The roof is more than just the shingles on its surface. It’s made up of an assortment of parts that all play individual roles, and some are hidden from sight. One of these hidden parts is the underlayment. Despite it not being visible from the curb, it plays a vital role in keeping the entire structure healthy and stable.
What’s the Underlayment?
As its name suggests, the underlayment is the layer underneath all the roofing materials – meaning it’s installed under the shingles and all the other parts. It’s essentially a waterproof barrier that serves as an additional layer of protection from water damage. When all else fails, the underlayment is the roof’s last line of defense from weather intrusion.
Types of Underlayment
When it’s time to schedule roof replacement on your old roof, you’ll also need to replace the underlayment. You have three options for underlayment: asphalt saturated, synthetic and rubberized asphalt underlayment.
Asphalt saturated is the oldest of the underlayment types and was the quintessential type until the appearance of synthetic materials. Despite its loss of popularity, it’s still a reliable and strong underlayment with innate strength and water resistance. It’s also readily available, making it the most affordable of the three.
Non-bitumen synthetic underlayments replaced the previous underlayment style and is now the most commonly used type for both residential and commercial roofs. You can think of it as the direct upgrade from asphalt saturated, thanks to its higher water resistance and durability. It’s also manufactured so that it can be fully applied to the entire roof.
Finally, there’s rubberized asphalt which is widely considered a premium underlayment material. It has all the benefits of asphalt-saturated and non-bitumen synthetic, but is also completely waterproof since it has more asphalt and rubber polymer content.
At Scro’s Roofing Company, we offer complete roofing services. We’ll help you pick the right roofing underlayment for your home so that your new roof is completely protected from the water intrusion and the elements. Call us today at (919) 461-0937 to learn more.