How Many Square Feet To Add To Roof For Pitch

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.

How many square feet to add to roof for pitch.

Estimate the pitch of the roof. Roof pitch is given as the number of inches in height change over the distance of one foot. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Roof pitches in degrees.

Next you will need to use a roofing materials calculator. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. You will need to express this size in terms of square feet.

Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100. 100 1 054 105 4ft 2. For example a 4 12 pitch roof that is 100 square feet. Enter your numbers into this go to roof pitch calculator.

Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. If you know the total height of the peak and the width of the roof you can also find the pitch with a little math. For example if the peak is 4 feet and the total roof with is 20 feet the total rise is 4 feet or 48 inches. As an example if your overhang is 12 inches you ll add 2 feet to the overall length and 2 feet to the overall width of the house.

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 answer is the number of roofing squares for the roof. This nominal square footage amount is then multiplied by a factor associated with the roof s pitch. Dividing by 12 gives the ratio of inches in rise per distance.

However shingles are packaged in a way that they are light enough for the average person to carry around. It is often compared to slope but is not exactly the same. Divide your roof pitch by 12. Your roof is without a doubt one of the most important elements of your home.

Check that your footage measurements are within this range so you can start off on the right foot. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.