Howto Determine Where Roof Ridge Lies

Using the run of 4 i calculate the ridge at 16 length of bldg of 112 minus run on each end.

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. In this video i will look at how to calculate the length of the ridges on a broken hip and valley roof. Which if either of these calculations is correct. 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.

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. Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. The first step in a free roofing estimate is measuring the roof dimensions.

This will be the third of a series of three videos if. 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. You will need to express this size in terms of square feet. Subtract the shorter wall length from the longer wall length and add 1 5 inches for the length of the ridge beam or board.

This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. When you reach the top on the other side of the roof run that paper up and over as well. That way you ll end up with a watertight ridge. Enter square footage calculate or enter the square footage of the attic or area to be vented.