Why Your Metal Roof Panels Look Wavy and How We Fix It

Oil canning. It's that wavy, rippled look you sometimes see on metal roofing panels - and it's one of the most common complaints homeowners have after getting a metal roof installed. The frustrating part? It's almost always preventable. It comes down to how the panels are prepped and handled before they ever go on the roof.

Here's what we do differently. Before a single panel goes up, we run backer rod along the panel faces where needed. That small step - easy to skip if you're rushing - is what keeps the metal from buckling or flexing once it's locked in place. Proper prep work matters just as much as the installation itself. We also use Polyglass Polystick MTS Plus high-temp underlayment under the panels, which is the right call for the kind of heat these roofs take in the Southwest.

The result is panels that sit flat, stay flat, and look clean from every angle. No waves. No ripples. Just a tight, uniform finish across the whole surface. That's what a well-installed standing seam metal roof system should look like - and honestly, it's not hard to achieve when the crew slows down and does things right the first time.

Metal roofing is a long-term investment. Most homeowners who go this route are expecting 40-plus years of performance out of it. That's exactly why we don't cut corners on the details that don't show up in photos - the prep, the underlayment, the backer rod placement. Those are the things that determine how your roof performs and looks years down the road, not just on day one.