How To Figure Roof Shingles

Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house.

How to figure roof shingles.

You will then have to get the measurement of the rake of the roof. 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. Add the price per square of materials to get an estimated material cost. Measure both the width gable side and the length eave gutter side.

To accurately calculate the area of your roof you must first determine its slope or pitch. How roof pitch is calculated to accurately calculate the area of your roof you must first determine its slope or pitch. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. Dimensions measured from the ground.

As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. To do this you need to note that one tab will be equal to 1 foot. Estimating shingles 1 find the square footage of the roof. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.

However shingles are packaged in a way that they are light enough for the average person to carry around. Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house. The run is the distance from the outside edge of a perimeter stud wall to the center of the house. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

It is often compared to slope but is not exactly the same. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. You will need to express this size in terms of square feet.

The rise is the distance from the top of a stud wall to the peak of the roof. 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. The first step in a free roofing estimate is measuring the roof dimensions.