0Comment # Roof Estimating

## How do you estimate a roof?

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.

### How do I calculate roofing materials?

To estimate roofing materials, start by finding the total square footage of the roof and divide the number by 100 to determine the number of “squares” in the roof. Since it takes 3 bundles of shingles to cover a square, plan to purchase 3 bundles for each square. Then, add 10% to the number to account for waste.

### How do I calculate the square footage of my roof?

For an easy up-and-over, walkable gable roof, you’ll multiply the footprint of the roof by 1.3 to get the square footage of your roof. For a hip roof with a low slope, you’ll multiply the footprint of the roof by 1.4 to get the square footage of your roof.

### How many bundles are in a square?

There were four bundles to a square. Around 850 bundles of shingles will be needed for 28000 square feet of roof, if you use some of the heavier roofing. There are two answers. 3 bundles per square is the average for “normal” architectural shingles.

### How do you convert square footage to roofing squares?

Roof surfaces are measured in “squares.” A square is an area of roof which measures 100 square feet. To determine the number of squares on the gable roof above, simply divide its total of 24,000 square feet by 100.

### How many squares are in 1800 square feet?

18 squares. A roofing square is equal to 100 feet on your roof. If your roof measures at 1800 square feet, you would need 18 squares of shingles to cover your roof.

### How many shingles do I need for a 2000 square foot house?

The surface area of your roof will affect the number of bundles or squares you need. A 2,000 square foot roof requires 20 squares or 60 bundles.

### How many shingles do I need for a 8×12 shed?

For a 8×12 shed roof, you will need approximately 6 bundles or 174 pieces of three tab strip standard-sized shingles (12 inch by 36 inch) when overhangs is 1 feet and roof slope is 6/12. Thus to cover roof of 8×12 shed, 6 bundles or 174 pieces of shingles will be needed.

### How many shingles do I need for a 12×12 shed?

The average size of 12×12 shed roof is 3 squares, which typically requires 9 bundles of three-tab asphalt shingles or any other starter strips.

## How much would it cost to build a 12×12 storage shed?

On average, a shed costs between \$20 and \$175 per square foot to build.

Cost Estimator by Size.