Roof Slope Overhang Details

There are two common problems encountered with roof overhangs.

Roof slope overhang details.

In all cases it is important to properly detail and install the edge conditions. You need to consider the slope requirements of each panel to determine this minimum slope. The profile is the shape taken by the sheets when you bend them to form panels. Position the square at the end of the rafter board with the tongue on your left and facing away from you.

Add the length of the overhang beyond this mark and. I e 4 inches of rise per 12 inches one foot of run. At the rakes however with a nod to yankee frugality and clean modern lines we kept the roof trim as close to flush as practical while still allowing for a rain screen channel ventilated at the top as well as the bottom. The most common slopes are.

3 12 1 2 12 and 1 4 12. If the upper edge of a low slope shed roof intersects a vertical wall the most logical approach in my opinion is to detail the roof as an unvented roof. Eave overhang detail with that in mind we kept a roof overhang at the eaves as it provides a nice shadow line and protects the second floor windows from a bit of the summer sun. When looking at metal roofing panel you will need to.

Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. The roof overhang is too wide. The original rafters are extended but original roof deck sheathing cut back to be flush with the original wall sheathing. Always try to carry membrane felts over or up and over and down to ensure the roof membrane will always drain free and clear of any adjacent system.

The minimum slope of a roof depends on the roof s profile. If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss the roof slope is said to be 4 12. Roof slopes are most commonly defined by the rise over run ratio. Membrane recommendations for these roof systems for various slopes.

The roof overhang does not extend far enough. This leads to a situation where there is an excess amount of shade and the exterior of the home appears dark and gloomy. Express the slope of a metal roof by a ratio which indicates the pitch of the roof. On the front of the roof edges of the roofs the overhangs were extended to hide the thickness of the roof insulation photograph 10.