Easy Guide: Install Steel Roofing Over Shingles
Many Americans believe that replacing their existing asphalt shingles is the only way to install a metal roof, resulting in significant additional costs. However, that couldn’t be further from the truth. It is entirely possible to install a steel roof directly over shingles, saving you time, money, and unnecessary hassle.
Key Takeaways:
- Installing a steel roof over shingles provides cost savings and avoids the mess of shingle removal.
- Steel roofing is lightweight, durable, and has a longer lifespan compared to asphalt shingles.
- Check local building codes before starting the installation.
- Consider hiring a professional for a safe and efficient installation.
- Choose from a variety of steel roofing materials to suit your needs and preferences.
Benefits of Installing a Metal Roof Over Shingles
Installing a metal roof over shingles provides numerous benefits that make it an attractive option for homeowners. One of the main advantages is the lightweight nature of metal roofing, which makes it easy to install directly over existing shingles. This eliminates the need for time-consuming and messy shingle removal, resulting in significant cost savings.
Moreover, metal roofing is renowned for its exceptional longevity and durability. Some metal roofs can last for over 60 years, outperforming traditional asphalt shingles by a wide margin. This longevity translates to long-term cost savings, as homeowners can avoid the expense of frequent roof replacements.
Another advantage of metal roofs is their superior resistance to fire, rot, and insect damage. Unlike asphalt shingles, which can become a potential fire hazard, metal roofs provide an added layer of safety and protection for your home.
Furthermore, metal roofs are highly energy-efficient. They reflect sunlight, preventing excess heat from being absorbed into the home. This reduces the need for excessive air conditioning, resulting in lower energy bills and a greener, more eco-friendly household.
Overall, installing a metal roof over shingles offers a multitude of benefits, including lightweight installation, cost savings, increased longevity, and enhanced durability. With its numerous advantages, metal roofing proves to be a wise investment that provides long-term protection and peace of mind for homeowners.
Drawbacks of Installing a Metal Roof Over Shingles
While there are many benefits to installing a metal roof over shingles, it’s important to be aware of the potential drawbacks. Here are a few factors to consider before proceeding with this type of installation:
- Building code restrictions: Before starting any roofing project, it’s crucial to check local building codes and regulations. Some areas may have restrictions or guidelines that prevent the installation of metal roofing over shingles. Compliance with these regulations ensures the safety and integrity of your roof.
- Hail damage: Metal roofs can be susceptible to hail damage. Depending on your location, hail storms may occur frequently or sporadically. It’s essential to assess the risk of hail damage and consider the potential impact on your metal roof. Additionally, ensure that your homeowner’s insurance covers hail damage for added protection.
- Professional installation required: Installing a metal roof over shingles requires specialized skills and knowledge. While it may be tempting to undertake the installation as a DIY project, it’s recommended to hire a professional contractor with experience in metal roofing. Professional installation ensures proper techniques, adherence to building codes, and a high-quality, long-lasting roof.
By considering these drawbacks and seeking professional advice, you can make an informed decision about installing a metal roof over shingles. Understanding the potential challenges allows you to plan accordingly and ensure the longevity and durability of your roof.
What Kind of Metal Roof Can Be Used?
When it comes to installing a metal roof over shingles, there are several types of metal roofing materials to choose from. Each type offers its own unique benefits and characteristics that can enhance the durability and aesthetic appeal of your home.
Copper Roofing
Copper is a popular choice for metal roofing due to its distinct appearance and impressive longevity. Copper roofs are known for their beautiful natural patina that develops over time, giving your home a timeless and elegant look. Additionally, copper has a low melting point, making it an excellent choice for areas with high temperatures or frequent thunderstorms.
Aluminum Roofing
Aluminum is another commonly used metal roofing material. It offers excellent resistance to corrosion and is particularly suitable for homes located in coastal areas or regions with high humidity. Aluminum roofs are also lightweight and easy to install, making them a convenient choice for DIY enthusiasts.
