Formula For Measuring A Hip Roof

Add the areas of the faces of the hip roof to find the total area of the hip roof in square feet.

Formula for measuring a hip roof. Doing so will give you the total square footage of your roof. Step 5 multiply the total square foot area of the hip roof by 5 percent or 05 for the amount of extra roofing material you ll need to allow for waste due to roofing error or damaged material. The square footage of a hip roof area is identical to the square footage of a gable roof of the same size. Here you can calculate hip roof parameters by hip raise and.

H b x tan α 2 common rafters b 2 x cos α hip rafters h 2 b 2 2 hip roof area 2 x common rafters x roof base length where h roof rise b roof base width α roof pitch tan tangent cos cosine. For many people being able to get the right kind of hip roof calculator is very important as knowing how to measure a hip roof is going to be vital to making sure that it turns out well. A hip roof s square footage is equal to that of a gable roof with the same dimensions. The difference is in the amount of ridge capping you need and the amount you will waste.

The pythagorean theorem allows you to calculate the length of the hip rafter without measuring it directly which requires you to climb onto the roof. If you are trying to undertake this all yourself then you should really be looking for the most effective way of working out things like the hip roof square. If you re trying to work out the total area of the roof of a square building simply multiply the area of one of the identical faces by 4. The only difference in this calculation to the one for a gable roof area is the amount of the ridge.

Add the combined areas of the 2 longer faces with those of the 2 shorter faces. This theorem states that the length of a right triangle s hypotenuse is equal to the square root of the sum of the squares of the lengths of the triangle s other two sides. The top ridge will be shorter for a hip roof but the 4 hips will add to the amount of ridge capping needed and because of the angles the amount of waste will be higher than for a similar sized gable roof. Calculate the amount of asphalt or fiberglass shingles needed to cover a hip roof.