Roof Ridge Runs Into Taller Roof

Ridge vents allow a home to properly vent while disallowing rain or other forms of precipitation to leak into the attic or crawlspace underneath the roof.

Roof ridge runs into taller roof.

Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the dropped structural ridge to the apex of the sleepers. The top of the ridge beam m y. The pitch of a roof determines the height of the ridge board that runs the length of the house. Essentially the spine of a conventional stick framed roof the ridge board is sandwiched between the meeting ends of the roof rafters.

Rafters are nailed to the ridge board and run down to overhang the exterior wall. In simple language the ridge of a roof is the peak where two opposing roof planes meet. Carpenters measure roof pitch as inches of rise per 12 inches of run. To scribe the angle we placed a length of stock on top of the rafter peaks and leveled it across using a scrap block to trace the angle.

To determine the y height measure from the bird s mouth up the calculated slope x in 12 to the top of the rafter. To determine the finished height of the ridge beam add the rise m and the y height. A 1 in 12 roof pitch roof rises 1 inch for every 12 inches of run. Determining the ridge beam height if you know the slope x in 12 you want to use for your roof framing design you can use it along with the run r to determine the height of the ridge beam.

The ridge is the peak where two sloped roof sections meet. Gable roof a gable roof has two upward sloping sides that meet in middle at the. The difficulty lies in getting it just right to keep any type of water from leaking through and damaging the roofing materials. The ridge is the horizontal peak of the roof.

If your goal is to only calculate the roof height do not enter any numbers in wall height field and only use building width and roof pitch fields. Part of a roof s frame a ridge board runs horizontally along the peak of a sloped roof. 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. For example if the slope is 4 in 12 and the run is 12 feet the ridge beam height m will be 4 feet.

Derek pater recently contacted us to do a review of his unique roofing protractor system. Equal amounts of cool air and warm air flowing through the vents is paramount for proper heat exchange. The tool simplifies many of the calculations that go into building a roof and is useful for all types of roof designs.