Can You Put A Metal Roof Over Wood Shingles?

Looking to upgrade your roof but not sure if you can put a metal roof over wood shingles? Well, you’ve come to the right place! In this article, we will explore the possibility of installing a metal roof over existing wood shingles. From cost-effectiveness to structural considerations, we’ll cover all the key factors to help you make an informed decision. So, let’s get started and find out if it’s a feasible option for your home!

Can You Put A Metal Roof Over Wood Shingles?

Can You Put A Metal Roof Over Wood Shingles?

Overview of Metal Roofing on Wood Shingles

If you have an existing roof made of wood shingles and you’re considering upgrading to a metal roof, you might be wondering, can you put a metal roof over wood shingles? The answer is generally yes, but there are a few important considerations to keep in mind. In this article, we will explore the benefits of installing a metal roof over wood shingles, as well as the necessary steps and precautions to take for a successful installation. We will also provide maintenance tips to ensure the longevity of your metal roof.

Benefits of Installing a Metal Roof over Wood Shingles

There are several key benefits to installing a metal roof over wood shingles. Firstly, a metal roof can offer improved durability and longevity compared to traditional wood shingles. Metal roofs are known for their resistance to extreme weather conditions including heavy rain, strong winds, and even hail. This can provide you with peace of mind knowing that your roof will provide excellent protection for your home.

Metal roofs are also highly energy-efficient, helping you save on heating and cooling costs. The reflective properties of metal can help to reduce heat absorption, keeping your home cooler in the summer. Additionally, metal roofs are environmentally friendly as they are often made from recycled materials and can be recycled again at the end of their lifespan.

Another advantage of choosing a metal roof over wood shingles is the aesthetic appeal. Metal roofs come in a wide range of styles, colors, and finishes, allowing you to choose a look that complements the architectural style of your home. Whether you prefer the sleek modern look or a more traditional appearance, there is a metal roof option that will suit your preferences.

Can You Put A Metal Roof Over Wood Shingles?

Considerations before Installing a Metal Roof over Wood Shingles

Before proceeding with the installation of a metal roof over wood shingles, there are a few important considerations to take into account. Firstly, it is crucial to assess the structural integrity of the existing roof. Metal roofs are heavier than wood shingles, so it is essential to ensure that the underlying structure is capable of supporting the additional weight.

Another consideration is the building codes and regulations in your area. It is important to check with your local building authority to determine if there are any restrictions or requirements for installing a metal roof over wood shingles. Some areas may require a permit or inspection to ensure the installation meets safety standards.

Additionally, keep in mind that installing a metal roof over wood shingles may affect the warranty on both the metal roof and the wood shingles. It is advisable to consult with the manufacturers or a professional roofing contractor to understand the implications on any existing warranties.

Preparing the Wood Shingles for Metal Roof Installation

Before installing a metal roof over wood shingles, it is crucial to properly prepare the existing roof surface. This preparation will ensure a smooth and successful installation. Here are the steps to follow:

  1. Clean the roof: Remove any debris, moss, or dirt from the wood shingles using a broom or a pressure washer. Clean surfaces allow for better adhesion and help prevent potential issues in the future.

  2. Inspect for damage: Carefully inspect the wood shingles for any signs of damage, rot, or decay. Replace any damaged shingles before proceeding with the installation. It is essential to have a solid substrate for the metal roof.

  3. Check for loose shingles: Secure any loose or curling shingles to prevent them from causing issues once the metal roof is installed. Use roofing nails or adhesive as necessary.

  4. Smooth out uneven areas: If there are any uneven areas on the roof surface, consider using a leveling compound to create a flat and even base for the metal roof.

Can You Put A Metal Roof Over Wood Shingles?

Installation Steps for Putting a Metal Roof over Wood Shingles

Once the wood shingles are properly prepared, you can proceed with the installation of the metal roof. Here is a step-by-step guide to help you through the process:

Determining the Structural Integrity of the Existing Roof

Before installing the metal roof, it is crucial to gauge the structural integrity of the wood shingle roof. Engage the services of a professional to assess whether the underlying structure can support the additional weight of the metal roof.

Removing Damaged or Rotten Wood Shingles

Inspect the wood shingles for any signs of damage, rot, or decay. Any damaged or rotten shingles must be replaced to ensure a solid foundation for the metal roof. Remove the damaged shingles carefully, making sure not to cause further damage to the roof structure.

Checking for Potential Moisture Trapped in the Roof

Moisture trapped in the existing roof can lead to mold, mildew, and other issues. It is essential to check for any signs of moisture and address them before installing the metal roof. This can be done by thoroughly inspecting the underlying wood structure for any signs of water damage, as well as checking for leaks or signs of moisture in the attic space.

Installing the Necessary Underlayment and Additional Insulation

To provide further protection and insulation, it is recommended to install an underlayment between the wood shingles and the metal roof panels. This underlayment acts as a waterproof barrier and helps to prevent any potential water infiltration. In addition, you may consider adding extra insulation to improve energy efficiency and soundproofing.

Fastening the Metal Roof Panels over Wood Shingles

Once the necessary preparations have been completed, it is time to install the metal roof panels. Follow the manufacturer’s instructions for the specific type of metal roof you have chosen. Generally, the panels are fastened using screws or nails, ensuring they are securely attached to the wood shingles. Take care to position the panels correctly and to leave the appropriate spacing for expansion and contraction.

Applying Weatherproof Seals and Finishing Touches

To ensure a watertight seal and protect against leaks, it is crucial to apply weatherproof seals to all joints, edges, and penetrations on the metal roof. This step helps to prevent water from seeping into the underlying wood shingles and causing damage. Additionally, consider adding flashing around chimneys, skylights, and other roof penetrations for added protection.

Maintenance Tips for a Metal Roof Installed over Wood Shingles

To keep your metal roof in optimal condition and maximize its lifespan, regular maintenance is essential. Here are some maintenance tips to follow:

  • Inspect the roof annually: Regularly inspect your metal roof for any signs of damage, loose screws, or potential issues. Address any problems promptly to prevent further damage.

  • Clear debris: Remove any leaves, branches, or debris from the roof surface, gutters, and downspouts to prevent clogging and water backup.

  • Clean as needed: Depending on your location and environmental factors, you may need to clean your metal roof periodically. Use a gentle detergent, soft brush, and low-pressure water to avoid damaging the surface.

  • Trim overhanging branches: Trim any tree branches that hang over your roof to prevent possible damage from falling branches and excessive debris accumulation.

Can You Put A Metal Roof Over Wood Shingles?


In conclusion, it is possible to install a metal roof over wood shingles with proper preparation and installation techniques. By doing so, you can enjoy the benefits of increased durability, energy efficiency, and aesthetic appeal. However, it is important to consider the structural integrity of the existing roof, adhere to local regulations, and properly prepare the wood shingles before installation. With regular maintenance and care, your metal roof installed over wood shingles can provide long-lasting protection for your home.

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