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How To Calculate Roof Area For Shingles

How To Calculate Your Roof Area

How to Find the Pitch of an Existing Roof

Knowing how to calculate your roof area can be a beneficial first step in estimating the cost of a new metal roof. In roofing we call the calculation of roofing materials needed a take-off.

A good roofing contractor will take the time make sure that the take-off is accurate. Proper measurements and attention to roof details ensure that material shortages are avoided and prevent overages .

How Many Shingles Do I Need For 2000 Square Feet

The number of packs or squares required will depend on your roof area or slope. For example, a 2000 square foot roof would require 20 squares or 60 packs. The roofing professional will likely purchase more materials than necessary to get additional materials if needed. Account for about 5-10% overage on your project to ensure you have enough material if measurements are a little off or material is wasted or damaged.

Calculate The Square Footage Of Your Roof

After considering the slope and complexity of your roof, youre ready to learn how to calculate the square footage of your roof.

To get a rough estimate for your roofs square footage, youll use this equation:

For example, if you have an easy up and over, walkable gable roof and a house that measures 56 feet lengthwise and 28 feet widthwise, your calculation will look like this:

56′ x 28′ = 1,568

1,568 x 1.3 = 2,038

Using this equation wont be 100% accurate, but knowing your roofs square footage is a great jumping-off point to learn how much youll have to invest in your replacement. After getting your roofs rough square footage, put that number in our free Roofing Calculator to get an idea on the cost of your new roof.

Also Check: How Often Should You Get Your Roof Replaced

The Fastest Safest And Most Accurate Ways To Measure Your Roof For Shingles

Congratulations on beginning your new roof project! If youre wondering how to measure a roof, what roofing materials to order, or whether your roofing contractor is properly estimating your requirements, our roof measurement guide is here to help. On this page, we provide you with three different ways to measure roof area for shingles or a new metal roof.

The first way is the simplest, especially if youre good with a computer. Well show you how to get a rough estimate of the roofing squares youll need just with Google Earth. The second approach allows you to measure your roof from the ground. This can be especially helpful if you have a dangerous roof and would prefer to keep yourself safe. The third way to measure your roof is from on top of the structure itself. The advantage of this option is that its the most accurate, but it involves a little more geometry and math than the other options.

Let’s get measuring.

Other Roofing / Building Calculators

Roof Area Calculations
  • Roof Shingles Calculator – estimates roof area, materials and installation costs of Asphalt Shingles, for Gable and Hip roofs.
  • Flat Roof Calculator – estimates replacement costs of low-slope roofs, single ply membranes and built-up roofs , as well as insulation, parapets, penetrations and drains.
  • Roof Rafters Calculator – provides material list & prices of lumber for roof rafters / trusses.
  • Roof Pitch Calculator – gives you accurate roof slope, based on roof run and rise. Also converts roof pitch to degrees.
  • Seamless Gutters Calculator – helps you quickly price out aluminum seamless gutters – includes materials and installation. Note, that rain gutters are an essential part of house waterproofing. They prevent water from getting behind the siding, damaging house walls, insulation and foundation, as well as protect your landscaping.
  • Metric Roof Calculator – should be used if you live in Europe, UK, AU, NZ or other country that does not use the Imperial measurements system.

Final Word of Advice for homeowners who want to get the lowest possible price: It’s too expensive to buy cheap roofs, as it will cost you double to redo it after it starts leaking within a year. This is from my vast experience.

Average Roof Replacement Cost in US:

Low End

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How To Measure Your Roof With Google Earth

Using your computer to get a ballpark estimate of your roof area is easy and fast. However, using satellite imagery may not be an ideal solution if your structure is in a very remote location that hasnt been 3D scanned. Thats because well need to grab an accurate representation of your roofs pitch for measuring purposes. From above with a 2D image, everything looks flat. If you were to just measure your roof area from directly above, you wouldnt be accounting for its pitch, or slope.

Consider two homes with the same base area square footage, but one of them has a much steeper roof pitch than the other. That structure would need to be taller, and there would be a lot more roofing material to account for. If youre just measuring from above in 2D, both of these structures might look identical. If you dont account for roof pitch, youre going to underestimate your materials requirements, which could be a costly mistake.

Satellite technology has progressed a lot in the past few years. With , you can easily find your address and a 3D replica of your structure, including your roofs pitch. Lets get to it.

Once you load the site, youll be presented with our beautiful planet:

While you can switch to 2D mode by clicking the button in the lower right, youll want to stay in this 3D view so you can get a good view of your roofs pitch.

