Standing Seam Metal Roof Flashing Details

Standing seam consists of sheet metal roofing panels joined side by side and attached to the roofing deck with concealed fasteners.

Standing seam metal roof flashing details.

This detail shows a method of detailing a valley condition on a standing seam roof. This manner allows for expansion and contraction to be controlled uniformly at one end of the roof. The copper roofing laps the valley flashing a minimum of 6 and is folded and locked into a continuous copper locking strip. There are four basic standing seam metal roof panel styles.

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. Endwall details for standing seam endwall option 1 using counter flashing panel goes down first then the z channel and then the endwall flashing then the counter flashing and finally the tube sealant. The connecting point where the two separate metal panels meet forms a vertically pointed rib or a seam that is one inch to inch and a half high.

The continuous locking strip is soldered to the valley flashing. Standing seam panels offer sleek lines that create a modern look. Thermal expansion contraction of steel panels metal flashing and trim should be installed with sealed end laps that allow for expansion and contraction. The panels can be roll formed at the job site or at your local roofing materials supply warehouse.

Clipless one piece positive locking standing seam panel that provides a timeless roof appearance. Then fillet with one part polyurethane. The trim and roofing sheet should be fastened every 12 to 24 inches along the gable edge. The most common flashing for standing seam roofing is the ridge cap which is used at the peak of a roof where two opposing roof slopes join and attaches to the roof with z flashing.

Detail of pipe flashing through a standing seam metal roof click on image to see larger version use unitized epdm rubber pipe flashings black preferred with stainless steel draw band. Panel endwall flashing counter flashing butyl tape or tube sealant. A typical standing seam panel can be approximately 12 16 and 19 inches wide. Panels should be installed with a fixed end and a free end.

Other flashings include gable trim which runs up the sloped ends of the roof and drip edge or eave trim. Mbci manufactures quality standing seam metal roofing panels that are lightweight and last up to 60 years. Locate round penetrations centrally in the panel seal with butyl tape beneath base.