Can you install metal roofing over shingles?

Can You Install Metal Roofing Over Shingles?

Short answer: sometimes.

In certain cases, yes—you can install metal roofing over an existing shingle roof. But it depends on a few key factors:

When It Might Be Allowed:

• Your local building code allows it
  Some cities permit a second layer of roofing if the existing one is in good shape.

• The current shingles are flat and dry
  No curling, no soft spots, no trapped moisture.

• Only one layer of shingles exists
  Most codes prohibit installing over multiple layers.

But here’s the thing: just because it’s allowed doesn’t mean it’s best.

Why We Usually Recommend a Tear-Off:

At The Roof Champion of Columbus, we typically advise a full tear-off for metal roof installations. Here’s why:

• We can inspect the roof decking underneath
  If the wood sheathing is rotted or soft, it won’t support a new roof properly. You won’t know unless we tear it off and look.

• We can install premium underlayment
  This adds moisture protection and fire resistance—especially important with metal.

• We ensure proper attic ventilation
  Metal roofs can trap heat without proper airflow underneath. Installing venting the right way helps extend the life of your roof—and lowers your energy bills.

• Cleaner, longer-lasting finish
  Fasteners, panels, and trims all sit better on a flat, even surface. It just looks and performs better long term.

What You Can Expect From Us

You won’t get guesswork. You’ll get a clear, honest answer based on:

• Your home’s structure

• Local code requirements

• What’s truly best for long-term performance and value

We’ve had homeowners in Dublin, Westerville, Grove City, and all around Columbus ask us this same question—and our answer is always customized to your home’s real conditions.

We’re not here to upsell. We’re here to protect your investment.

FAQ

Can a metal roof be installed over two layers of shingles?
No. Most Ohio building codes prohibit installing any roofing material over more than one existing layer. We always check local requirements before making a recommendation.

Does installing over shingles void a metal roofing warranty?
In some cases, yes. Manufacturers often require direct installation to approved decking with the right underlayment. Skipping steps could cost you down the road.

How much more does a tear-off cost?
It depends on roof size and how many layers need removed. But it’s often worth the added cost for the inspection access, proper sealing, and long-term durability it provides.

Is a metal roof really worth it in Columbus, Ohio?
Yes—if installed right. Metal performs well in all four seasons, especially with ice, snow, and wind. It’s long-lasting, energy-efficient, and great for resale when installed properly.

Need an honest assessment?

Give us a call or text at (614) 639-3422 or visit www.roofchampcolumbus.com to schedule your free estimate.

We’ll walk your roof. Inspect the layers. Show you real options.

No pressure. No games. Just the truth—because that’s how we do things.

“We don’t quit. We fight. We win.” – Travis Haessly, Owner