Standing Seam Metal Roof Installation Details

Unlike steel and aluminum shingles standing seam panels should not be installed over the existing asphalt shingles.

Standing seam metal roof installation details.

If you have chimneys skylights dormers and or valleys on your roof we recommend you leave this task to a seasoned professional installer because it s really easy to make costly mistakes when installing metal flashing and other details. 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. For nail strip panels one pancake screw is required every 12 24 inches depending on wind requirements. 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.

We cover all the basics of metal roof installation. For do it yourself enthusiasts for your first installation we recommend installing standing seam on a simple gable roof with minimum roof penetrations. From underlayment venting layout. Pancake screws are used because they are strong and yet have a low profile that does not interfere with panel and trim installation.

Standing seam consists of sheet metal roofing panels joined side by side and attached to the roofing deck with concealed fasteners. Panels are mechanically attached with hidden fasteners to a continuous solid substrate with an underlayment. Step by step instruction on how to install a standing seam metal roof.