First determine the area of the roof plan by multiplying the length of the roof by the width. Calculating an area of a triangle when estimating a roof. (1,200 x 1.05 = 1,260 square feet. At first glance, calculating the area of a triangular, sloped surface seems like an extremely tricky task. The do it yourself resource for homeowners from home improvement professionals. I decided to use the pitched roof simply because it is one of the most easiest to analyse. However if you have a PDF file/drawing of the roof plan, it is very easy to get the roof area. (Be sure to include overhangs. Roof A and B can be calculated separately or together. We include on-roof measurements, roof measurements or estimates that can be made from ground level, and several neat tricks using a folding ruler to measure roof angle or slope. Here, our roofing installation experts share two ways for how to calculate roof area: To calculate the area of your roof, first you’ll need to calculate the pitch of it: If you don’t want to do a lot of measuring, you can use your pitch calculation to get an estimated square footage of your roof: If you want to get the exact area measurement for your roof, you can follow these steps: Check out our reviews and let us know how we’re doing. See the image below for more explanation on rise, run and pitch. (For example, if your rise is 4 inches, your roof’s pitch is 4 in 12. Once you have these measurements, you can calculate your roof area as follows: Roof width (m) x rafter length (m) = half roof area (m²) The above calculation estimates the area of half of your roof so you will need to double this to get a final estimate of the full roof area. Every 100 square feet of roof area is referred to as a square, regardless of the type of roofing material. ), Multiply your house length by your house width to get the area. Slope factor is hypothenuse divided by 12: Surface of the roof = house surface x slope factor: Posts are reviewed by an admin beofore showing on the website. To accurately calculate the area of your roof, you must first determine its slope, or pitch. Make light lines on the plan with a pencil. It’s all done on-screen automatically; no manual calculations needed. The informations provided by our website are generic and they should not be used for purchasing construction materials - for that please consult a specialist. To measure the roof, start off by squaring every section of the roof off. 21 Industrial Blvd How about pitch?

- (The square root of 10/9 is 1.05. Hip roof is a roof with a sharp edge or edges from the ridge to the eaves where the two sides meet. (If your number is 1/3, squared would yield 1/9. ), After that, measure the width of your house. Using digital plans you scan in or receive from the architect you can quickly determine roof area and determine what needs to be ordered. It is easy to miss a roof slope on a complicated roof. Divide your roof pitch by 12. So, the total catchment area of this roof is = (A*B) + (C*E) + (D*E)/2. Calculating the Area (Estimated) If you don’t want to do a lot of measuring, you can use your pitch calculation to get an estimated square footage of your roof: Once you have your roof’s pitch, divide the number by 12. There are various rooftop measuring tools online. Save to bookmark, share with friends - useful tool will be always at hand. Write this number down. A hip roof is a common roof style characterized by 2 pairs of opposing faces sloping downward from a high peak. Roofing calculators online: truss system, area, pitch, all materials. Dividing by 12 gives the ratio of inches in rise per distance. After that, place your level against the gable trim and flat against the side of the house. Hip roof framing plan (truss layout) Jack rafters layout (left side: №s5-s8, s9-s12, s21-s24, s29-32) ... With our program you do not need to think about how to calculate the hipped roof area for the purchase of necessary materials, all data is available in our calculator kalk.pro. Every architect and professional construction company have a program to calculate a roof. ), Determine the square footage of one floor of your home. In this example, we will look at PlanSwift the leading program on the market. The roof’s pitch is the number of inches the roof rises in 12 inches. This number is your rise. That gives you 5,590 square feet, which is the actual area of the surface of the roof. Click Quantification tab Areabook Extension panel (Calculate Areas). In . 1. Place your ladder onto your home at the end of the gable Climb onto your roof Roof pitch is given as the number of inches in height change over the distance of one foot. ). A “12 in 12” pitch is a steep, 45-degree angle roof. All these tools are free and we hope - easy and intuitive to use. Enter the dimensions below, then click calculate to calculate the Area. Roof area of your building . Next, square your result. So lets say for a house of total length of the front is 1.8m or 60ft . (1/9 + 1 = 10/9. ), Next, figure out the square root of your new number. Here you will find roofing related tools like: roof area calculators, roof materials calculators, pitch calculators, geometric shapes calculator. a Slab with hole, pictured here), there are several ways to do it. And that’s the number you were looking for. (1,300 x 1.05 = 1,365 square feet. In this drawing a 1/8″ scale ruler is being used. First, use your measuring tape to measure 12 inches on your large level and make a mark at the 12-inch line. - House surface (plus the area with which the roof extends outside the house - it can be calculated by multiplying the extension with the perimeter of the house). The first thing to check is what scale the roof is drawn in. Ridge vent openings are best finished with coil rather than partial shingle. Compiled by Chris Thomas, The Tiled Roofing Consultancy, 2 Ridlands Grove, Limpsfield Chart, Oxted, Surrey, RH8 0ST, tel 01883 724774 (l×h)/2 = Area. The average person knows that area is usually calculated by multiplying the length of an object by its width, but for a sloped surface one of those measurements is difficult to determine exactly, even with the help of a ruler or measuring tape. ), Next, multiply the area by your roof’s pitch. By continuing to browse the site you are agreeing to our use of cookies. Google Maps provides an area measurement feature. ), Multiply this number by your most recent result to get the estimated square footage of your roof. Here is the online hip roof area calculator which helps you calculate the hip roof parameters such as roof rise, common and hip rafters length and roof area based on width, height of roof base and the roof pitch (identical for all sides). Custom Pixel Works In the Calculate Areas dialog, specify the calculation Type. Take the area of the roof’s footprint, say it's 5,000 square feet, and multiply 5,000 by 1.118. For a rectangular house, this is simply done by multiplying the length by the width of the roof. (Your total number would be either 1,386 or 1,474 square feet. The default for calculation is Standard. Using your measuring tape, measure from the 12-inch mark on your level up to the bottom edge of your gable trim. Calculate the defined areas in your project once the rooms, project standards, and room assignment types are assigned. We use cookies to give you the best online experience. If you wish to find out the area of a construction element (e.g. If your roof plan is more complicated, break it up into smaller more easily calculable areas and then add those areas together for the total area. (For example, if you have a two-story home that’s 2,600 square feet, one floor would be 1,300 square feet. say ‘x’, measure the breadth ‘y’. Given pitch and a horizontal area measurement, multiply the horizontal area by a correction factor corresponding to pitch, provided in the table below, to determine the actual area of the roof to be used in the Roofing Material Calculator. Hip Roof Area Calculator. If you’re in need of a new roof and want to find out how much it’ll cost, you can calculate the area of it, then use this number to estimate the cost of shingles per square foot. 1 roof square = 100 square feet; The length (l) times the height (h) of a triangle is twice its area (A2). [gravityform id="20" title="false" description="false"], , How to Replace a Bathtub in a Small Bathroom, How to Install a Ring Doorbell on Vinyl Siding, How to Hang Christmas Lights Outside Without Nails. Roof A & Roof B dimensions will provide the total exposed roof areas (the hidden area is subtracted from the total). will add an arbitrary value for the difference in length due to the pitch . (For example, 40 feet x 30 feet = 1,200 square feet. Therefore, mark off 12 inches on the level and place it down horizontally against the roof rafter. Count how many different squares or areas you have. While it is possible to estimate the amount of necessary materials using only the total roof area measurement, as can be seen from the table, depending how large the pitch of … The same method is used for gable roofs. Calculating roofing material needs is a cinch with PlanSwift. Most roofing contractors typically measure a roof by calculating the area of a roof and then adding on 10% for possible waste.