What About The Waste Factor Should I Order Extra Roofing Materials

You want to order extra material to account for waste. Waste factors vary.

10%-15% is a good rule of thumb, but your results may be different. 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 2.4 squares which equal about 7 or 8 more bundles.

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What Materials Are Used To Repair Roof

Flat metal roof. Metal is one of the most commonly used materials to replace flat roofs. Metal, especially aluminum, is known for its strength. Metal flat roofs can last almost 35 years under ideal conditions. Plus, it has the added benefit of reflecting solar heat, reducing energy costs.

Minecraft house roofHow to make a roof in Minecraft?Determine the width of your ceiling yourself. In this example, I’m using the one that’s 7 blocks wide, because I marked it with plates.Build the first vertical section. Your first vertical piece should be 1 block shorter than the width of the ceiling.Build the rest of the vertical pieces.We decorate the ark.What to put in a Minecraft house?Steps to build a house. The standard is approxima

Is A Permit Required To Re

How to Install Roof Shingles | Ask This Old House

Depending on the size of the area to be repaired and the type of repair, a roof repair permit may be required. Depending on local building codes, they may also be required for a new roof. Homeowners and buyers should not jump to conclusions about permit requirements as this can have consequences.

How to build a slanted shed roofWhat material is a shed roof made of?roofing felt. Roofing felt is sold in rolls, which are usually 36 inches wide and 10 to 12 feet long.Bituminous tiles. The advantage of using shingles is that you must lay a layer of roofing material over the wood before installing the shingles.Clay/concrete tiles.Wooden shingles.Rubber tiles.Metal roof.What is a shed house plan?Barn style

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A Square Of Shingles Is The Number Of Shingles Needed To Cover 100 Sq Feet Of Roof Area

How many sq feet does a bundle of roofing shingles cover. A square is 100sq feet, if your using some of the heavier roofing, most one bundle of shingle covers about 33 square feet of roof hence around 850 bundles of shingles will be needed for 28000 square feet roof! M) stainguard® algae discoloration ltd. A square represents 100 square feet of area covered by shingles.

Each square will need three bundles of shingles to cover it. A square is equal to 100 square feet and will cost anywhere between $100 and $1,800. Four bundles to a square.

A square of shingles is the quantity needed to cover 100 sq. To properly calculate how many bundles of shingles are needed to roof your home, you need to calculate the total square footage of the roof and convert it to squares. How many shingles come in a bundle?

In the previous example, three squares, or 300 square feet, of shingles will be needed to cover the garage roof. Each square equates to 100 square feet. A bundle is around 1/3 of a square and costs an average of $30 to $600.

You want to order extra material to account for waste. Find the total square footage of your roof by multiplying the width by the length and then divide that number by 100 and you will get the number of squares you need to cover. Although roofing projects are estimated and sold by the square, roofing material is often not sold in 1 square increments.

How Big Is A Square Of Shingles 3 Diagrams Included Homenish

2021 Cost To Install Shingles Roof Shingles Cost

What Else Impacts The Cost Of Your New Roof

Now you know how to roughly calculate your roofs square footage. And dont forget to plug that number into our roof calculator to get a rough estimate for your roof replacement.

Remember, the number of squares your roof has is one of the biggest cost factors for your replacement. But to truly understand what goes into the size of your investment, you need to know the other important factors that impact the cost of your new roof.

Because a roof replacement is such a sizable investment, we want every homeowner to understand what exactly factors into the final cost. Thats why we wrote another article breaking down the 9 factors that impact the cost of your new roof.

Since 1990, the team at Bill Ragan Roofing has proudly helped homeowners in Nashville and surrounding areas with all of their roofing needs. Giving you a positive and educational experience during a stressful time is our main goal. Even if you decide were not the right fit, at least youll have the knowledge needed to make the right decisions.

Check out this article on 9 Factors That Impact the Cost of Your New Roof to learn how a roofing contractor comes up with the final number for your replacement estimate.

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What Is A Hip Style Roof

The Dutch hipped roof style is a combination of traditional hipped and hipped roof styles. A pediment is a triangular piece that is placed on a hipped roof. The upper facade is part of the roof or can be a separate element in the center of the roof, creating an attic or additional windows.

What is soffit and fascia

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Below, there is a simple triangle, and the math used to work out how to make a proper measurement. Once you work through the basic triangle, we will review a typical roof, and how to apply some simple math to calculate how much material you will need for a roof used in our hypothetical example.

