Why Is Roofing Underlayment Important?

Yourroofingsystem is made up of many different components that are designed to work together to protect your home from the elements. Your roof involves a lot more than the shingles, chimney and gutters you see from the curb. In fact, one of the most important components of the roof is hidden from sight: the underlayment. This crucial component plays a vital role in the structural integrity of your roofing system.


The Roofing Underlayment


The underlayment is installed directly onto the roof deck, under all the other roofing materials. It is a waterproof or water-resistant material that acts as an added layer of protection from the elements, particularly damage from rainwater. There are three types of roofing underlayment: asphalt saturated, non-bitumen synthetic and rubberized asphalt.




Asphalt-saturated felt used to be the go-to choice for roofing underlayment until around 15 years ago when consumers developed a preference for synthetic materials. It remains a reliable material that is resistant to water and flexible when exposed to extreme temperatures. Asphalt-saturated felt is generally the least expensive type of underlayment and performs very well when installed properly by an experienced roofing company.


Non-Bitumen Synthetic


Non-bitumen synthetic is the most commonly used type of underlayment today. It offers better water resistance than asphalt-saturated felt and is designed for full applications, making it a cost-effective choice for many homeowners.


Rubberized Asphalt


Rubberized asphalt is a premium type of underlayment that combines the advantages of asphalt-saturated felt and non-bitumen synthetic. Unlike the two, rubberized asphalt is completely waterproof due to its large content of asphalt and rubber polymer.


Need help with your home improvement project? Turn to Winfield Builders for a smooth and stress-free experience! Our team offers professional exterior remodeling services — such as roof replacement and sidingand gutters installation — to clients in and around Annapolis and Columbia, MD. Call us at (410) 401-5045 or fill out thiscontact form to set an appointment or request a quote.


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