When used as a drip edge it should be a minimum of 0 69 mm or 20 ounces.
Minimum roof verge overhang.
Eaves form the overhang to distribute water clear of the walls.
An eave is the edge of the roof that overhangs the face of a wall and normally projects beyond the side of a building.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
If a sprocketted.
The following illustrations and text explain the common design details using eaves and verges that can occur on refurbishment and new work.
They also help to frame windows on upper stories.
Eaves courses of tiles should be at same pitch as general tiling.
Too little can allow water to seep into rake or fascia boards.
The siding underneath the overhang is known as the soffit.
A typical metal roof overhang may be 2 to 4 inches or even less.
B where the roof overhang exceeds 900 mm measured along the roof slope from the edge of the roof to the inner face of the exterior wall c on roofs of asphalt shingles installed in accordance with subsection 9 26 8 d on roofs with slopes of 1 in 1 5 or greater or e in regions with 3 500 or fewer degree days.
Minimum 24 gauge steel is preferable so that the drip edge can withstand strong winds.
That is their functional purpose.
Too much overhang and the shingles could blow off in high winds.
Overhangs are common in most house designs providing protection against both wind and rain.
Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction.
The edge of the shingles should hang over a roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed.
Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.