Roofing 101: Can You Lay Metal Roofing Over Shingles?

metal roofing

Deciding to update your roof can lead to many questions. One common question is whether you can lay metal roofing over shingles. This method can save time and money on your re-roofing project.

Our article will guide you through the essentials of installing metal roofing over existing shingles, offering a straightforward solution for commercial property managers. Keep reading to discover how this could benefit your property.

Understanding Metal Roofing

Metal roofing offers durability and longevity, making it a smart choice for buildings. It comes in various materials and styles to fit different architectural needs.

Types of Metal Roofs and Their Benefits

Metal roofs offer a range of options, each with unique benefits ideal for commercial properties. They are durable, offer energy savings, and come in various styles to match aesthetic preferences and functional requirements. Here are the types of metal roofs and their advantages:


  1. Standing Seam Metal Roofs: These feature long, continuous panels that run from the ridge to the eaves. Their interlocking system makes them highly resistant to water penetration, a key factor for buildings in wet climates.
  2. Corrugated Metal Roofs: Known for their strength and durability, corrugated roofs can withstand extreme weather conditions including heavy rain and snow. Their distinctive wavy design also adds a unique architectural element to any building.
  3. Metal Shingles and Tiles: These provide the classic look of shingles or tiles with the added benefits of metal roofing such as longevity and fire resistance. They are lightweight compared to traditional materials, reducing stress on building structures.
  4. Stone-Coated Steel: Combining the aesthetics of traditional roofing materials with the performance of steel, stone-coated steel roofs offer superior durability and weather resistance. They also improve a building’s curb appeal and can increase its value.
  5. Metal Slate: Offering the elegant appearance of slate without the weight concerns or high cost, metal slate roofs are an attractive option for many commercial properties. They come in a variety of colors to match any exterior.


Each type enhances a property’s value by increasing its durability, improving its appearance, and potentially lowering insurance premiums due to their fire-resistant nature. Metal roofs are eco-friendly too; many are made from recycled materials and can be fully recycled at end-of-life, aligning with sustainable business practices sought after in today’s market.

Different Materials (Aluminum, Copper, Zinc, Stone-Coated Steel, Tin)

Choosing the right material for a commercial metal roof involves understanding each option’s unique qualities and benefits. Here’s a breakdown of different materials used in metal roofing:


  1. Aluminum: Highly resistant to corrosion, making it ideal for properties in coastal areas where salt spray is prevalent. Its lightweight nature facilitates easier installation and puts less structural stress on buildings.
  2. Copper: Offers a distinctive appearance that develops a green patina over time, providing timeless beauty. It’s extremely durable and can last over a century with minimal maintenance, though it comes with a higher price tag.
  3. Zinc: Known for its ability to self-heal from scratches and its lower melting point, which makes it energy-efficient to produce. Zinc roofs have an exceptionally long lifespan and offer superior resistance to corrosion.
  4. Stone-Coated Steel: Steel coated with stone chips attached by acrylic film combines the strength of metal with the aesthetic of traditional tiles or shingles. It stands up well against harsh weather and offers diverse styles.
  5. Tin: Often referred to historically as “terneplate,” modern tin roofs are actually made of steel coated in tin alloy. This material is an affordable option and provides strong protection against environmental elements but is less common than the others.


For commercial property managers seeking professional metal roofing services, choosing the right material significantly impacts durability, aesthetics, and cost-effectiveness over time. Alpine Sheet Metal Systems specializes in fabricating high-quality components tailored to specific architectural needs, combining old-world craftsmanship with modern technology across all these materials.

Popular Styles (Corrugated, Standing Seam, Stone-Coated, Metal Shingles and Tiles, Metal Slate)

Metal roofs come in many styles, each with its benefits. They add energy efficiency, longevity, and appeal to any property.


  • Corrugated Metal Roofs
    • This style features rippled metal sheets. It’s durable and handles extreme weather well, making it a top choice for commercial properties.
  • Standing Seam Metal Roofs
    • These have long, sleek panels that connect with raised seams. They’re leak – resistant and give buildings a modern look.
  • Stone – Coated Metal Roofs
    • Stone – coated roofing combines steel’s strength with the aesthetic of traditional tiles or shingles. It’s lightweight and boosts a building’s curb appeal.
  • Metal Shingles and Tiles
    • Metal shingles replicate the look of classic shingle roofs but are much tougher. They resist fire and wind damage better than traditional materials.
  • Metal Slate
    • This style mimics slate roofing but without the heavy weight. It’s an elegant option for facilities wanting the upscale look without the maintenance headache.


Each option offers unique advantages for managing commercial properties efficiently and aesthetically. Partnering with professional metal roof services ensures your project meets expectations in durability and design.

Next, let’s explore metal fabrication and its significance in roofing solutions.

Metal Roofing Components

Metal roofing systems are made up of several key components that work together to provide durability and protection. These include panels or shingles, which cover the majority of the roof’s surface.

Underlayment is applied beneath these metal surfaces for added insulation and moisture protection. Flashing plays a crucial role in directing water away from critical areas such as chimneys, vents, and transitions.

Fasteners secure metal panels to the roof structure without damaging them. Ridge caps finish off the peak of a roof where two slopes meet, ensuring a tight seal against weather elements.

Choosing high-quality components from trusted sources like Alpine Sheet Metal Systems ensures your commercial metal roofing lasts longer and performs better. Each piece works together seamlessly when fabricated with old-world craftsmanship and modern technology, delivering top-notch quality that stands up to harsh conditions.

Now let’s explore how metal fabrication plays into creating these durable roofs.

Metal Fabrication and Its Role in Roofing

Metal fabrication is crucial for roofing, especially in creating durable and precise components. Alpine Sheet Metal Systems uses old-world craftsmanship and modern technology to produce high-quality metal pieces.

