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  • Adriana Ferreira

Unveiling the Best Roofing Underlayment: Synthetic vs. Felt

Selecting the right underlayment for your roof is a crucial step in ensuring longevity, durability, and peace of mind for homeowners. At A&M Roofing, we're deeply familiar with the various options available in the market.

Today, we aim to shed light on two primary contenders: Synthetic and Felt Roofing Underlayment. As leading Springfield roofing contractors, we've installed countless roofs and have firsthand experience with both types.

What is Roofing Underlayment?

Before diving into the differences, it's essential to understand the role of roofing underlayment. Acting as a protective barrier, the underlayment goes directly onto the roof deck, safeguarding it against moisture, heat, and other external elements before the shingles are placed on top.

Close up of a roof showing underlayment before shingle installation

Synthetic Roofing Underlayment: Benefits and Drawbacks

  • Durability and Strength: One of the top benefits of synthetic underlayment is its durability. It’s less likely to tear and can withstand harsh weather conditions, making it an ideal choice for a roof installation in Springfield, VA.

  • Lightweight: Being lighter than its felt counterpart, synthetic underlayment is often easier to install and handle, ensuring a faster installation process.

  • Water Resistance: High-quality synthetic options offer excellent water resistance, reducing the chances of mold and rot.

  • Cost: While synthetic underlayment may come with a steeper initial cost, its long-lasting nature often makes it a cost-effective solution in the long run.

  • UV Exposure: Some synthetic underlayments can be exposed to UV rays for extended periods without deteriorating.

However, like all materials, synthetic underlayment isn’t without its drawbacks. It can be slippery, especially when wet, which might pose challenges during installation.

Felt Roofing Underlayment: Advantages and Limitations

  • Natural Material: Traditionally, felt underlayment is made from natural materials like wood cellulose, making it an eco-friendly option.

  • Affordability: Felt tends to be more affordable up front, making it a go-to for many homeowners.

  • Flexibility: Due to its organic nature, felt underlayment can mold to the roof deck, providing a snug fit.

  • Protection: It offers adequate protection against resin bleed-through, which can occur with some wooden decks.

On the flip side, felt underlayment can absorb moisture, making it susceptible to wrinkling if exposed to wet conditions for prolonged periods.

Making The Right Choice for Your Home

Both synthetic and felt roofing underlayments have their merits. Your choice will hinge on your budget, your home's specific needs, and the advice of trusted Springfield roofing contractors.

At A&M Roofing, we've assisted numerous homeowners with both roof replacement and installation in Springfield and throughout Northern Virginia, and we're always here to guide you in making the best decision for your home.


Your roof is your home's first line of defense against external elements. Choosing the right underlayment is essential for the longevity of your roof and the safety of your home. Both synthetic and felt roofing underlayments come with their set of advantages and limitations.

Don't leave the safety and longevity of your roof to chance. Dive deeper into understanding the perfect underlayment solution tailored to your unique needs. Every decision today impacts your home's tomorrow. Ready to make the best choice? Contact A&M Roofing, a trusted and renowned roofing company in Springfield, VA, to get a free estimate, and let's elevate your home protection together!



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