AlphaGuard Si Poly Fil:

AlphaGuard™ Si Poly Fil

High Performance Polyethylene Fiber for use with AlphaGuard Si 70 and AlphaGuard Si 100

Mixing AlphaGuard Si Poly Fil with AlphaGuard Si 100 or AlphaGuard Si 70 creates a brushable mastic version with increased viscosity and tensile strength and reduced sag that is ideal for when you need to make simple repairs, manage vertical applications or fill irregular surfaces.  AlphaGuard Si Poly Fil can be added to AlphaGuard Si 100 or AlphaGuard Si 70 at a desired ratio between 20% and 50% by volume.


AlphaGuard Si Poly Fil is made of high performance polyethylene micro fibers designed for use with the two AlphaGuard Si solutions.

Roofing & Weatherproofing Peace of Mind

We deliver peace of mind to building owners and facility managers by managing roofing and building life cycles for customers in all industries, including education, healthcare, government, manufacturing and more.

  • Tremco Roofing offers the industry's most comprehensive roofing and weatherproofing solutions for restoration, repair, maintenance, replacement and new construction.
  • WTI (Weatherproofing Technologies, Inc.) provides roofing services, construction management and general contracting.
  • Our Canam Building Envelope Specialists affiliate provides building envelope solutions to eliminate air leaks, improve energy efficiency and reduce costs.


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