How do you measure a roof for Blueprint shingles?

Here’s a step-by-step guide to measuring with blueprints:

  1. Open the app and select “Measure Your Roof.”
  2. Select “Sketch My Roof.”
  3. Retrieve your blueprint image by tapping “Load,” then selecting the source of the file, i.e., your email, Dropbox, etc.
  4. Select the blueprint you wish to measure.

How many shingles do I need for 1000 square feet?

Since there are twenty six shingles in a bundle of twenty year shingles (which is fine for starters and edges), divide the result by twenty six. For the number of ridge caps, multiply the length of the hip or ridge by twelve and divide it by five. This house is 1000 square feet. It requires 18 squares of shingles.
Price of Roofing Shingles Per Square Foot.
Roof AreaCost of Shingles
Roof AreaCost of Shingles
750 square feet$700 – $800
1,000 square feet$910 – $1,100
1,500 square feet$1,400 – $1,600

How many bundles of shingles do I need for 1700 square feet?

The shingles cover 33.3 sq. 57 bundles is a ft. 1,700 / 33.3 + 10% for trim.

Are 50 year shingles worth the money?

It’s one of the most common questions people ask when it’s time to replace their roof: Are 50-year shingles worth the money? … In most cases, 50-year shingles won’t improve on resale value of a home over 25- or 30-year shingles.

Is GAF or Owens Corning shingles better?

OC vs.

One area GAF Timberline Shingles really surpass Owens Corning is in their outstanding warranty offers. They are both pretty even when it comes to the standard roofing warranty, with 25 year limited and lifetime warranties on just about every type of shingle.

How many bundles of shingles do I need for 2000 square feet?

60 bundles
The number of bundles or squares you need will depend on the surface area of your roof, and its pitch or slope. For example, a 2,000 square foot roof will require 20 squares or 60 bundles. A professional will likely purchase slightly more materials than necessary to ensure there is extra material if needed.

How much does it cost to replace a roof on a 2200 square foot house?

A new asphalt shingles roof for a typical 2,000 to 2,200 square foot single-family house can range in price from $9,500 to $16,500 fully installed, including tear off and disposal of the old roof (up to two layers).

Roof Square Footage By Address

Can I measure a roof from Google Maps?

The good news is there is a way to measure your roof in a safe and accurate way, all from the comfort of your home: use Google Earth. With just a few clicks, you can search for any address, get a bird’s eye view of your roof, and get the roofing measurements that you need.
To find your roof’s total square footage:
  1. Measure the length and width of each plane on the roof (including dormers) then multiply length times width.
  2. Add the square footage of each of the planes together.

How do you estimate roofing?

To do this, measure the length and width of each plane on the roof, including dormers. Then, multiply length x width to get the square footage of each plane. Finally, calculate your roof’s total square footage by simply adding the square footage of each of the planes together.

Roof Size and Pitch

A new roof on a 1,000-square-foot house costs an average of $4,000 to $5,500 while the cost to replace a 3,000-square-foot home’s roof can rise to an average of $11,200 to $16,000.

What is the average price to tear off and replace a roof?

Around $12,000 to $15,000
Most homeowners can expect the average cost to tear off and replace a roof to be around $12,000 to $15,000. This price is based on a home with 3 bedrooms, 2 bathrooms, a walkable roof pitch, a little roof complexity, and dimensional asphalt shingles.

Average Cost to Replace a Roof 

House (& Roof**) by Square FootRe-Roofing Cost*
1,100 (1,160)$4,200 – $6,000
1,200 (1,265)$4,500 – $6,500
1,500 (1,581)$5,500 – $8,000
1,600 (1,687)$6,000 – $8,500


If you want to get the exact area measurement for your roof, you can follow these steps:

  1. Once you have your roof’s pitch, divide the number by 12. (For example, if your roof’s pitch is 4 in 12, you would divide 4 by 12. This would yield 1/3.)
  2. Next, square your result. (If your number is 1/3, squared would yield 1/9.)
  3. After that, add 1 to your number. (1/9 + 1 = 10/9.)
  4. Next, figure out the square root of your new number. (The square root of 10/9 is 1.05.)
  5. Next, use your measuring tape to measure the length of your house. (Be sure to include overhangs.)
  6. After that, measure the width of your house. (Be sure to include overhangs.)
  7. Multiply your house length by your house width to get the area. (For example, 40 feet x 30 feet = 1,200 square feet.)
  8. Next, multiply the area by your roof’s pitch. (1,200 x 1.05 = 1,260 square feet.)
  9. To allow for hips, ridges, and waste, add 10% of your final number for a gable roof and 17% of your final number for a cottage roof. (Your total number would be either 1,386 or 1,474 square feet.)
aerial roof measurement

How To Calculate The Cost Of A Roof Replacement

Getting Rid of the Previous Roof

Expect to pay at least $1,000-$2,000 for the contractor to remove and haul away the previous roof from your home. Obviously, this cost will increase with the size of your roof and the difficulty of workers to remove the old shingles—the longer it takes, the more man-hours will be required.


