How Far Over The Wall Should The Roof Extend

Connect the water control element layer of the roof to the wall the air control element layer of the roof to the wall the vapor control element layer of the roof to the wall and finally the thermal control element layer of the roof to the wall.

How far over the wall should the roof extend.

With a flat shed roof the roof simply extends past the wall plate to provide an overhang. 2 i call them the baker principles. Here phil explains how much overhang a roof should have at the gutter. How far should the roof extend over the gutter.

Over roof insulation the gable overhang has been cut flush with the wall sheathing. This will protect a roof from most types of damage. Because this style of a shed has a flat roof it can facilitate a wider overhang which is ideal for storage. Too little can allow water to seep into rake or fascia boards.

Some metal roofs have wood framed eaves that extend several inches or a foot beyond the house or shed wall to support metal roofing. The back edge of the gutter should tuck up behind the dripedge if you have it otherwise the edge of the shingles should extend well over the back half of the gutter so the drips cannot get behind it and rot the fascia board. My problem is that is it is on the fence line and it has no gutters. Coming from me it should by now.

A normal gutter will have about 1 2 3 4 of its width sticking out beyond the shingles to catch the runoff. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. How to extend rafters. Also note that a new fully adhered membrane is installed on the original roof deck replacing the one installed 17 years ago is folded down to catch the top edge of the wall water control layer.

This gets snow and ice drip line farther away from the building walls without the danger of the metal roofing bending under the weight. The outer ends of a roof s rafters the sloped members that give the roof its pitch provide shade divert rain and create soffit space for attic ventilation. Two feet is the general maximum length for a typical roof overhang. I have a lovely old bloke next door in his late 70 s who has 12 x 7 m carport that was installed pre google earth.