Standing seam panels run from eave to ridge with raised seams and hidden clips, so no fastener goes through the face of the panel. We supply the coil, clips, tools and roll formers to make and install them.
Seam types
Snap-lock
The male and female legs snap together over hidden clips. No seaming tool is needed, so installs go faster with fewer tools. Press the whole length of each seam until it is fully engaged. Snap-lock panels come in single-lock and double-lock styles, and the panel maker sets the minimum slope for each.
Mechanical lock
The seam is folded closed with hand tools or a power seamer. A single lock is the first 90-degree fold. A double lock folds again to 180 degrees. Double-lock seams are the usual choice for low slopes and snow country. They take more labor and more tools.
Panel faces
- Flat pan. No ribs, the cleanest look. It is the most likely to show oil canning, especially in wide aluminum pans. Closed-cell backer rod under the pan helps.
- Clip relief. A small offset along each side makes room for the clip and screw heads so they don’t print through. It adds a little stiffness too.
- Stiffening ribs. Two flat ribs in the pan help against oil canning. They reduce it but can’t guarantee against it.
Oil canning also depends on the deck, the panel width, the gauge and the install. A flat, clean deck and clips that aren’t over-tightened help more than any profile.
What we supply for standing seam
- Coil: aluminum in .032″, .040″ and .050″ and steel in 24 and 26 ga, in Kynar 500 colors. See coil and sheet.
- Clips and fasteners: fixed, floating and snap-lock clips and pancake-head screws.
- Sealing: butyl tape and backer rod from our sealants section, and high-temperature underlayment.
- Tools: WUKO benders and seaming pliers, Malco hand seamers and the ESE K9 power seamer.
- Machines: roll formers to form your own panels from our coil.
Ask us about this line: call or send a quote request and we will tell you what we can supply.
Profile drawings, color charts and warranty documents are on the documents page.
Questions
Snap-lock or mechanical lock?
Snap-lock installs faster and suits most residential slopes. Mechanical lock, especially double lock, suits low slopes, long panels and heavy snow.
Aluminum or steel near the shore?
Aluminum. Many finish warranties exclude or limit steel close to salt water. Ask for the warranty terms before you order.
Will stiffening ribs stop oil canning?
They reduce it. A flat deck, the right gauge, backer rod under flat pans and careful clip installation matter just as much.
Do you sell formed panels?
Ask us. We supply the coil, clips and machines, and we can tell you the options for formed panels for your job.