Flashing The Top of a Standing Seam Metal Roof That Butts a Wall

Installing a standing seam metal roof is a straightforward process for simple roofs like the one in this video by Union Corrugating, showing how to install endwall flashing with standing seam panels.

How to install the Z-closures at the top of standing seam metal roof panels

• Install the z-closures.
• Apply butyl tape sealant to the bottom of the z-closure.
• Install z-closures with pancake head wood screws at 3" on center or a minimum of 4 per z-closure.
• Field cut z-closures to fit between panel ribs.
• Install screws 3 inches on center.
• Apply tube sealant to the ends of the z-closure adjacent to the panel legs.
• Hook the endwall trim to the z-closure.
• Secure the endwall trim to the z-channel with pop rivets spaced 18" on center along the length of the trim.

Three options for counterflashing the endwall trim

OPTION 1: Surface Mounted Counterflashing

• Fasten the counterflashing with customer-supplied anchors spaced 18 inches apart.
• Apply tube sealant continuously along the counterflashing, generously filling the space between the flashing and the wall.

OPTION 2: Siding

• Fasten the endwall trim with pancake head wood screws spaced 12" on center along the length of the trim.
• The trim will be covered once the siding is installed.

OPTION 3: Reglet

• Cut groove approximately 1" deep in masonry above trim to receive the reglet.
• Reglet should be placed in the groove.
• The groove should be filled with tube sealant.

More videos on installing standing seam metal roofing

• Hemming An Eve and Rake on a Standing Seam Metal Roof
• How to Flash a Masonry Chimney Into a Metal Roof
• Model Remodel Show: Metal Roofs are Forever