Why Is It Important
A roofing square is an important measurement for roofers. It is the most common way to measure a roofs size. Roofers use this measurement to calculate the amount of material they will need to cover a roof. This measurement is also used to price a new roof. A roofing square is equal to 100 square feet.
Roofers will measure the length and width of a roof and divide it by 100. This will give them the roofs square footage. Most roofs are not perfect squares, therefore this measurement may be difficult to calculate without a roofing square ruler or tool such as a credit card that is 100square inches long.
Count The Sheathing Pieces
The easiest method to figure your square footage is to estimate using the exposed roof sheathing. If youre shingling over your old shingles, then this method wont work. But if you are completely removing your old roofing or completing a new build, then this method works for you.
A complete piece of roof sheathing is 4 x 8. Thus, the square footage of one piece is 32 feet squared. Count up all the sheets on all sides of your roof. Add them up. Then account for half or quarter pieces on the edges and roughly add them up to make complete pieces.
Once complete, you can multiply the number of sheathing pieces you have by 32, which will give you a fairly accurate picture of the square footage of your roof.
How Many Shingles Do I Need For A 2424 Garage
For this example, well use the same type of roof a simple gabled roof. For our purposes, well say that the roof extends 1.5 around each side.
Well first calculate one face of the roof. The length of the roof is 24+1.5+1.5, which equals 27. The roof pitch is 4:12, which means the width of the roof is about 12.5. Add 1.5 of overhang to this number and you get 14 of roof width on one roof face.
Multiply 27 by 14 and you get 378 square feet for one roof face. The total roof area is 756 square feet. Divide this number by 100 to determine the amount of roof squares youll need, which equals 7.56 roofing squares.
Multiply 7.56 roofing squares by 3 bundles per square. Thus, 23 bundles of shingles are required to cover a 24×24 garage with 1.5 overhangs on all sides.
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How To Estimate The Cost Of Your New Metal Roof
Of course, the cost of a metal roof also depends on the size and shape of your roof, your local market rates, the type of home you have, and any other special conditions such as unique climate or weather factors like wind damage on your roof.
The thickness of the metal roof, the roof type and quality of the paint finish that you choose, and the unique shape, details, and other factors that make your roofing project unique all play a role in the cost of your roof as well.
All of that said, you can begin to estimate based on the aforementioned costs and start to assume that your new metal roof will cost around $12.00 $13.00 per square foot, and a typical singlefamily home requires between 1,500 2,000 square feet of metal roofing , so you can assume that your new roof will cost between $18,000 $26,000.
There are less expensive or cheaper metal roofing options like corrugated steel or ribbed steel as well.
Read on to learn more about the various types of metal roofing, which range from highend standing seam metal panels to metal shingles and everything in between.
The most important thing is to find something that fits your budget, style and will provide the best protection as the literal roof over you and your familys heads.
Total Cost Of A Roof Replacement
So far, if youve done the math, an average roof replacement will cost about $6,190. This is not taking into account the price of the workers traveling to your home, dumpster fees, taxes, and additional materials. After adding in all those additional costs, the average price for a roof replacement can be anywhere between $8,000 to $14,000 on the average sized home. Youll find that a company without a lot of overhead will charge you within the $8,00010,000 range, while a company with a lot of overhead will charge anywhere from $10,00014,000. For help with choosing a roofer, check this out!
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How Do You Calculate Roofing
Roof Dimensions Measure the length and width of each level of your roof. Divide this number by 100 to determine how many squares you have on your roof. Add 10 percent for each deductible you need when installing shingles. Divide the number by 3 and you will know how many lots you need to buy for your roofing project.
Factors That Determine The Cost Of A Roofing Square
Roof pricing is determined by a variety of factors, including but not limited to:
 Your homes geographic location
 Your roofs size
 Roofing material
 Material quality
 Current market for roofing materials
 Length of warranty after the replacement
 The contractors experience level and certifications
 How quickly you need the roof replaced
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Square Feet To Roofing Squares
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Can You Do A Closed Valley With 3 Tab Shingles
As the valley collects water from the two roof channels, its ruins must drain twice as much as the wires on the roof plane above the valley must leak. The roof does not fasten the 3tab shingles in the middle of the glow of the valley.
