When you invest in a new metal roof, especially with options available from Metal Roofing Dayton, you are focused on the durable, beautiful metal panels that will protect your home for decades. However, what lies beneath those panels is just as important. The roof underlayment is a crucial component of your complete roofing system. It provides a vital secondary layer of protection against moisture and the elements. This guide will explain the two main types of underlayment, including felt and synthetic, to help you make the best choice for your Dayton, OH home.
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At Metal Roofing Dayton, we are your local Dayton, OH, experts dedicated to providing the highest quality high temp metal roofing solutions. We believe in protecting your home with a system built to last, which is why we focus on #1 quality craftsmanship and the best materials available.
Our commitment extends beyond the products we use, including stick underlayment. We prioritize your satisfaction, offering fair pricing, the industry’s best financing options, and a no-high-pressure sales approach. We are here to help you make an informed decision for your home.
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Your trust is our priority as we provide metal roofing services, including 24-hour emergency roof repair services. Our reputation is built on lasting relationships and putting your needs first. Our certificates include CertainTeed Shingle Master Contractor, an A+ BBB rating, and Owens Corning Preferred Contractor. Contact us for a free quote and see why Dayton trusts Metal Roofing Dayton. Let’s make your home safer, more beautiful, and more valuable!
Craftsmanship, Material Quality, and Customer-Centric Approach
A great roof begins with quality materials and proper coverings. At Metal Roofing Dayton, we use only premium products from top manufacturers for lasting performance. Our team guides you through every choice, including underlayment selection, explains material benefits, and delivers flawless installation. We prioritize transparency and education to ensure your satisfaction, empowering you to make the best investment decisions. Trust us for superior craftsmanship and protection for your home.
Why Underlayment Is Important for Metal Roofs
You might think of roofing underlayment as just another sheet of material, but it’s an essential part of your home’s defense system. This water-resistant layer is installed directly onto your roof deck, which includes roof sheathing, before the metal panels go on, acting as a critical secondary barrier against the elements.
For a long-lasting material like metal, the right roofing underlayment with specific installation instructions is not just recommended—it’s necessary. It ensures the longevity of your entire roof system by providing a final layer of protection against moisture, wind, and ice. We will now look at how it protects your home and helps meet important standards.
Moisture, Weather, and Longevity
A robust roofing system uses effective underlayment to protect against moisture and structural damage. High-quality synthetic underlayment adds protection, boosts metal roof longevity, and resists water and UV exposure.
Weather resistance is vital; materials should withstand high winds and extreme temperatures. Advanced synthetic options offer better fire resistance and durability than traditional felt. Homeowners should choose materials that meet building codes and ensure long-term, reliable performance.
Felt vs. Synthetic Underlayment: Key Differences Explained
Now that you understand why underlayment is so important, let’s compare the two main types of underlayment available: felt and synthetic. For decades, asphalt-soaked felt was the standard roofing accessory material used by contractors. However, newer innovations have led to the rise of synthetic underlayment, which has quickly gained popularity for its superior performance.
Each type has distinct properties, advantages, and drawbacks. Understanding these differences is key to selecting the right underlayment to pair with your durable new metal roof.
What Is Felt Underlayment for Metal Roofs?
Felt underlayment, also known as tar paper or roofing felt, is a traditional roof protection made from wood cellulose saturated with asphalt. It’s available in #15 and #30 weights, with #30 being thicker and more durable. While affordable and widely used in various roofing types, its organic base degrades over time, especially under long-lasting roofs like metal. Asphalt is also highly flammable, making safety a concern compared to modern alternatives. Weigh the pros and cons of felt underlayment before choosing it for metal roofing.
What Is Synthetic Underlayment for Metal Roofs?
Synthetic underlayment is a modern roofing material made from woven polyethylene or polypropylene, offering superior durability and water resistance compared to traditional felt. Being completely inorganic, it resists moisture and mold. It is highly tear-resistant, withstands prolonged UV exposure, and remains stable at high temperatures—ideal for metal roofs, providing better protection. While its upfront cost is higher, its longevity and performance make it a smart investment for permanent roofing systems.
