Roof shingles how many bundles to a square

It is easy to see why so many leave this up to professional roofing contractors. While this does make a lot of sense, there can still be a good reason to know how many roof shingles you need for your roof. So you can obtain a good understanding of what you will need, here is all you need to know about calculating the number of bundles and total shingles needed for your roof, regardless of who installs it.

You will find roof shingles sold by the bundle and by the square. It takes a square of shingles to cover sq. Shingles come pre-packed in either paper or plastic-wrapped bundles, and they design them to be an ideal weight for one person to carry. Using this method, if you opt for heavier duty shingles such as you may need in high wind areas, you will need more bundles per square, because of the weight.

The most common you find apply to three-tab shingles and take three bundles of shingles for each square. It can also include some of the lighter weight laminated shingles. Once you look at the more substantial three-tabbed variety, these require four per square and sometimes possibly five to cover the same square.

Once you have a three-bundle pack to cover a square, you will have 29 x 12 inches by inch standard-sized shingles per bundle. The hardest part is how you determine the number of bundles it requires you to order to cover all your roof areas.

You will find two methods to calculate your roof size and comprise the measurement method and the sheet-count method. A package of roofing shingles is called a bundle. Laminate or architectural shingles , one of the most common types of roofing shingles , are generally packaged in three bundles per square.

More complicated roofs will have a higher waste factor because there are usually more cut shingles around corners, walls, and edges. It is okay to have a few shingles left over. They can be saved in case there is roof damage later or if repairs need to be done in the future. So for the 24 square roof example, you would want to add 2. If you are also installing underlayment, then you would need the same amount of underlayment to cover the roof deck.

So in the sq. The roll size depends on the type of underlayment product. Synthetic underlayment comes in 10 square rolls, while regular 15 felt comes in 4 square rolls. So for the 24 square roof example, you would need 2. Finally, if you have any questions about your estimate, ask a roofing contractor in your area. Most will be happy to give you a free estimate. Calculate the roof length by measuring the exterior walls plus the overhang for the length of the house parallel to the ridge.

Next, throw a rope over the ridge and mark it where it meets each eave. This will give the width dimension to use in figuring your area. This should be done on each roof section containing a horizontal ridge.

Determine the roof area by using a mathematical formula that accounts for the roof length, total span, and roof pitch :. Generally, you should use four nails per shingle in the field of the roof, and 5 nails per starter shingle.

Because the shingles calculator does not work in this case, you own a complex roof. Once you found out how many bundles of shingles in a square, you may wonder, is it the same as all kinds of shingles? Well, you may find many different answers regarding this topic. Some manufacturers sell 4 bundles for a square while the other sell three bundles only. The number of shingles per bundle is also different — some come with 22, the other comes with Also, it is important to know how many bundles of shingles in a square.

That way, you can avoid running out of shingles. Skip to content. The quantity needed to cover sq. They are packaged in plastic or paper wrapped bundles designed to be light enough for a person to carry, so heavier shingles require more bundles per square. Typically, there are three bundles to a square; this applies to most three-tab strip shingles and some lightweight laminated shingles.

Heavier three-tabbed shingles and laminated shingles may require 4 or 5 bundles to cover a square. There are 29 standard-sized shingles 12 in. You can measure a new or freshly stripped roof in two ways: the measurement method and the sheet-count method. When you have a bundle or square count for the main roof area, you will then add additional shingles to account for waste, starter shingles, and extra shingles for hip and ridge caps.

If all the roof planes are rectangles, you simply need to multiply the length times the width of each plane to get the square footage; then you will add up the square footage of each plane.

Many times, the roof may be too steep to walk on without safety equipment, so you will have to do the estimate from the ground. If this is the case, measure the length of the building at the ground level and estimate any rake-edge overhangs. Next, from a ladder, use a stiff, wide blade measuring tape to measure from the edge of the eaves to the ridge.