How do you weave 3 tab shingles in a valley?
Why are 3 tab shingles bad?
The threetab shingles are weak, do not last long, and do not last long. They can be damaged in areas or areas of the country with severe weather.
Are closed valleys preferred when installing landmark shingles?
Closed valleys are popular with CertainTeed when using Landmark Series shingles however, open and woven valleys are also acceptable.
Read Also: Where Do The Screws Go On A Metal Roof
Sellers Roofing Company Minneapolis & Saint Paul
Sellers Roofing Company Minneapolis & Saint Paul provides residential & commercial roofing services to clients in the Brooklyn Park and Brooklyn center, Minnesota area. Specializing in full roof replacement, tearoffs, repairs, and storm damage assessment, we strive to offer the best overall customer experience in the residential roofing industry. We believe that every homeowner deserves honesty.
Contact Us
 AddressBrooklyn Park and Brooklyn center area MN 55443
How Many Shingles Are In A Bundle
Roof shingles are packaged and sold in bundles. Both architectural or laminate shingles come in bundles, which are also a standard pack size in order to make buying roofing supplies a more foolproof process. A bundle includes enough shingles to cover a third of a square, therefore meaning you will need three bundles per roofing square.
The number of shingles in each bundle will vary depending on the size of an individual shingle. Smaller shingles may have up to 30 shingles in a bundle, while larger shingles may have as few as 15 shingles per bundle. As most bundles are supplied with 3 bundles per square, to find out how many bundles you need, you would just multiply the roofing square measurement by 3.
So if you need enough shingles to cover 20 squares, you would multiply 20 by 3, giving you a result of 60. This means you would need to order 60 bundles of shingles to have enough to complete your roof.
Watch out for some manufacturers which have 4 bundles per square, in which case you would need to multiply your square measurement by 4 to determine how many bundles you need. To be sure that you dont run out while working on your project, it is always worth ordering extra bundles for the sake of contingency.
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Join Our Facebook Roofing Group
Hey everybody,
We are going social and have created a new Facebook group for people who want to know more about roofs, roofing problems, fixes, ask pros, etc. Feel free to join. It is a private group so once we get your request to join we will approve it as quickly as possible.
How Big Is My Roof
Alright, lets start with the basics. First, you have to determine the size of your roof. Roofs are measured in squares. A square in roofing terms is equal to 100 square feet. The average home is approximately 30 squares, meaning that their roof is 3,000 square feet. Here is a simple way to figure out the measurement of your roof.
First, you need to find the square footage of the base of your home. Use a tape measurer to find the length and width of your home. If its irregularly shaped, divide the home into geometrical shapes, find the area of each, then add them together. Once you know the square footage of the base of your home, find the pitch. Youll see directions to finding the pitch of your home in the section below.
Now, youll need the pitch and square footage to find the size of your roof. Look on the chart below for the correct multiplier that matches your slope. Youll see that a pitch of 6/12 has a multiplier of 1.12. To find your roof size, multiply the square footage by the proper multiplier. The total is the total square footage of your roof!
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How Many Square Feet In A Roofing Square
Well, heres a question that has bugged many a homeowner. It may sound as simple as taking a look at your roof and estimating what would equal a square and ask your contractor to come up with some magic. Well, it doesnt really work that way.
Its not only doctors or musicians that have jargon specific to their industry and workplaces, but also something common in every organization and industry. This also makes it true for roofing contractors. Whereas the words may mean one thing to you the outsider, they have a totally different meaning to people in a specific industry.
How To Calculate Shingles
To calculate the number of shingles youll need, youll need first to measure the square footage of your roof, which is covered above.
Once you have the square footage, divide that number by 100. This will tell you how many roofing squares you have. If your roof is 4500 square feet, divide this number by 100 and youll get 45.
Since we know that most shingles require three bundles to make a square, youll multiply 45 times 3 to find out how many bundles you will need. In this case, youll need 135 bundles of shingles.
If you want to take it a step further and calculate the amount of individual shingles youll need for your project, multiply 135 by the number of shingles indicated on the bundle.
