Easy-to-install underlayment products for steep-slope roofs.

The key to a reliable, well-protected steep-slope roofing system is its underlayment. At Polyglass, we lead the industry with our selection of self-adhered roofing underlayment products to meet every steep-slope roofing situation and challenge.

Equipped with revolutionary ADESO® self-adhered technology, Polystick roof underlayments not only provide your customers with the most advanced and time-tested roofing technology on the market — they also save contractors time and money on installation cost.

  • Safe and easy installation
  • Independently-tested and certified
  • Warranties up to 30 years
  • Watertight protection

Learn more about our self-adhered and nailable roofing underlayment products below”.


The benefits of self-adhered underlayment

When deciding on what roof assembly to install, a quality roof underlayment can play a critical role in the performance of the roof system. With Polystick underlayments, you can build your business with long-term satisfied clients while enjoying reduced installation costs and fewer callbacks.

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Let’s take a look at the benefits of Polystick self-adhered underlayments.

  • Safe and easy installation with ADESO® Self-Adhered Technology
  • Independently tested and certified
  • Warranties up to 30 years
  • Watertight protection

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Frequently Asked Questions

  • How is Polyglass underlayment installed?

    All Polyglass underlayment products are self-adhered using our patented ADESO technology, coming in easy-application peel-and-stick rolls.

  • How long can roof underlayment be exposed?

    Polystick underlayments from Polyglass can be exposed for 90-180 days, depending on the specific product:

    Underlayment Max exposure time
    Polystick® IR-Xe 90 days
    Polystick® MTS Plus 180 days
    Polystick® P 180 days
    Polystick® TU MAX 180 days
    Polystick® TU P 180 days
    Polystick® TU Plus 180 days
    Polystick® XFR 180 days
  • What is ADESO?

    ADESO is a revolutionary self-adhered technology offered by Polyglass on many of our APP and SBS membranes. Using a combination of patented features, ADESO technology enables the manufacture of dual-compound membranes with a true APP or SBS formulation on the top weathering side and a powerful self-adhered formulation on the bottom layer, providing superior adhesion without the need for additional adhesives.

    No other underlayment on the market is made with this unique formulation, and none can surpass its level of protection.

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  • What is underlayment?

    An underlayment “lays under” the main components of a roofing system to provide an extra layer of waterproofing protection. Underlayments are typically made of rubberized asphalt, asphalt-saturated felt, or synthetic materials. The underlayment is attached directly to the roof deck and is designed so other roofing materials can be installed directly on top of it.

  • What kind of project support services do you offer?

    At Polyglass, we back our product offerings with expert consulting, knowledgable technical support, and unmatched customer service throughout your project. Our expert support services include roof design analysis, pre-bid budget assistance, technical services, and progress inspections throughout your project. In addition, our website offers extensive product information and educational resources, and our Polyschool course offerings offer even more detailed instruction on the best ways to install and use Polyglass products.

  • Which underlayment is best for my roof?

    Polyglass offers an extensive range of underlayment products designed to provide outstanding protection for many different challenges and conditions. For example, Polystick TU MAX is designed for high-temperature applications, while Polystick IR-XE is formulated for extra water and ice protection. For buildings requiring additional fire resistance, we recommend Polystick XFR, while Polystick MTS is ideal for use under metal, tile, and shingle roofs. For specific questions regarding which underlayment is best for your project, reach out to our team of experts.

Why Polyglass?

Polyglass® is an ISO 9001:2015 Certified, leading manufacturer of modified bitumen roofing and waterproofing membranes and roof coatings for low- and steep-slope applications. We are an industry leader in self-adhered underlayments that are specially designed to help contractors save time and labor costs.

Utilizing the most technologically advanced manufacturing process in the industry, Polyglass operates six state-of-the-art manufacturing facilities — five in North America and one in Italy that serves all of Europe.

As a company that prides itself in innovative and quality roofing products that exceed the needs and expectations of its customers all around the world, we offer roofing contractors the following benefits:

  • An extensive line of underlayments and other roofing products that allow for custom-designed solutions for unique construction challenges and environmental conditions
  • Outstanding technical support and project assistance
  • The most trusted warranties in the industry
  • A registered contractor program and a wide array of contractor resources, including instructional videos to Polyschool courses.
  • The ability to earn points and redeem prizes for every Polyglass purchase with Club Premio

Our team of experts is here to help you choose the best underlayment products for your next project. Get in touch with our team today.

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