A drip edge is not needed for metal roofing. If you make sure to overhang your metal roofing at least an inch, the drip edge is not necessary at the eaves and rakes. If the metal roof is hanging over an inch, the water will be directed away from the fascia anyway if at a slant.
Where does drip edge go on a metal roof?
Drip edge is metal flashing installed at the edges of the roof to keep water away from your fascia and from getting underneath your roofing components. If your roof doesn’t have drip edge, water gets behind your gutters and rots out both your fascia board and roof decking.
Do all roofs need drip edge?
The 2012 International Building Code (IBC) requires drip edges for that type of roof. Regardless of the kind of roof you have, we highly recommend installing drip edges. Keep in mind that improper installation of any roofing component can create gaps, rendering any waterproofing solution useless.
How far should a metal roof overhang the drip edge?
A typical metal roof overhang may be 2 to 4 inches, or even less. Some slight overhang is recommended, in conjunction with a drip edge flashing, to prevent water from getting under the roofing and onto underlying wood.
What goes on edge of metal roof?
Eave trim is the metal flashing that covers the low side of the building. Simply put, it’s installed on the side of the building that follows the pitch of the roof. Eave trim is used when a gutter is not required. … Eave trim is also referred to as drip edge or eave flashing.
Should drip edge be tight to fascia?
A vertical drip edge lip extends down roughly 1 5/8″ and as Steve points out, should not be set tight against the fascia board or water may run behind the gutter and down the fascia, inviting leaks and rot.
Do you need flashing on a metal roof?
Roof flashing is a thin metal material that roofers install to direct water away from certain areas (walls, chimneys, roof valleys) of your roof. It’s a crucial roofing material that every roof needs to have. … These common types of metals are aluminum, steel, or copper.
Should there be a gap between drip edge and fascia?
The best installation method is to leave a gap between the drip edge and the fascia board, about the width of a finger. The shingles should also overhang the drip edge 3⁄8 to 1/2 an inch.
Do gutters need to be under drip edge?
It is recommended that gutters are placed under or ‘behind’ the drip edge of your roof. … If gutters are installed below the drip edge, water can drip behind the gutter and cause damage to the wood supporting the gutter system.
Why do you need drip edge?
A drip edge is an angled piece of flashing that is installed over top of a fascia board. The purpose of a drip edge is to help redirect water from the fascia and into the gutters. The gutters then carry this water away. Drip edges can be installed on the rake, eaves, and gable of your roof.
Can you put rain gutters on a metal roof?
Gutters can be installed on homes with metal roofs, as long as the system is attached to the fascia board with brackets or spikes and ferrules. … First, gutter systems should be mounted as high as possible when part of a metal roofing drainage system.
What do you put down under metal roofing?
The traditional and most common material used for roof underlayment on a steep-slope metal roof is non-perforated, asphalt-impregnated felt underlayment. There are several types of felt underlayment including both organic reinforced and inorganic reinforced.
How much overhang do you need for a metal roof?
To provide a drip edge, allow an overhang of 1 to 2 inches at the eave. At the gable edge, use a gable or sidewall flashing. This will keep weather out, prevent lifting in high winds, and provide a neat, finished appearance. The trim and roofing sheet should be fastened every 12 to 24 inches along the gable edge.