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How Many Square Feet Are In A Square Of 3 Tab Shingles
Each plywood sheet is 4 x 8 feet or 32 square feet, which coincidentally is almost exactly equivalent to the coverage of one bundle of traditional threetab shingles. If its a reroof project and you have access to the original paperwork from the last shingle installation, that may be useful in showing the roof area. via
How To Measure A Roof For Shingles
There are several different methods to calculate the square footage of your roof. If you remember back to grade school, youll recall that youll multiply the length times the width to find the area of a rectangle.
If you are lucky enough to have a simple roof, say a gabled roof with two identical sides or even a single sloping roof, then calculating your roof area will be a breeze. On the other hand, if you have a roof with hips and multiple gables, then youll need to spend a bit more time calculating your roof square footage.
Here are several ways to measure roof area for shingles.
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Calculating The Area Of A Complex Roof
Areas of complex roofs with multiple hips and valleys take the most time to calculate. Start by making a rough sketch of the roof. To simplify the calculation, break down the sketch into rectangles and right triangles , then take as many measurements of the roof as you can to match the sides of the rectangles and triangles on the sketch.
Use visual cues from the existing roof shingles or roof sheathing to determine square lines off eaves edges or ridges. These cues will help you measure the lengths of the sides of the rectangles and triangles. For instance, the cutout slots on shingled roofs run perpendicular to the eaves, and nail rows in sheathing are pretty close to square also. It is difficult sometimes to get accurate measurements. Dont get too concerned though just round lengths to the nearest 6 in.
With the sketch filled in with measurements, you can determine the size of the roof area. The area of a rectangle is length multiplied by width, whereas the area of a right triangle is the length of the two sides that meet at the 90degree corner multiplied together and divided by two .
Tally the square footages of all the rectangles and triangles, which will give you the total square footage for the roof. The example here shows the calculation for a roof with two hips.
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Whats Your Roof Slope
You will also need to know the slope of your deck.
To determine this, measure the vertical rise of your deck in inches over a 12 horizontal distance.
If this rise is 4, then your roof slope is 4 in 12.
Roof slopes are always expressed with the vertical rise mentioned first and the horizontal run mentioned second.
Builder Mike Guertin Explains 3 Ways To Calculate The Quantity Of Shingles You’ll Need For Your Next Roofing Job
One of the biggest challenges for experienced builder and novices alike is accurately estimating materials for a construction projectespecially for roofs, because they can be difficult to access for taking measurements.
But dont fretIn this excerpt from my book Roofing with Asphalt Shingles, I describe three reliable methods for determining the area of a roof, plus Ive included tips for estimating the number of extra shingles youll need for waste, overlaps, and starter shingles.
Note: be sure to take your time and doublecheck your numbers when calculating the quantity of shingles, underlayment, flashings, and other materials needed for yourroofing project. The more accurate your estimates, the less time youll waste waiting for material deliveries during the project.
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Determine The Number Of Roofing Squares On The Roof
After calculating your roofs total square footage, you have to convert the figure into roofing squares. Its the easiest part of the calculation process. You need to divide the overall square footage by 100 to get the number of roofing squares.
For instance, if the total square footage of a roof is 1,800 square feet, consider dividing it by 100 to get 18, the number of roofing squares on the rooftop.
How To Calculate Number Of Roofing Shingles
Fortunately, you don’t have to make a haphazard shingle estimate when planning for your roofing project: your roof size and chosen shingle type will guide the purchase process.
Shingles are sold in prepackaged bundles, not individually. Roofing manufacturers take the guesswork out of how many bundles you need per squareit’s listed in the specifications of each shingle they make. The specs for any given shingle will tell you how many bundles make up a square, how many shingles are in a square, and even the approximate number of nails you’ll need per square.
Often, three bundles of prepackaged asphalt shingles make one square, as is the case with the Timberline® HDZ Shingles. That said, the number of bundles you need can vary depending on shingle design. For example, five bundles of architectural asphalt shingles with artisancrafted shapes, such as the Grand Sequoia® Shingle, cover one square. Once you know the number of squares of material your roof needs, check the shingle manufacturer specifications so you get your hands on exactly what you need.
If you’re still deciding on the perfect shingle for your roof, play around with the GAF VirtualRemodeler. The free online tool helps you envision how different shingle colors and styles would work with your home’s style. Be sure to keep local building codes in mind as you weigh your shingle options..
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