FelTex SA300®

Everything you love about FelTex premium grade roof underlayment is now available with a high-performance, next-generation self-adhered backing. FelTex SA300 uses the trusted technology of premium grade FelTex, making it one of the strongest, most reliable and best-performing synthetic self-adhered roof underlayments on the market. It is unrivaled in its ease of application, requires no back-nailing in the field of the roof, does not require priming at low temperatures, and remains stable at extreme temperatures. FelTex SA300 is also known for its exceptional UV resistance (six months). It meets or exceeds code and industry nail sealability tests, and offers the most walkable surface in the industry with a proprietary Fiber Claw® woven fabric surface. FelTex SA300 is rated for commercial and residential applications, and is an ideal self-adhering underlayment for projects subject to ice damming and severe weather.

  • Next Generation Technology: FelTex SA300 has the widest functional temperature range of any self-adhered underlayment, creating a continuous water-shedding surface without nailing.
  • Versatile: FelTex SA300 meets code requirements for initial tack at 0° F and has a high adhesive melt point at 280° F, making it the most versatile choice for a wide range of projects.
  • Simpler to Apply: FelTex SA300 installs quickly and easily. Split-poly release films and lighter weight rolls are easier to handle and save time and money on the job site.
  • Easier to Handle: FelTex SA300 is up to four times lighter than competitive products and easier to handle during all stages of installation.
  • Better Coverage: FelTex SA300 comes in 48″ rolls, saving labor costs and improving coverage.
  • Reliable: Proprietary Fiber Claw® walking surface offers dynamic steep-slope traction.
  • Stronger: FelTex SA300 is remarkably stronger than competitive products, will not delaminate, and is resistant to tearing and stretching.
  • Cold Weather Flexibility: FelTex SA300 does not become stiff and brittle in cold temperatures.
  • UV Exposure Rating: FelTex SA300 is engineered to resist excessive degradation from normal UV exposure for up to six months.
  • Meets Building Codes: FelTex SA300 is designed for residential and commercial projects.
  • Asphalt-Free: FelTex SA300 is 100% inorganic and will not support the growth of mold.
  • Sustainable: FelTex SA300 is environmentally responsible, and may contribute to your LEED and NGBP ratings.
  • Warranty: A limited lifetime warranty applies to FelTex SA300.

FelTex SA300 outperforms other high-temp underlayments.

FelTex SA300 is unlike any other self-adhered roof underlayment on the market and is a single, versatile and supreme solution for all climates.

Thermal StabilityMIn. Application TemperatureWalking SurfaceWeight Per Two-Square RollRoll WidthUV- Exposure Rating
FelTex SA300BestBestExcellent20 lbs48"180 days
Other Peel-and-Stick UnderlaymentAverageAveragePoor to Average50-70 lbs36-40"30 days
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Sustainability ensures the future of the environment and your business. That’s why SystemComponents® products are engineered to be environmentally responsible. To determine the environmental responsibility of a structure, the National Association of Home Builders (NAHB) and the U.S. Green Building Council (USGBC) have each established rating systems (NGBP1 and LEED2). A higher rating denotes a healthier home at a lower cost to the environment. So how can FelTex products contribute to raising your ratings and lowering your environmental impact?

  • SystemComponents products are termite- and water-resistant, reducing structure degradation from the elements and enhancing longevity.
  • SystemComponents products contain no asphalt and are 100% recyclable in regions with established recycling programs.
  • SystemComponents products are more stable in wetting cycles than traditional roofing felt.
  • SystemComponents products may contain up to 10% recycled material.
  • Because SystemComponents products weigh less than conventional underlayments, there is less transportation pollution than traditional underlayment materials.
  • SystemComponents products weigh less than Type 30 felt or other asphalt-saturated underlayments and comes in efficient sizes to help reduce construction waste.

The decision to use SystemComponents products is not only an investment in the future of the environment, it’s also an investment for the future of your business. As the demand for sustainable home construction grows, so does the need for environmentally responsible builders. The forward-thinking builder who begins practicing sustainability today is well-positioned to be a leader of the industry tomorrow.

1NGBP is a registered trademark of the National Association of Home Builders (NAHB).
2LEED is a registered trademark of the U.S. Green Building Council (USGBC).