How to Measure a Roof for Shingles | 4 DIY Advanced Steps to Follow


It doesn’t matter if you are renovating or purchasing shingles for your new home. A successful roofing project will require a substantial investment in time and money. You may wonder how to measure a tile roof before you begin buying materials. Roof materials come at different prices and are priced per square meter. Ask a roofing professional to calculate and estimate the roof’s structure to determine the dimensions. This article will explain how to measure a roof for roofing shingles.

What are roof shingles

Roof shingles protect your roof from wind and water damage. These are separate roof covers that can be placed on top of each other. Shingles are often placed on an asphalt felt paper underlayment, which stops rain and snow from leaking. Roofs shingles come in a range of styles, colours and textures. Prices can also vary. Most homeowners spend between $8,000 to $9,000 on shingle installation. The availability of design options varies by state and location. Because of the construction methods and roof pitch differences, it is essential to consider which type of shingle you are using before construction. To match your home’s roof design and enhance your home’s aesthetic, you can choose any kind of shingle.

How to measure a roof for shingles

There are many ways to measure a roof for shingles. Although measuring square footage on a roof is the best way to measure it, it is sometimes impossible to walk on one. Roofers generally consider roofs with pitches more excellent than 8/12 to be too steep to climb on. To safely work on steep roofs, you will need special tools like roof jacks or scaffolding. Many other options are available that won’t require you to climb up onto the roof.

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Step 1

It’s possible to measure a roof for shingles using rope and an extension ladder. Measure the length of your exterior walls parallel to the roof ridge. Be sure to include roof eaves when measuring. Next, place one end of the rope over each ridge. Pull it tight and mark the points where the string meets each other with a tape or market. Spread the rope out onto the driveway and measure the distance between each mark. This will give you the total width of both roof planes. To get the roof’s total square footage, multiply that number by its length. If the roof’s length is 40 feet and the distance between the marks on the rope is80 feet, the roof will be 1,200 square feet (80×40).

Step 2

This second method requires more math than the rope method. Additionally, you will need Roof pitch measurement tools. This tool is available in most home improvement shops. To calculate the roof pitch, use the roof pitch tool. Many apps let you use your smartphone to calculate roof pitch. Some of these apps are free. Measure the exterior wall and the lengths of the eaves as in method 1 to determine the size of the roof. Measure the roof’s width, ignoring any overhangs.

To calculate the roof’s total area, multiply the length by width. A place of 1,200 square feet would be required for a home measuring 60 feet in length and 40 feet in width (40×60). The roof’s slope will add additional surface area. To determine the roof’s slope factor, you can use the chart below and the reading taken with the roof gauge. To get the roof area, multiply the slope factor by the site. A 40×60 roof would have a pitch of 4/12, which is equivalent to 1,260 square feet (40x60x1.05).

Step 3

Using the sheet count method to install a new roof or replace the shingles and underneathlayment from an older top. It is quick, accurate, and does not require climbing up on the roof. Roof sheathing is constructed from 4-foot-by-8-foot pieces of plywood. Each sheet measures 32 square feet. Simply count the number of sheets on your roof to determine its total area and multiply it by 32. One roof with 50 sheets would cover 1,600 square feet (32×50). Calculate the area of sheets that have been cut to fit around or along edges. A half-sheet is approximately 16 square feet, and a quarter sheet is 8 square feet.

Step 4

It seems that every smartphone app can do everything. So it shouldn’t be a surprise that there are apps to measure the area of a roof. These apps are powerful but expensive. This limits their use to professionals. It might be worth the investment if you have a complex roof. Apps like RoofSnap or IRoofing use drone imagery for roof measurements from a bird’s eye view. This is particularly useful for large structures with complex rooflines, which would be difficult to measure using the above methods. RoofSnap subscriptions start at $99 per month, and roofing memberships begin at $129 per month. A single-month subscription to RoofSnap is $99 per month. This membership allows you to estimate the number of shingles required for a complex roof. You might be able to save money on supplies by measuring accurately. This could pay for the software.

How are roofing shingles measured

Roof Shingles can be purchased by the square or in bundles. You need to know how many roofing shingles you have. The area of your roof’s top surface. 100 sq. shingles. One square of shingles is the length of a roof. A square is, on average, three bundles worth of roofing shingles. There are 29 shingles available with 12-inch measurements. 36 in. Each bundle should contain three bundles per square. Calculating the roof area is the best way to determine how many bundles a client must order. To calculate the roof area, measure the width and length of your home. Other shingles are added to the roof area to compensate for any waste or backup shingles.

Types of roofing shingles

Roof shingles can be made from wood, slate or metal, and plastic and composite materials. These materials include asphalt, plastic, and wood roofing shingles. These materials can be purchased at local hardware and construction stores.

Asphalt shingles

Asphalt shingles are the most popular roofing shingle and the most affordable. It’s lightweight, affordable, and easy to install. Asphalt shingles can be made to look like wood, tile or slate and offer more benefits than other roofing materials. Layered sheets of this type are used on roofs to create a more grand illusion than single shingles like slate. Prices will vary depending on how steep the roof is and what quality asphalt shingles they are. On average, the cost per square would be between $1.50 and $6. A standard-sized roof would cost between $100 and $600 per square.

Wood shingles

Wood shingles are thin, narrow pieces of wood used to protect roofs from the elements. In the past, shingles were made from bolts of wood. But, wood shingles are now cut into thin sections while shakes are separated from a bolt. When compared to shakes, wood shingles can be sawn at the sides.

Wood shingles can last up to 30 years but require annual maintenance. Cedar, also called “shakes,” is the best choice for this type of shingle. It is resistant to insects and rot. On a 1,000-square-foot home, the average cost of a wood roofing shingle is between $4,000 and $10,000. The average cost of a wood roofing shingle for a 1,000 sq. ft. home is around $4,000 to $10,000. The lowest price for a wood shingle is $3.00 per sq. foot, while asphalt shingles are $2.50 per sq. foot.

Plastic shingles

The life expectancy for plastic shingles, whether synthetic or composite, is 40 years. They require little to no maintenance. Plastic polymers, a type of plastic shingle, last for more than 50 years with little to no maintenance. Because it takes less time and requires fewer resources to install, the installation process is more straightforward than with other types of roofing shingles.

Because it can imitate the appearance of more expensive roofing types, this type of roofing is cheaper than other options. It is easier to install because it doesn’t require additional structural support. Average roofing installation costs about $3-$6 per square $ 400 to $700 per square foot. The pitch, slope and size of a standard-sized roof will all affect the price.


The entire process comprises four components: slope measurement, roof measurement and surface calculation. Finally, the final work is to calculate the required shingles (or roof replacement). Please be patient to get the best possible estimate of shingles or other materials. We hope you are now able to measure a roof for shingles.

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