How To Estimate Roofing Work?

The roof is one of the most vital parts of any home. The average national cost for installing a new roof is $15,600, with most homeowners spending between $9,600 and $24,000. The final price depends on height and pitch of the roof, home size, roof surface size, roofing material, and geographic location. Generally, the cost breaks down to 40% for materials and 60% for labor. Read on to learn all the factors involved in installing a new roof—or replacing an old one.

How to estimate roofing work

Frequently Asked Questions ( FAQs)

Multiply your house length by your house width to get the area. (For example, 40 feet x 30 feet = 1,200 square feet.) Next, multiply the area by your roof’s pitch. (1,200 x 1.05 = 1,260 square feet.)

For a 12×12 shed roof, you will need approximately 3 squares or 9 bundles or 261 pieces of three tab strip standard-sized shingles (12 inch by 36 inch) when overhangs is 1 feet and roof slope is 6/12.

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For a 2000 square foot house foot print, you will need approximately 26 squares or 78 bundles or 2262 pieces of standard size 3-tab shingles (26×3 = 78 bundles) to cover roof. Thus, to cover roof of a 2000 square foot house, you would need 78 bundles of shingles.

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Traditional asphalt shingles can range from $130 per square and $40 per bundle, while slate may run $870 to $1,800 per square, and $330 to $590 per bundle.

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Metal roofing installation costs $8 to $14 per square foot installed vs. an asphalt shingle roof which costs $4 to $9 per square foot installed. Most homeowners spend between $8,358 and $15,362 in total. The long-term investment return of metal roofing over the quick-to-be-replaced asphalt roof is highly preferred. Prices depend on roof size and slope, cost to remove old roof, type of metal used, painting, and installation labor.

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Cost of Metal Roofs vs. Shingles

Metal roofing costs between $6.40 to $16 per square foot installed vs. an asphalt shingle roof which costs between $4.50 and $9 per square foot installed. Compared to an asphalt roof on a 1,200 square foot single-story home costing $4,500 to 8,800, metal roofs cost $8,700 to $19,500+.

Many homeowners would instead install metal roofs that look like shingles for a more residential look. Other than metal roof cost lying at 2 to 3 times to cost of asphalt shingles, metal roofs are an infinitely better investment because of their long life and low maintenance. Most metal shingles are made of galvanized steel or aluminum, but some companies offer copper and zinc shingles too.

Cost of Metal Roofs vs. Shingles

Metal roofing costs between $6.40 to $16 per square foot installed vs. an asphalt shingle roof which costs between $4.50 and $9 per square foot installed. Compared to an asphalt roof on a 1,200 square foot single-story home costing $4,500 to 8,800, metal roofs cost $8,700 to $19,500+.

How to estimate roofing work

Many homeowners would instead install metal roofs that look like shingles for a more residential look. Other than metal roof cost lying at 2 to 3 times to cost of asphalt shingles, metal roofs are an infinitely better investment because of their long life and low maintenance. Most metal shingles are made of galvanized steel or aluminum, but some companies offer copper and zinc shingles too.

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Aluminum Roof Cost per Square Foot

Like other roofing, aluminum is often priced and sold by the square – or 100 sq. ft. It can also be priced by square foot to make it easier for homeowners to determine their average costs. Aluminum roofing costs between $6 and $16 an sq.ft. for aluminum roof material and $7.50 to $22 an sq. ft. installed. Interlocking shingles are the least expensive materials, while insulated panels are the most expensive. The aluminum thickness and the roof shape and type influence your final costs. Below are the average costs to install an aluminum roof of verious sizes.

Cost To Install Aluminium Roof
SizeAverage Cost (Installed)
1,000 sq.ft.$6,900 – $31,000
1,200 sq.ft.$8,300 – $27,200
1,350 sq.ft.$9,775 – $30,350
1,500 sq.ft.$10,750 – $33,500
2,000 sq.ft.$15,000 – $45,000
2,200 sq.ft.$15,300 – $48,200
3,750 sq.ft.$25,374 – $80,750
4,500 sq.ft.$30,250 – $98,500

Roof Framing Cost by Material

The average cost of roof framing material varies. Most people spend $5 to $7 per board foot on wood and $9 to $11 per board foot on steel framing. The majority of roofing types are framed using wood trusses, with a few using woods with steel bracing. However, it is also possible to build larger roofs using steel framing materials. Steel framing provides more stability for longer runs and taller roofs. In a more basic roofing job, wood framing can get the job done for about half the cost of the project. In the table and subsections below, we’ll go over both types of materials, their average costs, what each is best for, and other factors.

Cost To Frame Roof

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How To Estimate Roofing Shingles

1. Find the square footage of the roof

Measure the length and width of each portion of the roof, multiply length by width for each plane, and then add the planes together for the total square footage.

  • If you have a simple gable roof, you’ll only need to measure and sum up the 2 planes of the roof. If your roof has dormers, hips, or other complex elements, don’t forget to take the area of those additional parts of the roof into account.

  • Because of these slopes and pitches, the square footage of your roof will not be the same as the square footage of your home.

2. Determine the total number of squares

Divide the total footage by 100 to determine the number of “squares” in the roof.

3. Determine the bundles of shingles needed to cover the roof

It takes 3 bundles to cover a square if you use 3-tab shingles, the most common type.

4. Account for waste

Add 10% to the shingle estimate to account for waste.

  • If your roof has hips and valleys, make it 15% because of waste in cutting shingles to fit the valleys.

Roofing Cost Estimator

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Metal Roof Cost per Square Foot

The average cost of installing a metal roof cost ranges from $4.5 to $43 per sq.ft. installed. While most roofs are sold and installed by the square – 100 square feet – your installer may give you a square-foot cost. Many materials can create a metal roof. Several styles are available, depending on the metal, which may impact costs. The total cost depends on the roof size and metal. Larger roofs and more complex roofs cost more than smaller and simpler roofs. Your roof size and home’s square footage are not necessarily linked. Larger homes often have larger roofs, but pitch and shape can dramatically change the roof size. Below are the average costs for installing a metal roof based on the roof’s square footage.

Roofing Cost Estimator
Roof SizesCost (Installed)
1,000 sq.ft.$4,500 – $43,000
1,200 sq.ft.$5,200 – $53,000
1,350 sq.ft.$5,800 – $57,000
1,500 sq.ft.$6,500 – $63,000
2,000 sq.ft.$8,500 – $83,000
2,200 sq.ft.$9,200 – $90,000
3,750 sq.ft.$17,000 – $170,000
4,500 sq.ft.$19,000 – $200,000

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Process To Get Roofing Estimate Report

Here I am going to share some steps to get your roofing estimate report.

  • You need to send your plan to us.

    You can send us your plan on info@estimatorflorida.com

  • You receive a quote for your project.

    Before starting your project, we send you a quote for your service. That quote will have detailed information about your project. Here you will get information about the size, difficulty, complexity and bid date when determining pricing.

  • Get Estimate Report

    We do roofing estimating and prepare a detailed report for your project. At last you finalize the report and finish the project.

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