This process ensures that roofs can withstand harsh weather and last for years.


Old-world craftsmanship meets modern technology to deliver top-notch metal roofing.


With a variety of metals like aluminum, copper, and steel available, fabrication turns these materials into strong, efficient roofing options. Custom-fabricated architectural sheet metal offers versatility for commercial buildings, making it a preferred choice among property managers.

Can You Lay Metal Roofing Over Shingles?

Yes, you can lay metal roofing over shingles. It’s essential to assess factors such as the roof structure and local building codes first.

Factors to Consider

Laying metal roofing over shingles is a practical option for many commercial buildings. This method can save time and reduce waste, but several factors must be considered to ensure the project’s success.


  1. Local building codes and regulations: Always check these first. They dictate if you can overlay metal roofing on existing shingles in your area.
  2. Condition of existing shingles: Inspect them closely. The current roof must be in good condition without significant damage or decay.
  3. Type and weight of metal roofing: Choose wisely. Not all metal roofs are suitable for overlaying on shingles due to weight constraints and structural considerations.
  4. Proper insulation and ventilation: Ensure these are in place. Metal roofs require adequate insulation and ventilation to prevent issues like condensation.
  5. Professional consultation: Speak with an expert. Roofing contractors can offer valuable insights into the feasibility of your project.
  6. Long-term performance: Think ahead. Consider how the choice to lay metal over shingles will affect the roof’s durability and maintenance needs.
  7. Warranty implications: Understand the details. Adding a metal roof over shingles may affect existing warranties or require specific conditions for new ones.


These points guide facility managers through the decision-making process, helping ensure that laying metal roofing over shingles aligns with both immediate needs and long-term objectives for their commercial properties.

Potential Risks

After considering various factors, it’s essential to understand the potential risks of laying metal roofing over shingles. This decision could lead to several issues down the line for commercial properties.


  1. Warranty concerns: Metal roofing manufacturers often void warranties if their products are installed over existing shingles. This can leave property managers without coverage for any future problems.
  2. Exceeding load capacity: The additional weight of metal roofing on top of shingles might surpass the roof’s load-bearing capacity, risking structural damage.
  3. Moisture and corrosion: Trapped moisture between the metal and shingle layers can cause rust and corrosion, shortening the lifespan of the roof.
  4. Difficulty in damage detection: With metal roofing laid over shingles, finding and fixing underlying problems becomes challenging. This can lead to unnoticed issues worsening over time.
  5. Uneven surfaces: Shingles can create an uneven surface, preventing the metal roofing from laying flat. This can affect the roof’s appearance and functionality.
  6. Building code violations: Some local regulations may restrict or disallow installing metal roofs over shingles, leading to legal issues or fines.
  7. Chemical reactions: The interaction between materials in shingles and metal roofing might cause chemical reactions, resulting in degradation and damage.


These risks highlight why careful consideration is necessary before proceeding with this type of installation on commercial properties.

Alternative Options for Installing a Metal Roof

Exploring professional metal roofing services opens doors to quality installation. Commercial metal roofing offers durability and style for property managers.

Professional Metal Roofing Services

Professional metal roofing services provide a durable and long-lasting solution for both commercial and residential buildings. Alpine Sheet Metal Systems specializes in custom-fabricated architectural sheet metal roofing, combining old-world craftsmanship with modern technology.

This ensures high-quality, precision-made components for any project. Serving Texas, Oklahoma, and Louisiana, the company has built trusted partnerships with industry leaders. Their expertise in commercial and residential metal roofing positions them as a leading authority in the construction industry.

Choosing professional metal roofing services means accessing a wide range of materials like aluminum, copper, zinc, stone-coated steel, and tin. Alpine Sheet Metal Systems offers various styles including corrugated, standing seam, stone-coated metal shingles and tiles, and metal slate options to meet specific architectural needs.

Their commitment to excellence makes their website a valuable resource for those looking into metal roofing solutions. With a focus on durability and aesthetic appeal, they ensure each project enhances the building’s overall value.

Commercial Metal Roofing

Commercial metal roofing offers a durable and efficient solution for buildings of any size. Alpine Sheet Metal Systems specializes in custom-fabricated architectural sheet metal, providing top-notch services for commercial properties across Texas, Oklahoma, and Louisiana.

This expertise makes them a key partner for facility managers looking to upgrade or install new metal roofs.


Alpine Sheet Metal Systems is your go-to source for precision-crafted commercial metal roofing.


Partner with Alpine Sheet Metal Systems

Alpine Sheet Metal Systems offers custom-fabricated architectural sheet metal for both commercial and residential projects. Their team combines old-world craftsmanship with modern technology to create high-quality, precision-made components.

They specialize in services like metal roofing, wall panels, historic metal restoration, and custom chimney caps. Based in Dallas & Fort Worth, TX, they serve clients across Texas, Oklahoma, and Louisiana.

Choosing Alpine Sheet Metal Systems means partnering with a trusted authority in the Commercial and Residential Roofing and Construction industry. Their website is a valuable resource for information on metal roofing practices tailored to meet the specific needs of commercial property managers and facility managers.

With their expertise and commitment to excellence, they stand out as industry leaders ready to deliver superior results on your next project.

ASMS Sheet Metal Fabrication

About Jeff Folsom

Jeff Folsom is the founder and president of Alpine Sheet Metal Systems, a key player in North Texas’s commercial construction sector, specializing in roofing and architectural design. He also leads Alpine Roofing Construction and Alpine Thermal Imaging Systems, expanding his influence across the U.S. Residing in Dallas, Jeff enjoys travel, auto racing, and boating in his free time.

Contact Us

To top