Once you’ve figured out the pitch of your roof, you can consult the following chart to discover the slope factor and hip & valley factor. This means: $$Area\,covered\,by\,roof = 20 × 40 = 800\,square\,feet$$. Pitch is expressed as a ratio of the vertical rise to the horizontal span. Have questions for the Everlast Roofing Team? The surface area of the roof is found by multiplying the number found in Step 3 by the number found in Step 1: $$Surface\,area\,of\,roof = Area\,covered\,by\,roof × Roof\,pitch\,factor = 800 × 1.12 = 896\,square\,feet$$. The pitch of your roof is determined by the measurement of the vertical rise by the horizontal run. Download Roof Pitch Factor and enjoy it on your iPhone, iPad, and iPod touch. The roof pitch factor will help in figuring out the exact roof estimate. A roof pitch multiplier, also known as a roof pitch factor, is a number that, when multiplied by the area covered by a sloped roof, gives the actual area of the roof. To obtain an accurate roof pitch measurement, properly measure the rise and run. And one of the criteria for the quality of the roof is its slope. For product recommendations based on the slope of your roof. Although there’s isn’t any standard pitch of a roof used on all kinds of sloped roofs, you can determine the range of pitches by using a roof angle calculator and by considering factors … For example, if a roof has a pitch of 2/12, then for every 12 inches the building extends horizontally, it rises 2 inches. It is sometimes called the roof pitch … In order to calculate roof pitch, find every inch the roof will rise for every 12″ it runs or spans. You need to first figure out the dimensions of … The roof pitch is a measure of roof steepness. So how do you use the roof pitch multiplier to find the surface area of a roof? Using a tape measure, make a pencil mark 12 inches from the end of a carpenter’s level. The roof slope factor, or pitch, of your home is a measurement of your roof's steepness. When outfitting your residential or commercial structure with roofing materials from Everlast Roofing, Inc., it’s important to know the incline, or pitch, of your roof. This will give you the rise over run, or pitch. For example, if the pitch of the roof is 6” then it is written as 6/12.This 6/12 roof pitch factor can also be described in other measures. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. Now, you’ll need to know the roof pitch factor to find the height of the ridge board – this requires some fancy math or, I prefer, I an easy chart like this. Additional roof details. So a roof with four inches of rise every … Measure from an exterior wall to an exterior wall and divide by two. The slope of a roof, often referred to as the pitch, is determined by “rise over run” - the roof’s vertical rise in inches for every twelve inches of horizontal length (the run). Let’s look at an example. Simply locate a roof rafter board, place the end of the level against the bottom edge and measure from the 12-inch mark vertically to the bottom edge of the rafter. Then, you’ll be able to measure slope from an unfinished attic space under the roof. For example, if you measure 4 inches, the pitch of your roof is 4:12. Quickly and easily find the pitch to a roof just by looking through your camera. We’ll be happy to discuss your options, as well as answer any questions you may have regarding Everlast roofing products. It also … Features: + Displays both Pitch Factor … Assume that your roof covers a region that is 10 ft by 15 ft and the pitch is 3/12. For regular hips and valleys, where the roof sections have the same slope and meet to form a 90-degree angle:. How to choose by James Long. For example, suppose you have a 4/12 pitch roof, and … Simply multiply this number by the area covered by a... Step-by-step example using the roof pitch factor table, Measure the dimensions covered by the roof. Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run. Roof pitch describes the slope, or angle, of the roof. Roof pitch = 6/12 Roof length including overhangs = 40' Gable wall length including overhangs = 24' Enter 6 into the calculator = slope factor = 1.1180 Multiply the roof length by the gable wall length = 40 * 24 = 960 Multiply this amount by the slope factor = 960 * 1.1180 = 1073.28 The area of this roof … Flat and nearly-flat roofs (a pitch of 1-in-12 or 2-in-12) cannot be covered with shingles or shakes of any material since there is not enough … Two most … We calculate that a pitch of 6/12 corresponds to the factor 12. Similarly, if your roof has a total RUN of 24 feet and a RISE of 4 feet, then the pitch is: The roof pitch conversion factor is a number that, when multiplied by the area covered by the roof, gives an estimate the total surface area of the sloped roof itself. Look up the multiplier in the table, or use the method outlined above. The combination of two numbers are used to display or show the roof pitch. Solving for RAFTER in the above equation gives: The roof pitch factor is then the length of the RAFTER divided by the RUN and is given by the following roof pitch factor formula: $$Roof\,pitch\,factor = {rafter \over run}$$. The horizontal measurement – or roof run – and the vertical measurement – the roof rise – are the most important factors to get right when making the roof pitch calculations that you need to make. Check out the