1 roof square = 100 square feet The length times the height of a triangle is twice its area . So if you divide your answer of a product of length times height by two, you will get the area of a triangle. /2 = Area

New Shingle Roof

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In Figure above: l=30 feet h=12 feet /2 = 180 square feet

Now that the basic concept has been covered, lets take a look at a more complex roofing system. In this overhead view you see both a hip-end section, and gable ends. With a more complex roof such is this one, it is highly recommended that you make a basic sketch. By doing so, it will be easier to mark your measurements, and calculate the necessary materials for the project. For this example we will break this roof up into sections labeled A through E.

In the figure B. above, a sketched portion is a basic triangle. As we did in the first example, measure the length of the eaves, and the vertical line from the eaves half way point to the peak. Multiply these numbers, and then divide the answer by two./2 = 270 square feet

S1 = /2 = 135 square feetS2 = 50 × 15 = 750 square feetS3 = /2 = 135 square feet

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Calculating The Area Of Complex Roofs

If your roof is not the classic Gable shape, or if it has multiple sections such as hips and valleys, wed recommend splitting the roof into each section and working out the areas individually. If youre unsure of how to do this, get in touch with a roofing professional. Learn how to find a good roofer.

Or, alternatively get in touch with us! Our customer service team will be able to help you calculate your roof area, and anything else you might need for your project. Call them on 01295 565 565, email , or use the handy live chat below.

What Are The Names Of Roof Styles

In Chinese architecture, this style of roof is called , also known as a hipped roof. During the Song dynasty it was known as or , while in the Qing dynasty it was known as or wjdng, a ceiling with five planks. could be. This is the most common roof style used for certain structures.

Roofs or roovesWhat’s the difference between a roof and a rooves? Brian Garner rates the inconsistency in his book Garner’s Use of Modern English as 535:1. Therefore, it is an extinct form that is no longer used. Roofs is the most common and well-known plural form of roof in all varieties of the English language, and Rooves is an older secondary form of roof.Which is the correct plural form roofs or rooves?Since roofs are written with the letter F

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Final Thoughts On Measuring Your Roof

If youre looking for a simple ballpark estimate of your roofing materials needs, Google Earth really does a great job of quickly allowing you to measure the square footage youll need to cover. While its technology sure is surreal, it has drawbacks in its ability to precisely measure distances represented in 3D. Therefore, it can be helpful to gauge estimates of your materials costs by measuring from the ground and on top of your structure. As always, if youre feeling confused, dont hesitate to get in touch with a local roofing contractor to help you out. Many will provide estimates for free. Simply ask how many squares of material they estimate youll need, and compare that to the results you got from using any of the methods we outlined above.

What Type Of Roof Coating Is Best

Applying Asphalt Roof Shingles – Bob Vila
  • Asphalt Emulsion Coating – Asphalt emulsions with multiple fillers and inorganic and organic fibers to give the coating extra strength.
  • Solvent-based asphalt paving: have you ever heard of trimmings? This is another name for solvent asphalt.
  • Acrylic ceilings – People know acrylic ceilings as white reflective ceilings.

Houses In Hilly Areas Sloping RoofWhere are the mansard houses and why?Houses are built with flat floors and vertical walls. Pitched roofs are standard on all homes, as water flows better on pitched roofs than on flat roofs. This is especially true in areas where snow accumulates to a point where the weight of the snow can cause the roof to collapse.Where can you find mansard houses?There are steep pitched roofs in places with heavy snowfall, if the snow doesnt slip the weight can break

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Next Divide Your Total Area By 100 To Calculate The Number Of Roofing Squares You’ll Need To Buy

How to measure a roof for shingles. This can make it even safer to do your measuring and it also removes a level of guessing. Then each measurement is recorded on the diagram, applicable to that roof surface. How to manually measure a roof.

Record these values as roof rise over run, with the vertical measurement listed first and the horizontal second. Measure the width and length of each plane of the roof , and then multiply those numbers to get the correct figure for the square footage of that area. Conversely, you could measure the roof from the ground using a very rough approximation.

Record the measurements on your sketch of the roof. In such a case, you need to take measurement of. How to measure a roof for shingles.

In the united states, a run of 12 inches is used, and pitch is measured as the rise of the roof over 12 inches. Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house. On this page, we provide you with three different ways to measure roof area for shingles or a new metal roof.

This was before i started using these two calculations. So if your roof is 20,000 square feet, that means youll need 200 squares to coat it. The next step is to measure the pitch of the roof deck.

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