Why You Shouldn’t Install a Metal Roof Over Shingles

Why You Shouldn’t Install A Metal Roof Over Shingles

You want to install a metal roof, but you don’t want to have to tear apart your existing shingles. Can you save money and time by simply installing the metal roof over it? Many issues can arise from installing a metal roof over shingles.

When installing a new metal roof, you want it to last. At Nelson Contracting, we provide roofing solutions that endure Nebraska’s weather and climate. If your in the Lincoln or Omaha area, we’re the team to call if you want your metal roof installed the right way.

Six Problems With Installing a Metal Roof Over Shingles

Installing a metal roof over shingles may seem like an easy fix, but it will inevitably lead to long-lasting issues. Before you make this mistake, consider the consequences below, then call us at (402) 464-2418, for the best advice about installing a new roof on your property.

1. Added Weight Compromises the Roof’s Integrity

Standing Seam Metal Roofing

By installing a metal roof over shingles, you’re compromising the integrity of both materials. If you’re installing a metal roof, your shingles are likely older. They may not be able to bear the weight of a metal roof on top of it. This poses a safety hazard and can cause serious damage to your home’s structure.

2. You’ll Spend More Money Over Time

While you might think you’re saving money by not removing your shingles before installing a metal roof, you’ll end up spending more on repairs in the long run. Roof replacements allow you to replace any roofing components that are old or reaching the end of their lifespan. If you don’t go through this process while installing a new roof, you’ll only have to do more extensive repairs later.

3. You Can’t Inspect Your Roof’s Decking

When installing a new roof, our expert roofers will start with a tear-off of the old roof down to the decking. At this stage, we can inspect your roof’s foundation. This is a vital step, as we can look for signs of rotting and fix any potentially dangerous issues. Many roof replacements require at least a partial decking replacement. If you put metal roofing over existing shingles, the layers of roofing materials will only bury the issue.

4. Leaking Is Likely

Man Dealing With Roof Leak

Despite the many benefits of a metal roof, it can cause more problems than it solves without proper installation. Finding and repairing a leak is already a difficult roofing project, but it’s even harder if the water leaks through your metal roofing into your asphalt shingles. Then, the roofing repair team has to go through the metal roof to the layer of shingles to fix it.

5. Shorter Lifespan

When our expert team properly installs a metal roof, it can last 40-70 years. However, if you try to take a shortcut and install the roof over asphalt shingles, it won’t last nearly as long. It will still have the benefits of being:

  • Environmentally friendly
  • Fire-resistant
  • Aesthetically pleasing

However, it will not be low maintenance, as owners of metal roofs expect. You’ll likely have to invest in frequent repairs and replacements.

6. Potential for Mold Growth

Mold Roof Deck

When you install a metal roof over shingles, moisture can get trapped between the materials. Left unattended, this moisture could leak into your home and cause extensive water damage, leading to mold growth. Prolonged mold exposure can lead to itchy eyes, irritated skin, and respiratory problems like persistent coughing and wheezing.

Schedule a Free Inspection With Nelson Contracting

Now that you know why you shouldn’t install a metal roof over shingles, you might wonder what your next move should be. That’s an easy question: Contact the experts at Nelson Contracting. We will provide you with a free inspection and estimate.

Here at Nelson Contracting, we’re passionate about going above and beyond for each of our clients. We provide excellent quality on every project while prioritizing customer service. Call (402) 464-2418 today to speak with a representative near you.

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