Zinc Roofing
Zinc is a durable and long-lasting material that is highly resistant to corrosion. A zinc roof can withstand harsh weather conditions and is known for its self-healing properties, meaning it can repair itself over time. This makes zinc roofing a low-maintenance option for homeowners looking to invest in a roof that will stand the test of time.
Steel Roofing
Steel is a versatile and affordable metal roofing option. It offers exceptional durability and can withstand extreme weather conditions, making it an excellent choice for areas prone to hurricanes, hailstorms, or heavy snowfall. Steel roofs are available in a variety of styles, finishes, and colors, allowing homeowners to find the perfect match for their home’s aesthetic.
Ultimately, the choice of metal roofing material depends on your specific needs, budget, and personal preferences. Whether you opt for the timeless beauty of copper, the corrosion resistance of aluminum, the self-healing properties of zinc, or the durability of steel, installing a metal roof over shingles can provide long-term protection for your home.
Steps to Installing a Metal Roof Over Shingles
When installing a metal roof over shingles, there are several important steps to follow to ensure a successful and durable installation. By carefully inspecting the plywood, installing synthetic underlayment, adding insulation, installing corrugated metal panels, and properly securing closure strips and flashing, you can create a strong and watertight metal roof.
1. Inspect Plywood
Before beginning the installation, it is crucial to thoroughly inspect the plywood underneath the shingles. Make sure that the plywood is in good condition, free of rot, and capable of supporting the weight of the metal roof. Any damaged plywood should be replaced or repaired before proceeding.
2. Install Synthetic Underlayment
Next, install a synthetic underlayment over the plywood. The underlayment acts as a protective barrier, preventing water intrusion and ensuring the longevity of the metal roof. Secure the underlayment according to the manufacturer’s instructions, making sure to cover the entire roof surface.
3. Add Insulation
Improving energy efficiency is an important consideration when installing a metal roof over shingles. To enhance insulation, add a layer of insulation material between the underlayment and the metal panels. This step will help regulate temperature and reduce heat transfer, resulting in energy savings and a more comfortable living space.
4. Install Corrugated Metal Panels
Now it’s time to install the corrugated metal panels. Begin at one end of the roof and work your way across, ensuring that the panels are properly aligned and the seams are even. Use appropriate fasteners, such as screws designed for metal roofs, to secure the panels to the plywood and prevent them from shifting or lifting in strong winds.
5. Secure Closure Strips and Flashing
To seal the gaps between the metal panels and prevent water penetration, install closure strips along the edges, ridges, and valleys of the roof. Closure strips create a watertight barrier and help maintain the structural integrity of the roof. Additionally, install flashing around chimneys, vents, and other roof protrusions to provide extra protection against water intrusion.
By following these steps and ensuring each component is properly installed, you can achieve a secure and long-lasting metal roof over your existing shingles. Remember to consult the manufacturer’s instructions and local building codes to ensure compliance and safety throughout the installation process.
| Materials | Tools |
|---|---|
| – Metal panels | – Tape measure |
| – Synthetic underlayment | – Utility knife |
| – Insulation material | – Screw gun |
| – Closure strips | – Drill |
| – Flashing | – Metal snips |
| – Fasteners | – Safety equipment (gloves, goggles, etc.) |
Professional Installation and Considerations
While it is possible to undertake a DIY installation of a metal roof over shingles, we highly recommend hiring a professional contractor with experience in metal roofing installation. The process of installing a metal roof requires specialized skills and can be potentially dangerous. With a professional contractor, you can ensure a seamless and secure installation, giving you peace of mind and avoiding any potential risks.
It is crucial for homeowners to be aware of local building codes and regulations before proceeding with a full roof installation. Permits may be required, and it is essential to adhere to these legal requirements. Consulting with a professional contractor can help you navigate these regulations and make sure that your project is compliant with all necessary permits and codes.
Considering cost is also an important aspect when planning a metal roof installation. While metal roofing can be more expensive upfront compared to other options, it offers significant long-term cost savings. Metal roofs are durable, requiring minimal maintenance and repairs over their lifetime. They also have excellent energy efficiency, reducing your heating and cooling costs. Thus, despite the higher initial investment, a metal roof can provide considerable financial benefits in the long run.
