Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house.
Estimate roof shingles needed.
How to calculate roof shingles needed.
Once you know this number you can estimate the final price of the materials.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
There is nothing worse than being short on shingles because you will only realize this close to the end of your project.
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Keep in mind that a drip edge will be needed to protect the edge of the roof from rot vents and other materials such as flashing or caulk.
Estimate how many roofing nails you ll need.
Our calculator will help you estimate the amount of roofing shingles needed for your project plus the cost of materials and accessories.
You will also need 5 nails for each starter shingle.
How shingle quantities are measured.
For example you will need to figure out the exact number of shingles required to cover the entire roof area.
Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house.
Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material.
The most common type of shingle called a three tab or strip shingle is generally packaged three bundles per square.
This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof.
How to calculate the amount of roof shingles you need.
Roof shingles are sold by both the bundle and by the square.
For high wind areas use 6 nails per shingle or 480 nails per square.
High wind areas and other types of shingles may need more.
So in the gable roof example above you would need 240 squares of underlayment.
To estimate the correct amount of materials and accessories needed for the job follow the steps below.
Underlayment usually comes in rolls of 4 squares each.
Simply enter your roof dimensions and roof type such as gable or hip and approximate roof pitch.
A square of shingles is the quantity needed to cover 100 sq.
The more accurate your estimates the less time you ll waste waiting for material deliveries during the project.
When you are replacing your roof you need to calculate the number of roof shingles you need.
At 4 nails per field shingle that s about 320 nails per square.