When it comes to roofing, one crucial component that often goes unnoticed is the underlayment. The underlayment is a protective layer installed beneath the roofing material, providing an extra barrier against moisture, wind, and other elements. Choosing the best underlayment for your roofing project is vital to ensure the longevity and durability of your roof. In this article, we will delve into the world of roofing underlayments and discuss the factors to consider when selecting the best underlayment for your needs.

  1. Understand the Types of Underlayment:

There are various types of underlayment available on the market, each designed to cater to different roofing requirements. The three main types include:

a. Asphalt-saturated felt: This is a traditional underlayment made from organic or fiberglass materials saturated with asphalt. It offers excellent waterproofing capabilities and is suitable for most roofing projects.

b. Synthetic underlayment: Made from advanced synthetic materials such as polypropylene or polyester, synthetic underlayment provides superior strength, durability, and resistance to moisture. It is often lighter and easier to install than asphalt-saturated felt.

c. Rubberized asphalt underlayment: This type combines the benefits of synthetic and asphalt-saturated underlayments. It offers excellent waterproofing and self-sealing properties, making it ideal for regions with heavy rainfall or extreme weather conditions.

  1. Consider Climate and Weather Conditions:

The climate and weather conditions in your area play a significant role in determining the best underlayment for your roofing project. If you live in an area prone to heavy rainfall or extreme weather events, a rubberized asphalt underlayment would be a wise choice. It provides superior protection against water infiltration and can withstand harsh weather conditions.

On the other hand, if you reside in a region with a mild climate, an asphalt-saturated felt underlayment may suffice. It offers reliable moisture resistance and is cost-effective for most residential roofing projects.

  1. Evaluate Longevity and Durability:

The longevity and durability of the underlayment directly impact the lifespan of your roof. Synthetic underlayments tend to outperform traditional asphalt-saturated felts in terms of durability. They are resistant to tearing, UV radiation, and damage from foot traffic during installation.

Rubberized asphalt underlayments, known for their superior strength, are also highly durable and can withstand extreme temperature fluctuations. Although they may be costlier than other options, their longevity makes them a worthwhile investment, particularly for long-term roof protection.

  1. Weight and Ease of Installation:

The weight and ease of installation are crucial factors to consider, especially if you are working on a large roofing project or have time constraints. Synthetic underlayments are generally lightweight, making them easier to handle and install. Their lightweight nature also reduces the stress on the roof structure.

Asphalt-saturated felt underlayments, while slightly heavier, are still relatively easy to install. However, they require careful handling due to their delicate nature.

  1. Price Considerations:

Budget is an important consideration for most homeowners. Asphalt-saturated felt underlayments are typically the most cost-effective option, making them a popular choice for residential roofing projects with budget constraints. Synthetic underlayments and rubberized asphalt underlayments tend to be pricier but offer additional benefits such as enhanced durability and weather resistance.


Selecting the best underlayment for your roofing project is essential for ensuring a long-lasting, weather-resistant roof. Consider factors such as climate, weather conditions, longevity, ease of installation, and your budget before making a decision. While asphalt-saturated felt underlayments are a reliable and cost-effective option, synthetic underlayments and rubberized asphalt underlayments provide enhanced durability and protection. By choosing the right underlayment, you can safeguard your roof and enhance the overall performance of your roofing system. You can contact Advanced Roof Restoration in Perth if you have more questions.