Can You Put a Metal Roof Over Shingles?

If you're considering a metal roof for your home or commercial building, you might wonder whether installing it over your existing shingles is possible.

It's true that, in some cases, you can put a metal roof over shingles. However, it's not recommended and many professional roofers worth their weight won't agree to do it.

In this guide, we'll outline the potential hazards of installing a metal roof over shingles and why removing shingles first is the right way!

Metal Roof Over Shingles: What's The Risk?

Most property owners want to install a metal roof over shingles to help save time and money by eliminating the need to remove older shingles. However, there are many reasons why this can spell trouble for your roof:

  • Any issues with your existing shingles, such as leaks or damage, will not be addressed and will affect the integrity of your new metal roof.
  • Certain building codes or regulations may prohibit this practice, meaning you must first check with local ordinances.
  • Installing a metal roof over shingles can add extra weight to your roof and may not be suitable for roofs that are severely damaged or have structural issues.

Other Serious Problems You Want to Avoid

Remember that placing metal roofing over shingles does not address any pre-existing issues.

  • For instance, if the shingles or deck beneath the metal roofing are already old or damaged, they may not provide a stable base for the metal roofing, leading to serious problems in the future.
  • Additionally, there is a risk of moisture becoming trapped between the metal roof and the existing shingles, which can result in rot, mold, or other types of damage over time.
  • Finally, installing metal roofs over shingles can cause the existing ice and water barrier adhesives to bleed out. Metal roofs require high temperature ice and water barriers instead of traditional ones. Therefore, placing metal roofing over shingles isn't technically compatible.

Can You Put a Metal Roof Over Shingles

While it's possible, it's not recommended. Instead, your roofing contractor should remove the old shingles first. Doing so allows for a clean, even surface for the metal roofing panels to be installed on.

Additionally, by removing the old shingles, roofers can identify any underlying issues with the roof structure or decking.

What's the Best Way to Install a Metal Roof?

Before installing the metal roof, it's essential to ensure the roof deck is structurally sound and free of any rot or damage. Any necessary repairs should be made before installation.

Again, this is why it's recommended to remove old shingles first before installing new roofing.

Benefits of Metal Roofs

There's no doubt that metal roofs offer some great advantages, including:

  • Providing a long-lasting, durable, and energy-efficient solution
  • Helping reduce energy costs by reflecting sunlight and keeping homes and buildings cooler
  • Increasing the resale value of your property

So, What's Your Next Step?

To ensure the proper installation and integrity of your new metal roof, contact All Element, Inc. today!

Our roofing contractors will inspect and evaluate your roof's condition. From there, we'll create a comprehensive plan and estimate to remove the old shingles, repair any existing issues, and professionally install your brand-new metal roofing so you can start enjoying its cost-saving benefits for years to come.

Whether you're a commercial or residential property owner, contact us today for a professional roofing inspection.

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