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Can You Add a Metal Roof Over Shingles?

Feb 13, 2024
Michael Laguna

The trend of upgrading residential roofs with metal roofing has been gaining momentum, leading homeowners to ask a common question: Can you put a metal roof over shingles? In this blog post, we'll delve into the intricacies of this process, shedding light on the benefits, considerations, and overall feasibility of adding a metal roof over existing shingles. Besides, we’ll provide you with a suggestion for roof repair St Louis MO. With the increasing popularity of metal roofing, it's crucial to understand the ins and outs of this upgrade and get informed about the professional help you can use.


Understanding Metal Roofing

Metal roofing comes in various types and materials, such as aluminum, steel, and copper. Known for its durability and efficiency, it has become a preferred choice for many homeowners. The lightweight nature of metal, along with its resistance to adverse weather conditions, makes it a resilient option for residential properties. Whether it's standing seam, corrugated, or metal shingles, the versatility of metal roofing adds a modern touch to homes.


Benefits of Adding a Metal Roof Over Shingles

When considering adding a metal roof over shingles, several convincing advantages come into play. Enhanced durability, energy efficiency, and improved aesthetics are among the top benefits. The robust nature of metal provides better protection against the elements, potentially increasing the lifespan of the roof. Besides, installing a metal roof can contribute to improved energy efficiency, lowering utility bills. The sleek and contemporary appearance of metal roofing can also enhance the exterior aesthetics. This can potentially lead to the increased price of the property. 


How to Install a Metal Roof Over Shingles? Can It Be Done?

The process of installing a metal roof over shingles involves meticulous preparation, specialized installation techniques, and overcoming potential challenges. Now, let's delve into the step-by-step process of installing a metal roof over shingles. While this task requires precision and careful planning, it is indeed possible and can produce a durable and aesthetically pleasing result.


  1. Evaluate the Existing Roof: Before embarking on the installation journey, thoroughly inspect the current roof. Ensure that it is in good condition and capable of supporting the additional weight of the metal roofing material. Address any underlying issues or necessary repairs.
  2. Check Local Building Codes: Familiarize yourself with local building codes and regulations. Some areas may require obtaining permits for adding a metal roof over existing shingles. Consult with local authorities to ensure adherence and to secure the necessary permissions before commencing the project.
  3. Prepare the Surface: Clean the existing shingles to create a smooth and even surface. Remove any debris, dirt, or loose material. Repair or replace damaged shingles, ensuring a solid foundation for the metal roofing.
  4. Install Roofing Underlayment: Apply a high-quality roofing underlayment over the prepared shingle surface. This acts as an additional barrier against moisture and provides extra insulation. Choose an underlayment that complements the metal roofing material being used.
  5. Install Battens or Purlins: To create an air gap and ensure proper ventilation, install horizontal battens or purlins over the underlayment. This ensures that air can circulate beneath the metal roofing, preventing issues related to heat and moisture accumulation.
  6. Install Metal Roofing Panels: Begin installing the metal roofing panels according to the manufacturer's guidelines. Use appropriate fasteners designed for metal roofing. The specific installation technique may vary depending on the type of metal roofing, whether it's standing seam, corrugated, or metal shingles.
  7. Seal Seams and Joints: Pay special attention to sealing seams and joints to prevent water infiltration. Use recommended sealants or flashing materials to create a watertight barrier. Properly sealed seams are essential for the overall effectiveness and longevity of the metal roof.
  8. Address Penetrations and Edges: Take care when dealing with roof openings such as vents, chimneys, or skylights. Ensure proper flashing and sealing around these areas to maintain the roof's integrity. Pay attention to the edges of the roof, securing them with appropriate trim and flashing.
  9. Conduct a Final Inspection: Once the metal roof is installed, conduct a thorough final inspection. Check for any loose fasteners, improperly sealed areas, or other issues that may need attention. Address any concerns promptly to ensure the roof's performance and longevity.


Following these steps, you can install a metal roof over shingles. However, it's crucial to note that the installation process may vary based on the specific metal roofing system and local requirements. If you have any doubts or concerns, seeking professional assistance is always advisable.

Safety Precautions and Regulations

During the installation, prioritizing safety is paramount. Use proper equipment, adhere to safety guidelines, and follow regulatory requirements and building codes. By doing so, you not only ensure the well-being of those involved in the installation process but also meet legal obligations.

Maintenance and Longevity

Maintaining a metal roof over shingles is relatively straightforward. Regular inspections, cleaning, and prompt repairs when necessary can prolong its lifespan. Metal roofing typically boasts impressive longevity, often outlasting traditional roofing materials. Comparing the longevity of metal roofing to conventional options like asphalt shingles or wood can help homeowners make an informed decision.

Cost Considerations

Before committing to the project, it's essential to understand the cost factors involved. Consider the materials, labor, and potential savings, weighing them against the expected benefits. While the initial investment may be higher, the long-term cost-effectiveness and return on investment make installing a metal roof over shingles a worthwhile consideration.

Make an Informed Decision by Contacting Florida Fire & Flood

Adding a metal roof over shingles is a viable option with numerous benefits. Roof repair in St. Louis, MO may involve considering this upgrade for enhanced durability and energy efficiency. However, it's crucial to weigh the pros and cons carefully. Consulting with roofing professionals and adhering to local regulations will help homeowners make an informed decision about their roofing needs. If you're curious about roofer expertise and metal roofing, feel free to ask the professionals who can guide you through the process. Our experienced team at Lagunas Roofing is available 24/7. Call us at (618) 300-5661 or submit a contact form on our website for a free consultation!

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