Roofing 101: How Many Bundles of Shingles in a Square

Shingles are a common roofing cover, especially in the United States and Europe. If you plan to do some roofing work with shingles, you must count how many bundles you need to cover your roof.

How Many Shingles in a Bundle

The main measurement you need to determine the amount of shingles is the roof’s area, specifically the square footage. This is typically measured in roofing squares, each equaling 100 square feet.

While per roofing square equals 100 sqft roof width, how many bundles of shingles in a square?

Read also: What is a Square of Shingles and Square Footage on the Roofing Area?

How Many Bundles of Shingles in a Square

As mentioned earlier, the measuring unit of roofing is called square; it is equal to 100 square feet of your roof or around 9.29 meters square. The most commonly used type of shingle, especially for an asphalt shingle roof project, is the strip shingle, also known as a three-tab shingle, typically packed with three bundles per square.

So, that should answer your question on how many bundles of shingles are in a square: there are three bundles per square.

How Many Shingles in a Bundle

Since you cannot fall short on shingles to cover your roof, you need to know the exact number of shingles you need. But the problem is, you may be too lazy to know how many shingles for each bundle. Well, you are not the only one.

It takes a different number to determine how many shingles in a bundle. The number depends on which bundle you are choosing.

Now the question is different: how many shingles in a bundle?

Per a common three-tab shingle bundle, you will have 29 shingles with standard size (12 in. x 36 in.). You will get 87 shingles if you buy a square of three-tab, standard-sized shingles. It may be a little confusing – kindly take your time to comprehend it as a whole.

Let’s delve more into it. After knowing the number of bundles in a square and how many shingles come in a bundle, you may wonder, ‘how do I calculate how many shingles I need?’

How Many Bundles of Shingles in a Square

To count your need for shingles, as usual, you will need to know the width of your roof. You can easily add the width if the roof consists of several planes.

But how to count a complex roof? Indeed, it is not as easy as a rectangular gable roof. But whatever type of roof it is, the thumb rule is to add each plane’s width.

Below is how to count how many shingles you need in a complex roof.

  1. You can start with making a simple sketch of your roof. Then, break the sketch into several distinct planes, consisting of rectangles and triangles.
  2. Using this, then count the width of each plane.
  3. After that, sum those numbers to count the total width.
  4. Make sure to convert the measurement into square feet.
  5. Suppose you find that the summarized number of widths has decimals in it; simply round it up to the nearest hundreds. For instance, if you get 3,365.85 sqft, you can round it to 3,400 sqft.
  6. Then, divide the number by 100 (as 100 sqft = 1 roofing square)
  7. That is the exact number of shingles you need. To ensure accuracy and avoid running short on shingles, particularly for eaves and ridges, add 10% to your total. For complex calculations or installations, consulting a professional roof contractor is advisable.

While a shingle calculator can be a helpful tool, manually calculating your needs is often more accurate, especially for complex roofs where standard calculators may not provide precise results.

How Many Architecture Shingles Come in a Bundle?

Once you find out bundles of shingles in a square, you may wonder, is it the same as all kinds of shingles? Let’s take an example from architectural shingles.

Read also: Are Architectural Shingles Worth Extra Cost.

How Many Architecture Shingles Come in a Bundle

Well, you may find many different answers regarding this topic. Some manufacturers sell 4 bundles for a square while others only sell three. The number of shingles per bundle is also different – some come with 22, the other comes with 26.

Read also: How to Install Architectural Shingles over 3 Tab Shingles

Since manufacturers sell different numbers per bundle for architectural shingles, it is always important to count your roof’s width beforehand. Also, it is important to know how many bundles of shingles are in a square.

When planning your roofing project, understanding the roof size and the specific requirements for your chosen shingles is crucial. Different shingles may require different quantities per square, so it’s important to do thorough research or consult with professionals at your local store. Remember, a well-planned project leads to a smoother execution and better results.

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RoofLast is an experienced author and roofing expert. With years of practical experience in the field authored several informative articles on various aspects of roofing, including installation, maintenance, and repair