First, some basic roofing terminology: A 10-by-10-foot section of roof is commonly referred to as a square. That equals a 100 square feet, so a 2,500-square foot roof is 25 squares. Here are some basic estimations on the cost of one square of shingles (actual costs will vary, of course, depending on shingle quality, materials used, and brand):

  • Asphalt shingles: $80-$120
  • Cedar shake shingles: $600-$900
  • Slate tile: $300-$500
  • Metal roofs: $200-$1500

Other Roofing Materials

From the nails used to the underlayments that shingles will reside upon to the flashing that secures joints, seams, and edges, the materials to hold your roof together will be part of your investment. The quality of these materials can vary—generally, the more you spend, the better the roof—but plan on about $50-$100 per square.

How are Roofing Estimates Determined?

When experienced roofing contractors arrive to provide a free estimate, they consider several factors. This is how they go about giving you an accurate cost analysis.

  • Roof Measurement

Roof measurements are taken digitally. Roofing contractors use technology like satellite imagery or drones. Their calculations include such factors as the slope, roofline peaks, and the overall complexity of your roof.

  • Roof Inspection

In a thorough roof inspection, roofing contractors assess the condition of your roof. This helps them determine the scope of the project.

  • Roofing Materials

Experienced roofing contractors will explain the advantages of various materials and make recommendations concerning the best roofing system materials for your home or business. They will factor in such things as shingles, ventilation, roof accessories, and warranty.

  • Calculating Costs

Once the roofing contractor has obtained this information, the company is prepared to provide an accurate estimate to the question: How Much Does the Average Roof Replacement Cost?

The roof replacement specialists will factor in: labor, materials, warranty, and permits, the cost of removing old materials, and cleaning up.

For a basic project in zip code 47474 with 125 square feet, the cost to Install a Asphalt Shingle Roof starts at $3.75 – $4.92 per square foot*. Actual costs will depend on job size, conditions, and options.

To estimate costs for your project:

1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased.

2. Specify Project Size and Options Enter the number of “square feet” required for the project.

3. Re-calculate Click the “Update” button.


aerial roof measurement

Roofing Calculator – How to Measure a Roof

How to Calculate Total Square Footage of Your Roof. To find your roof’s total square footage: Measure the length and width of each plane on the roof (including dormers) then multiply length times width. Add the square footage of each of the planes together.

What is a roofing square?

A lot of different factors determine the cost of your new roof. One of the biggest factors is the size of your roof that’s calculated by a measurement called a “roofing square”.

A roofing square is a 10×10 area that’s equal to 100 square feet of roof surface. The amount of roof squares determines how much roofing materials and labor it takes to replace your roof. 

The more squares your roof has, the more your roof replacement costs. Usually, it takes about 3 bundles of roofing materials (asphalt shingles) to fill a roofing square. 

But it ultimately depends on what type of roofing material you choose for your roof replacement. Some homeowners get confused by the term “roof square” and like to see the cost broken down by square footage. 

If this sounds like you, all you have to do is take the cost per square and divide it by 100. For example, if the cost of your roof is $600 per square, that comes out to $6.00 per square foot. 

If there’s any confusion about the terms you see on your roof estimate, don’t hesitate to ask the roofing contractor to explain them until you fully understand. 

Estimating Roof Area Using Pitch and Square Footage

If you are mathematically inclined or have a roofing calculator, you can estimate the roof area if you know the pitch of your roof and the square footage of your home. To illustrate, if your pitch is 4/12 and your two-story home has 1,400 square feet on each floor, these are the calculations.

• Divide the pitch. For a 4/12 pitch, the answer is 1/3.
• Square the above answer, which in this example would yield 1/9.
• Add 1, expressed as a fraction. That is, you would add 9/9 + 1/9 for a total of 10/9.
• Take the square root of 10/9, which is approximately 1.054.
• Multiply 1.054 by 1,400, the square footage of the home used in this example. You should get 1,475.6.
• Divide 1,475.6 by 100 to determine the number of squares required. You will need at least 14.756 squares of roofing. However, you should add about 10 percent for starter strips, valleys, waste and hip and ridge.

Estimating Materials Based on Actual Measurements

Measuring each roof plane requires you to actually go onto your roof. If your roof has a number of planes and numerous hips, ridges and valleys, this is the most accurate way to calculate the materials needed. Take a metal tape measure and a pen and paper. Measure each plane’s length and width. Record your measurements. Once you are safely on the ground, use your measurements to determine the square footage.

• For rectangular areas, multiply the length by the width. For example, if a plane measures 30 feet by 100 feet, this would be 3,000 square feet.
• For triangular areas, you may need to dust off your geometry book. If the area forms a right triangle, you can make use of the Pythagorean theorem. Otherwise, you might want to look up how to calculate the semiperimeter and then use Heron’s formula to find the area.
• Be sure to add extra for valleys, hips and ridges.