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Can You Put a Metal Roof Over Shingles?

Jon Starry

Understanding the Basics of Metal Roofing Over Shingles

In the world of roofing, innovation and durability are key. As homeowners seek long-lasting solutions, installing a metal roof over existing shingles has gained popularity. This comprehensive article is designed to inform and guide you through the process, ensuring a wise investment in your home’s future.

Why Choose Metal Roofing?

Metal roofing is a premier choice for homeowners due to its longevity, energy efficiency, and minimal maintenance requirements. It is a testament to resilience, often lasting over 50 years with proper installation and care. Reflective properties contribute to energy savings by deflecting heat, making it an environmentally friendly and cost-effective option.

The Viability of Layering Over Shingles

Placing a new metal roof directly over old shingles is an attractive option for many. This method eliminates the need for a complete tear-off, reducing labor and disposal costs. However, it’s crucial to assess the condition of the existing shingles. They should be flat and free of major defects to provide a solid foundation for the metal roof.

Can You Install Metal Roofing Over Shingles?

In simple scenarios, the answer is yes – you can place metal panels atop your existing asphalt shingles as a lower-budget roof replacement solution.

While the asphalt shingle roof may be the most popular system across American homes, many homeowners are shifting toward more durable and weather-resistant materials like metal for optimal longevity. 

To install a metal roof on top of your existing shingles, you must meet the following conditions:

  • Your asphalt roof should be at the end of its lifespan.
  • The shingles should be relatively flat without major lifts, cracks, bumps, or blisters.
  • Your roof shouldn’t have any water damage or leaks.
  • The roof deck should be intact. 

We recommend selecting a roofing contractor with metal installation knowledge if you meet the above criteria. At Steadfast Roofing, as a roofing company with years of experience installing metal roofs, we still recommend a full tear-off of the existing roof system as without getting down to the deck of a roof, any existing issues with wood rot will go unaddressed, and the use of a high-temp underlayment meant for metal roof installs cannot be utilized.  

Metal Roofing Tampa FL

Preparing for a Metal Roof Installation

Initial Inspection and Assessment

Before proceeding, a thorough inspection by qualified roofing contractors in Tampa, FL, is essential. They will evaluate the condition of the current shingles the structure’s integrity, and identify any areas needing repair or reinforcement. Steadfast Roofing, a trusted name in the industry, can provide this professional assessment, ensuring a solid base for your new roof.

Choosing the Right Materials

Selecting the correct type of metal roofing is vital. Options range from corrugated panels to standing seam designs, each with advantages. Color and finish choices also play a role in the aesthetic and functional performance of the roof. High-quality materials, like Steadfast Roofing, are a hallmark of leading roofing companies in Tampa, FL.

Installation Process

Underlayment Application

Before the metal panels arrive, an underlayment should be laid over the existing shingles. This layer serves as added insulation and a moisture barrier, protecting your home from potential leaks and condensation issues.

Installing the Metal Panels

Precision is key during this stage. Each panel must be aligned correctly and secured with appropriate fasteners. Overlapping panels should be sealed to prevent water infiltration. This meticulous process is where professionals from a reputable roofing company in Tampa, FL, make all the difference.

Finishing Touches

Trim, flashing, and venting are essential components that require careful attention. These elements ensure the roof’s edges are sealed, and the attic space is adequately ventilated, preventing moisture buildup and promoting energy efficiency.

Post-Installation Care and Maintenance

Routine Inspections

Regular inspections are crucial to maintaining the integrity of your metal roof. Even though it’s low maintenance, keeping an eye on potential issues like loosening screws or sealant failures can prevent bigger problems down the line.

Cleaning and Maintenance

Keeping the roof clean from debris and ensuring clear gutters is part of ongoing maintenance. While metal roofs are resilient, they still benefit from periodic checks, especially after severe weather events.

Conclusion: A Wise Investment for Your Home

Investing in a metal roof over existing shingles is a decision that offers long-term benefits. It’s a sustainable, durable, and aesthetically pleasing choice. With the expertise of Steadfast Roofing and the careful selection of materials and professionals, your home in Tampa, FL, will be well-protected and beautiful for years to come.

In choosing this path, you’re ensuring a robust roof over your head and enhancing your home’s value and appeal. Steadfast Roofing is here to guide you every step of the way, ensuring your roofing project is a resounding success.


Roofing License# CCC1334242