Simply enter your roof dimensions and roof type such as gable or hip and approximate roof pitch.
How do you figure shingles for a roof.
Mark a length of 1 foot 0 30 m on a long level starting from one end.
You will then have to get the measurement of the rake of the roof.
Roof area measured in sq ft number of squares.
Divide the total footage by 100 to determine the number of squares in the roof.
How many rolls of felt will you need.
This roof shingle calculator requires four basic inputs.
If the existing shingles are standard 3 tab shingles you can get this measurement by taking note of the number of tabs along the eaves and ridges then determine the length in feet.
Roofing felt is sold by the roll.
It takes 3 bundles to cover a square if you use 3 tab shingles the most common type.
Our calculator will help you estimate the amount of roofing shingles needed for your project plus the cost of materials and accessories.
Use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house.
Roof type either gable or hip using these four inputs you will get several basic outputs.
When figuring the amount of shingles needed to roof a house you first convert the total square footage of the roof to squares a square represents 100 square feet of area covered by shingles.
Hold the end you measured from against the bottom of a rafter so it s sticking straight out horizontally and is level.
Outside of the u s a degree angle is typically used.
A typical bundle of shingles weighs about 75 pounds while some premium products can weigh over 100 pounds per bundle so consider delivery of materials.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
Roof length measured in feet roof width measured in feet roof pitch.
Singles are often sold in bundles with three bundles equaling one roof square.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
3 determine the bundles of shingles needed to cover the roof.
How to use roof calculator.
To do this you need to note that one tab will be equal to 1 foot.
Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30.
Measure the pitch of your roof in the attic.
With that as background you are now ready to estimate how many shingles you will purchase for your roof project.
Approximate price in dollars the estimate of a final price will depend to a large degree.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.
The average roll of 15 pound roofing felt covers about 400 ft 2 or 4 squares while the average roll of 30 pound roofing felt covers about 200 ft 2 or 2 squares.
Enter your zip code.
Measure your roof accurately.
Enter appropriate roof pitch slope.
