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Understanding roof underlayments

Understanding roof underlayments
August 23, 2025 at 6:00 a.m.

By Fields Roof Service. 

This overlooked layer protecting your home deserves your attention.  

When people picture their roof, their minds typically go to the shingles, gutters, chimneys — the parts visible on the outside. However, there are so many more parts to a roof that work together below the surface to make the whole system the protector it is. One of these often-overlooked parts is the roofing underlayment.  

We at Fields Roof Service created this guide to help you understand the important role roofing underlayment plays in safeguarding your home. 

The role of roofing underlayment in moisture protection 

One of the primary functions of roofing underlayment is to serve as a secondary barrier against water and moisture. In the event that your outer roofing material becomes compromised — be it through cracks, breaks or missing shingles — the underlayment is there to prevent water from infiltrating your home. By having a robust and high-quality underlayment, you can significantly reduce the risk of leaks and the consequent need for costly repairs. 

Enhancing the longevity of your roof 

A correctly installed and high-quality underlayment not only protects against moisture but also contributes to the overall longevity of your roofing system. It does so by providing an additional layer of protection from the elements, including UV rays, wind and drastic temperature changes. This layer helps to minimize wear and tear on the roofing materials above, thereby extending the life of your roof and saving you money in the long run. 

The impact of underlayment on energy efficiency 

Another often overlooked benefit of roofing underlayment is its contribution to the energy efficiency of your home. Certain types of underlayment can act as an additional layer of insulation, helping to keep your home warmer in the winter and cooler in the summer. By improving your home’s energy efficiency, you can enjoy lower heating and cooling costs and contribute to a more sustainable environment. 

Choosing the right underlayment for your home 

The selection of the appropriate underlayment is critical to maximizing these benefits. Various types of underlayment are available, including asphalt-saturated felt, rubberized asphalt and non-bitumen synthetic underlayment, each with its own set of advantages. Factors such as the climate, the type of outer roofing material used and your specific roofing needs should guide your choice. Consulting with professional roofing experts who understand the local climate and roofing requirements is vital in making the right decision. 

Protect your home with Fields Roof Service 

Understanding the critical role of roofing underlayment is just the first step in ensuring your home is well-protected and efficient. Partnering with a trusted local roofing service provider like Fields Roof Service can make all the difference. Our team of experienced professionals is ready to guide you through selecting the ideal underlayment for your home, ensuring proper installation and maintaining your roof’s health for years to come. 

If you’re looking to enhance the longevity, protection and efficiency of your roof, don’t overlook the importance of high-quality underlayment.  

Original article and photo source: Fields Roof Service

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