How To Install Standing Seam Metal Roof Panels

A typical standing seam panel can be approximately 12 16 and 19.

How to install standing seam metal roof panels. Overlap the end a minimum of six inches when starting a new roll of underlayment. In cold weather slide the panels tight against the eave flashing and in warm weather allow a gap for expansion. First of all if you install a standing seam metal roof over asphalt shingles there will be a so called telegraphing effect where shingles can punch horizontal lines in standing seam panels. This technique provides the cleanest look and shows no exposed fasteners.

Standing seam consists of sheet metal roofing panels joined side by side and attached to the roofing deck with concealed fasteners. Allow each consecutive course to overlap the previous one by at least four to six inches. Fasten panel side with number ten pancake head screws and the top of the panel with three number fourteen mill points. Start the installation of the underlayment at the intersection of an eave and a gable end and then roll it out parallel to the eave end.

There are two main reasons. 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.