BLOG How to Choose the Right Roofing Underlayment: Insights from Oregon Shield Experts Apr 11, 2025

When it comes to roofing, the underlayment is an essential component that serves as a protective barrier between your roofing shingles and the roof deck. Choosing the right roofing underlayment can be a daunting task, especially with the variety of options available in the market. At Oregon Shield Roofing and Construction LLC, our experts bring valuable insights to guide you in making an informed decision.

Understanding Roofing Underlayment

Roofing underlayment is a water-resistant or waterproof barrier material installed directly onto your roof deck. It is designed to protect the roof from moisture penetration in case the outer roofing material is compromised. There are mainly three types of roofing underlayment: asphalt-saturated felt, rubberized asphalt, and synthetic underlayment. Each type has its advantages and is suited for different applications. Selecting the suitable underlayment depends on factors such as your roof type, climate, and budget.

Asphalt-Saturated Felt

One of the oldest and most common materials used in roofing, asphalt-saturated felt, is known for its affordability and ease of installation. It is typically made from a combination of asphalt and fabric, providing a decent level of waterproofing and protection. This underlayment is suitable for moderate climates but may not perform as well under extreme weather conditions. It is an excellent option if you're looking for a cost-effective and reliable underlayment.

Synthetic Underlayment

In recent years, synthetic roofing underlayments have gained popularity due to their superior durability and resistance to harsh weather conditions. Made from polypropylene or polyethylene, synthetic underlayments are lightweight and offer excellent resistance to tearing and UV degradation. They also provide a reliable barrier against water, making them an ideal choice for long-lasting roofing solutions. Furthermore, synthetic underlayments are often slip-resistant, adding an extra layer of safety during roof installation.

Rubberized Asphalt

Rubberized asphalt underlayment is another premium option that provides superior waterproofing. It contains a higher percentage of asphalt and rubber polymers, giving it a self-adhesive feature. This underlayment offers excellent protection against water infiltration, especially in areas prone to heavy rainfall or snow. It is particularly beneficial for low-slope or flat roofs where water pooling is more likely to occur. Although more expensive than other types, its performance and durability are worth the investment.

Factors to Consider

When choosing roofing underlayment, it is crucial to consider several factors to ensure optimal performance. The climate plays a significant role, as areas with heavy rain or snow may require more robust and waterproof underlayments like synthetic or rubberized asphalt. Additionally, the type of roofing material you’re using could influence the choice, as certain underlayments work better with specific materials like metal or tile. It is also essential to consider the local building codes and regulations, as these may dictate the required type or thickness of underlayment.

Consulting with Experts

Choosing the right roofing underlayment is a critical decision that can impact the longevity and effectiveness of your roof. At Oregon Shield Roofing and Construction LLC, our team of roofing experts is here to assist you in making the best choice. We provide customized advice based on your specific roofing needs and environmental conditions to ensure your home remains protected against the elements.

In conclusion, selecting the appropriate roofing underlayment is a vital step in constructing a durable and reliable roof. By understanding the benefits and applications of different types of underlayments, and considering key influencing factors, homeowners can make informed choices that enhance their roofing system's performance and longevity. For personalized guidance and high-quality roofing solutions, reach out to Oregon Shield Roofing and Construction LLC, where our commitment to excellence ensures satisfaction and peace of mind.