Layering Up: Can You Put a Metal Roof on Top of Shingles?

When it comes to roofing options, homeowners have a multitude of choices, each with its own set of advantages and disadvantages. If you already have shingle roofing and are contemplating a switch to a metal roof, you might be wondering, “Can you put a metal roof on top of shingles?” In this article, we’ll explore the feasibility, benefits, and considerations of layering a metal roof over your existing shingles.

Can You Put Metal Roof On Top Of Shingles

Understanding the Concept

Layering a metal roof over existing shingles is a common practice, but it’s not suitable for every situation. Here’s what you need to know:

1. Suitable Conditions

The option to add this roof is typically ideal when your current shingle roof is in relatively good condition. It provides an additional protective layer without the need for extensive removal.

2. Weight Considerations

Before layering a metal roof, it’s essential to consider the weight. Ensure that your existing roof structure can support the added weight of the metal roofing material. This is crucial to prevent structural issues.

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Advantages of Adding a Metal Roof Over Shingles

1. Cost-Effective

One of the significant advantages of installing this roof is cost savings. The process is typically less expensive than completely tearing off the old shingles, disposing of them, and then installing this roof.

2. Speedy Installation

Layering a metal roof over shingles often requires less time than a full tear-off and replacement. This means less disruption to your daily life during the installation process.

3. Energy Efficiency

Metal roofs, especially when properly insulated, can be energy-efficient, helping you save on heating and cooling costs. This is an attractive feature for many homeowners.

4. Durability and Longevity

Metal roofs are known for their durability and longevity. They can withstand harsh weather conditions, including heavy rain, hail, and high winds, making them a wise investment for the long term.

Considerations and Potential Issues

While layering a metal roof over shingles has its advantages, there are some considerations and potential issues to keep in mind:

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1. Moisture Trapping

If moisture gets trapped between the shingles and the metal roof, it can lead to mold, mildew, and even rot. Proper ventilation and insulation are crucial to prevent this issue.

2. Additional Weight

As mentioned earlier, the additional weight can be a concern. It’s essential to have a structural engineer assess your home’s capacity to support the combined weight of the shingles and the new metal roof.

3. Roof Inspection

Before proceeding, have a professional roofing contractor inspect your existing shingles. If there are any underlying issues, they should be addressed before adding the metal roof.


Adding a metal roof over existing shingles is a viable option for many homeowners, offering cost savings, speedier installation, and enhanced durability. However, it’s not suitable for every situation, and several considerations must be taken into account, including moisture management, weight capacity, and the condition of your current roof. Before making a decision, consult with a reputable roofing contractor to determine if this approach is right for your home. With the right planning and proper installation, you can enjoy the benefits of this roof for years to come.

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