conversion chart to find approximate roof pitch multipliers for different values of the pitch: Suppose you are interested in a roof with a pitch of 3/12. The reliability of any building, as well as the comfort of living in it, depends primarily on the quality of its roof. To see how pitch impacts the look of a garage and changes cost click the design center … Knowing roof’s pitch is essential in determining the appropriate installation method and how much roofing material you’ll need. In order to know what type of materials will work best for your project and the amount of materials required, you’ll need to find out the pitch of your roof. Multiply the result by the factor, and this is the length of the roof from base to ridge. The rise is the height of the roof at its highest point, and the run is the horizontal span of the roof, measured from the roof ridge to the side of the building. We can use the Pythagorean Theorem to find the RAFTER length corresponding to a horizontal span of 12 inches and a rise of 3 inches: $$Rafter = \sqrt{3^2+12^2} = \sqrt{153} = 12.37 \,in $$. Then, you’ll be able to measure slope from an unfinished attic space under the roof. It's a useful number to know for a number of reasons. The maths behind this number … Finally, there are finish details and prep details that absolutely affect the cost … The hip and valley factor is a number that is multiplied by the actual run (horizontal distance) of … It is sometimes called the roof pitch multiplier. Multiply the roof pitch and the run factor and voila, you’ve got the height of your roof pitch… For this example, suppose the roof is 20 ft wide (measured from the roof ridge to the edge of the building) by 40 ft long. In other words, the surface area is impacted by the slope of the roof. For roof slopes expressed as “X … It’s also an important factor … Contact us today so we can help you build your vision! For tile, shingle, slate and metal roofing Roof Pitch is a term used in the roofing industry to describe the angle (slope) of a roofing structure. For product recommendations based on the slope of your roof, contact an Everlast sales representative today. Most commonly, a roof pitch will be from 0 (flat) to 12 (45°… How roof pitch determines suitable roofing systems. Slope Factor Chart Pitch of Roof Slope Factor 3:12 1.0308 1.4362 4:12 1.0541 1.4530 5:12 1.0833 1.4743 6:12 1.1180 1.5000 7:12 1.1577 1.5298 8:12 A roof's pitch is determined by how much it rises vertically for every foot it runs horizontally. A greater slope means a greater correction factor in the form of the roof slope multiplier. Using a tape measure, make a pencil mark 12 inches from the end of a carpenter’s level. One medium to describe the roof pitch is in 12 runs. A roof pitch multiplier, also called a roof pitch factor, is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof. Roof pitch is a determining factor for cost of the roof, as well as the roof area, and the type of materials used. The formula for the roof pitch multiplier comes from the formula for a right triangle, and more specifically the Pythagorean Theorem: Here the RISE and RUN are defined as above, and the RAFTER is the length of the hypotenuse of the triangle with side lengths RISE and RUN. Then the roof factor is found by dividing RAFTER by RUN: $$Roof\,pitch\,factor = {12.37 \over 12} = 1.03$$. Get the pitch factor or degrees without remembering any complex equations or doing any calculating. Roof Pitch Angle and Slope Factor Charts Roof Pitch is a term describing how steep or flat your roof slope is. The roof pitch is described as Rise in Run, which is 12 units. There are lots of advantages that you … The roof pitch is essentially a measure of the steepness of your roof. The roof pitch multiplier is a number that allows you to find the total surface area of your roof. It affects walkability as well as drainage, and roofs in areas of high rain or snowfall tend to have … To obtain an accurate roof pitch measurement, properly measure the rise and run. Scale the surface area by the multiplier found in the table: $$Surface\,area = Area\,covered\,by\,roof × Roof\,pitch\,factor = 10 × 15 × 1.03 = 150 × 1.03 = 154.5\,square\,feet$$. Roof pitch factors. The pitch is defined as the slope of the roof, and is commonly represented as the ratio of the RISE over the RUN in the form x/12. Roof Pitch Factor Calculator If you have already decided that you are going to have pitched roof on your house then you have made a nice decision. Thus, a moderate “6 in 12” roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches … That is to say, the roof pitch (expressed as a ratio) tells you how many inches the roof … minimum roof slope of 3:12 for lapped, nonsoldered-seam metal roofs without lap sealant applied; minimum roof slope of 0.5:12 for lapped, nonsoldered-seam metal roofs with lap sealant applied ; minimum roof slope of 0.25:12 for standing-seam roof systems; Modified bitumen roofing should be installed on roof … The roof pitch conversion factor is a number that, when multiplied by the area covered by the roof, gives an estimate the total surface area of the sloped roof itself. The whole table of roof pitch and slope gives a conversion factor so as to obtain a numerical figure of the slope.This numerical figure is significant, as not everybody can understand the technical measurements.