of the roof to know how much material you need to do a roofing job yourself. After a few basic measurements, you can work out the area on your roof by drawing a rough diagram, dividing the roof into smaller sections, and putting them together to make your square footage as full as possible. 

You may also measure the size of the roof from the ground by measuring the area of the outside walls and multiplying the amount by the slope of the roof.


Look for a secure path to the building. To measure your roof accurately, you have to be on it. If you have a window within the roof, use it to reach a safe area. Otherwise, an extension ladder must be mounted and carefully climbed on the wall.

Bring with you a tape measure, pencil, notebook or paper pad. You will need these items to record measurements of your roof. Make sure your ladder rests on a flat, stable board. If necessary, keep an assistant to stabilize it as you ascend.


Measure the central roof portion on each side. Stretch the calculation over the roof’s outer edges to find the length and width in the feet. You only need to record length and width for square or rectangular roofs. Write down the dimensions of each individual plane for inclined sectional roofs. Fulfill one side at a time before moving to other areas. At this point, you are just looking for the outer perimeter.


Separately measure any additional structures. Do not forget to consider the length and the width of those areas if your roof features architectural features such as hip ridges, valleys, or dormers. Such measures will affect your estimates and thus the amount of material you need to buy.

Accurately report the measurements. Note them in your notebook or on a different sheet of paper while you are taking your measurements. These figures will be used for later measuring the total square footage of the building. Write each analysis down to 1⁄2 inch (1.3 cm) as it appears on your tape measure.

Don’t round up or down the roof measurements. It is done until the number of shingles you need is calculated. Until you begin calculating and adding, the precision of your final calculation should be removed.


Draw a diagram on a large piece of paper on your roof. Develop a rough top-down roof drawing. Pencil in outward shape, flesh out your scheme with details such as ridgelines, hips, valleys, and dormers until you have a rough depiction of your roof’s basic layout.

Use the steps you have taken to mark your diagram. Write down the length and width of each section of the roof, beginning at the eaves’ external edges. Then bring the ridgelines down on each top, hip and valley.


Divide the roof into simple parts. At this point, you may find that several aircraft on your roof is unusual. The easiest way to tackle this problem is to draw a few additional lines to make complex forms simple. For instance, drawing a line across the pointed end of the roof produces a long rectangle connected to a small triangle.

Multiply the length by the width to find the rectangular field. It is easy to calculate the square footage of these pieces. Only subtract the dimensions of length and width. Take a note on your diagram of the square footage of each square or rectangular area.


Build the rest of the triangular pieces. It’s not as hard as you would imagine. Use a regulator first to draw a line from the middle of the triangle ‘s longest side (the eave) to the top (the summit of the roof). Then subtract the length of this central line on the longest side. Divide this number by 2 to get the triangle square footage.


Add the areas in each section to get your entire square images. Take every area calculation you have deduced one by one through a calculator. The total square footage of your roof is the sum of those estimates, which can then be used to calculate how much material you need for your project.


To measure your materials divide your square footage by 100. Usually, roofing materials are packed in “squares,” each equal to one hundred square feet (9.3 m2) of the roof area.

Final Words

With so many new homes and commercial properties constructed every day, the need for replacements of roofs has increased dramatically. If you are talking about a roof substitution, you should also learn precisely what a roof substitution is.