Metal Roof Gable Overhang

Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

Metal roof gable overhang.

However for larger extensions you ll need to hire a professional to get up there and remove large portions of the roof before extending the overhang. Rake trim also known as gable trim is a metal flashing finishing piece placed along the roofline at the sloped sides at the end of a residence s dormer or gable. Gable end detail overhang cut and then rebuilt to hide the thickness of the over roofing rigid insulation. Three inches is needed for overlaps and a minimum of 1 for ridge preparation.

For gabled roofs the roof rafters extending beyond the wall caps creating an angled roof overhang on the eaves. Extending a gable roof can be tricky since it involves working on the roof but you may be able to do it yourself if you only need to add 1 2 2 inches 1 3 5 1 cm. Then a 2 4 outlooker is placed over the dropped gable and butted into the side of the adjacent full height truss. Then the barge or fly rafter is attached to the end of the cantilevered outlooker.

That means you will have 4 of materials loss. It can be made of metal. For example if you had 10 0 of coverage then you would need a 10 4 piece of gable trim. It is cut angled and folded onto the roof line and fasteners usually evenly spaced between 12 and 24 inches apart set it in place.

Prior to preparing gable trim you will need to know the pitch of your roof. Of the many ways that gable end overhangs are built the two most common ways are the use of ladder details and outriggers. If a truss roof is used with this method the gable truss is manufactured 3 shorter than the others. The 6 inches of rigid insulation added to the top of the existing roof deck needed to be done in a manner that was invisible.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Gable end overhangs also known as rake overhangs extend all the way to the peak of the roof. Rake trim can be flat with no overhang or it can overhang the gable end like an eave. Due to the steeper angle of gable roof the maximum width of the eaves is narrower than other shed styles.

The biggest problems with gable end overhang strength occur if your roof overhang is greater than about 12 inches. A typical metal roof overhang may be 2 to 4 inches or even less. Now comes the really really big point.