Felt Underlayment
While synthetic options are often recommended, felt underlayment still has a place in the market. As one of the original types of underlayment, this asphalt underlayment is known for its affordability and widespread availability at home depot. However, its limitations are significant, especially when used under a metal roof designed to last 50 years or more.
It is crucial to weigh the immediate cost savings of felt against its long-term performance and durability, especially when considering synthetic underlayment products. Let’s explore the specific benefits and drawbacks to help you understand where this roofing material might be suitable.
Benefits of Felt Underlayment
Felt underlayment is a reliable choice for metal roofs, especially for roofs that have low slopes, offering strong protection against water and high temperatures. Made from natural fibers and asphalt, it prevents moisture from reaching the roofing structure, helping extend the life of metal panels.
Lightweight and easy to handle, felt underlayment makes installation simpler and safer by providing better traction. It also meets building code requirements, ensuring effective roof protection and compliance.
Limitations and Considerations of Felt Underlayment
Despite its popularity, felt underlayment has notable drawbacks. It absorbs moisture, leading to water penetration and compromising its protective barrier. It is also highly flammable, especially under metal roofing in high temperatures. Its lifespan is shorter than synthetic options due to UV deterioration, requiring more frequent replacement and increasing costs. This can be particularly concerning when using asphalt shingles. Proper installation is crucial, as errors can worsen these issues. Weighing these factors against the benefits is essential for a successful roof installation.
Synthetic Underlayment for Metal Roofing
Synthetic underlayment has become the preferred choice in the roofing industry for use with metal roofing, and for good reason. This engineered product offers superior durability, water resistance, and longevity that matches the lifespan of quality products like metal panels. It is designed to perform in conditions where traditional felt falls short.
As a newer product, synthetic roofing underlayment comes in several variations of roofing products to suit different needs and budgets. We will explore the popular types of underlayment available, as well as their key advantages and potential drawbacks.
Types of Synthetic Underlayment
Several synthetic underlayment options are available for metal roofs and shingle roofing, offering enhanced durability and performance. Polyethylene plastic underlayment provides a strong, lightweight moisture barrier. Popular brands like Sharkskin Ultra and Sharkskin Comp deliver excellent water resistance and UV protection for high-exposure areas. Adhesive underlayments stick directly to the roof deck, simplifying installation and minimizing water intrusion. These products meet building codes and help ensure long-lasting, reliable roof protection.
Advantages and Drawbacks of Synthetic Underlayment
Synthetic underlayment offers superior water resistance, durability, and longevity compared to traditional felt. Made from advanced materials like polyethylene, it also provides excellent fire resistance and better traction during installation, typically covering more square feet than traditional felt options. However, synthetic options can be more expensive upfront and may be prone to UV degradation. Proper installation is crucial to maximize benefits and ensure compliance with building codes.
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Choosing the right underlayment, such as felt paper, is key to your metal roof’s durability and protection. Felt offers affordability and reliability, while synthetic options provide better moisture resistance and longer life. At Metal Roofing Dayton, we use top-quality materials and craftsmanship, backed by our CertainTeed Shingle Master Contractor, A+ BBB rating, Owens Corning Preferred Contractor. Contact us for expert guidance or to explore your roofing options.
Read our blog: Choosing the Right Underlayment for Your Metal Roof in a Midwest Climate
Frequently Asked Questions
Is synthetic underlayment more durable than felt for metal roofs?
Synthetic underlayment is far more durable. It is made from tear-resistant polymers that won’t absorb moisture, crack under heat, or degrade from UV exposure like felt underlayment does. Its durability is designed to match the long lifespan of a metal system, making it the superior choice during the installation process.
Does climate affect which underlayment is best for a metal roof?
Yes, climate is a major factor. The hot summers and cold, icy winters in Dayton, OH make synthetic underlayment, a form of water shield underlayment, the better choice. It withstands high temperatures under metal panels without drying out and provides a superior barrier against ice dams and wind-driven rain compared to traditional felt underlayment.