Is It Possible to Install a Metal Roof Over Shingles?

Are you considering a roof replacement in Boston but wondering if you can simply install a metal roof over shingles? It’s a common question among homeowners looking to upgrade their roofs without the hassle of removing the existing shingles. In this blog post, we’ll delve into the feasibility of installing a metal roof over shingles, the best practices for doing so, potential problems you may encounter, and whether it’s a DIY-friendly project. Plus, if you are looking for a company dealing with roof replacement Boston, we have a recommendation for you to check by the end of the post.

Can You Put a Metal Roof Over Shingles?

The short answer is yes, you can install a metal roof over shingles in many cases. However, there are some important factors to consider before moving on with that task. First of all, it’s important to assess the condition of your existing shingles. If they are in good shape with no signs of significant damage or rot, installing a metal roof over them can be a viable option. In addition, the type of metal roofing system you choose and local building codes may affect whether this method is allowed.

Materials and Tools Needed for Installing Metal Roof Over Shingles 

Before beginning the installation process, the following materials and tools need to be gathered:


  • Metal roofing panels: Choosing high-quality metal panels that are suitable for specific climates and aesthetic preferences is done for obvious reasons.
  • Underlayment: Selecting an appropriate underlayment material, such as roofing felt or synthetic membranes, is advisable to provide an extra layer of protection against moisture.
  • Battens: These strips, made of wood or metal, are used to create a framework for attaching the metal roofing panels.
  • Fasteners: Screws or nails specifically designed for metal roofing are used to secure the panels and battens in place.
  • Closure strips: These flexible strips are to be installed along the edges and ridges of the roof to seal gaps and prevent water seepage.
  • Flashing: Obtaining flashing material is a good idea to create watertight seals around chimneys, vents, and other openings.


  • Tape measure: A tape measure is important for ensuring proper panel alignment and overlap.
  • Hammer or screw gun: A hammer or screw gun is used to fasten the battens and metal panels securely in place.
  • Utility knife: This knife is used to cut the underlayment and closure strips to the required dimensions.
  • Chalk line: A chalk line is used to mark guidelines for positioning battens and panels.
  • Roofing snips: These specialized scissors are designed for cutting metal roofing panels to size.
  • Safety equipment: Safety is ensured by wearing gloves, safety glasses, and appropriate footwear when working at heights.

How to Install a Metal Roof Over Shingles: The Best Way

Proper installation is key to ensuring the longevity and effectiveness of a metal roof over shingles. Here’s a basic overview of the recommended steps:

  1.       Nail or Screw the Underlayment and Battens into the Shingles

Start by installing an underlayment over the shingles to provide an additional layer of protection against moisture. Then, attach battens (wood or metal strips) at right angles to the roof rafters, making sure they are firmly secured.

  1.       Lay Out Metal Panels and Secure Them to the Battens

Carefully position the metal roofing panels over the battens, making sure they overlap correctly according to the manufacturer’s instructions. Use appropriate fasteners to secure the panels in place, typically screws or nails designed for metal roofing.

  1.       Install Closure Strips Over the Gaps and Add the Flashing

To prevent water seepage and ensure a watertight seal, install closure strips along the edges and ridges of the roof where panels meet. Besides, flashing should be installed around chimneys, vents, and other protrusions to redirect water away from vulnerable areas.

  1. Inspect and Seal any Potential Leaks

After completing the installation process, carefully inspect the entire roof for any potential leaks or areas of concern. Seal any gaps or openings with appropriate roofing sealant to further improve the waterproofing of your metal roof over shingles.

DIY vs Professional Installation 

If you are wondering Can I Install Metal Roofing Over Shingles By Myself?, take a look at several considerations here. While some of you may be tempted to tackle this project on your own, there are some potential challenges and safety risks involved. Installing a metal roof over shingles requires precise measurements, proper tools, and knowledge of roofing techniques. Apart from that, working at heights can be dangerous. Before undertaking this task, you should take these into account and question your confidence when it comes to tackling the installation. In general, hiring a professional roofer is advisable to ensure the job is done correctly and safely. However, before hiring a professional, make sure to check the information about roofers to understand the scope of their work. 

Metal Roof Over Shingles Problems

While installing a metal roof over shingles can offer benefits, including durability and energy efficiency, there are potential issues to be aware of. These may include:

  • Added Weight: Metal roofing systems are typically heavier than shingles, so the additional weight can strain the structure underneath if not properly planned for.
  • Ventilation Concerns: Improper ventilation beneath the metal roof can lead to moisture buildup and potential issues such as mold or rot.
  • Voided Warranties: Some metal roofing manufacturers may void warranties if the product is installed over shingles, so be sure to check warranty terms before moving on with the task.

Reach Out to HausEx Home Solutions for Your Roof Concerns

If you’re considering this option for your roof replacement in Boston, consulting with a skilled and experienced roofer can help ensure a successful outcome. For more information about roofer services, feel free to reach out to our team at HausEx Home Solutions. Our expert team is available 24/7 to answer all your questions and ensure that you make informed decisions. You can call us anytime at  (508) 928-3932 or fill out the contact form on our website for a free quote! 


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