Howto Determine Where Roof Ridge Lies

In this video i will look at how to calculate the length of the ridges on a broken hip and valley roof.

Howto determine where roof ridge lies.

The building line is the point from which you start to calculate the run of your common rafters to the centerline of the roof. This will be the third of a series of three videos if. Subtract the shorter wall length from the longer wall length and add 1 5 inches for the length of the ridge beam or board. You will need to express this size in terms of square feet.

When you reach the top on the other side of the roof run that paper up and over as well. Using the end common rafter length i calculated the ridge at 6 3 8 by taking the length of the bldg of 112 minus both end common rafters of 105 5 8. I also assume you ll be using a 2x material for the ridge board. If you ever wondered how to figure your overall building height or roof height here we have a calculator to make life a little easier for you.

The first step in a free roofing estimate is measuring the roof dimensions. When you reach the top of the roof run your last row long photo 6 and drape the paper over the peak top ridge onto the other side. Using the run of 4 i calculate the ridge at 16 length of bldg of 112 minus run on each end. Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more.

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. As a reminder please don t forget to add height of rafter thickness of roofing material and ridge vent to the number that you ll get using our calculator. This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. Which if either of these calculations is correct.