Introduction to Metal Roofing Over Shingles
In the realm of roofing solutions, the transition from traditional asphalt shingles to metal roofing represents a significant upgrade in terms of durability, longevity, and overall performance. This article delves into the process and benefits of installing a metal roof over existing shingles, a method that not only enhances the roof's functionality but also offers a cost-effective alternative to complete roof replacement.
The Lightweight Advantage
Metal roofing, known for its surprisingly lightweight nature, is an ideal candidate for overlaying on existing asphalt shingles. This attribute simplifies the installation process and reduces structural stress on the building.
Cost Savings
Opting for a metal roof installation over existing shingles translates into substantial cost savings. It eliminates the need for labor-intensive and costly removal of the old shingle roof, making the metal roof a more financially viable option despite its higher initial cost compared to asphalt shingles.
Clean and Efficient Installation
Installing a metal roof over shingles is not only cost-effective but also minimizes the mess and disruption typically associated with roof replacement. This approach offers a cleaner, quicker, and more efficient roofing solution.
Enhanced Longevity and Durability
Metal roofs boast an impressive lifespan, often exceeding 50 years, far outlasting traditional asphalt shingles. Their resilience against elements like fire, rot, and insect damage, coupled with their ability to efficiently shed snow, positions them as a superior roofing choice.
Considerations and Challenges
Compliance with Building Codes
Before proceeding with a metal roof installation over shingles, it's crucial to ensure compliance with local building codes. Some regulations might mandate the removal of the old roof, which could impact the feasibility of this approach.
Weather-Related Concerns
While metal roofs are generally more durable, they can be susceptible to certain weather conditions, such as severe hail, which may cause denting. Selecting the right material and ensuring adequate insurance coverage is essential for long-term satisfaction.
The Need for Professional Installation
Unlike asphalt shingles, which some homeowners may feel comfortable installing themselves, metal roofing requires specialized skills for proper installation. It's advisable to engage a professional roofing company, like Empire Roofing and Exteriors located in Morehead KY, experienced in metal roofing installation.
Metal Roofing Materials
Copper Roofing
Copper roofing is renowned for its longevity, aesthetic appeal, and low melting point. Its softness contributes to a quieter roofing experience.
Aluminum Roofing
Aluminum stands out for its durability and resistance to saltwater damage, making it an excellent choice for coastal areas.
Zinc Roofing
Zinc roofing is celebrated for its extreme durability, corrosion resistance, and low melting point, offering a robust roofing solution.
Steel Roofing
Steel, available in galvanized, Galvalume, and weathering steel variants, is one of the most durable and long-lasting metal roofing materials.
Installation Process
Inspecting the Underlying Plywood
The first step involves inspecting the plywood beneath the shingles to ensure it's in good condition. Any signs of rot or corrosion must be addressed before proceeding with the metal roof installation.
Laying Synthetic Underlayment
Synthetic underlayment is preferred over traditional felt-type materials. It prevents damage from asphalt shingle granules and accommodates the metal roof's expansion and contraction.
Adding Insulation
Installing E-foil insulation atop the underlayment creates a protective barrier between the old asphalt roof and the new metal roof, enhancing energy efficiency.
Installing Corrugated Metal Panels
The final step is the installation of corrugated metal panels, ideally paired with E-foil insulation. This combination facilitates natural ventilation and air flow.
Conclusion
Opting for a metal roof installation over existing shingles offers a blend of durability, cost-effectiveness, and efficiency. While it's important to consider factors like building codes and weather-related vulnerabilities, the long-term benefits of a metal roof make it a compelling choice for homeowners seeking a robust, long-lasting roofing solution.
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