How To Figure Roof Shingles

It is often compared to slope but is not exactly the same.

How to figure roof shingles.

Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house. 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 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. 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.

Estimating shingles 1 find the square footage of the roof. 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. Roof pitches are described in terms of rise and run. The first step in a free roofing estimate is measuring the roof dimensions.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Add the price per square of materials to get an estimated material cost. Calculate the size of your roof and estimate how many bundles of asphalt shingles rolls of felt and squares of roofing material are needed for a new roof. 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. How roof pitch is calculated to accurately calculate the area of your roof you must first determine its slope or pitch. 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.

You will then have to get the measurement of the rake of the roof. The run is the distance from the outside edge of a perimeter stud wall to the center of the house. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

However shingles are packaged in a way that they are light enough for the average person to carry around. The rise is the distance from the top of a stud wall to the peak of the roof. Dimensions measured from the ground.