XS Backer


XS Backer Mix kit includes (1) 50 lb bag of glass fiber-reinforced cement and a one-gallon ox XS modifier. When combined it creates structural strength for GFRC face coats. Available in white & gray cement. It can be colored with XS Color or SC Color packs. Use with both  XS &DFRC PreCast, GFRC Face, and Terrazzo.


Product Data Sheet | download

Safety Data Sheet [Bag Mix] | download

Safety Data Sheet [Modifier] | download

SureCrete’s XS GFRC Backer Mix is a dual-component cement-based bag mix that is unmatched in fiber loading. It is not a stand-alone blend but is designed to be used in conjunction with XS Face or XS Precast. XS Backer significantly reduces the materials and labor required to construct traditional precast concrete. Reinforcement steel is eliminated, thinner precast pieces are routine, quicker production times are accomplished, and no “B” mold is required. A stronger, denser, and more flexible cementitious composite is created by combining cutting-edge technology with modern fiber advancements. With a broad range of coloring and texture selections along with the manipulation of water demand and placement, design considerations are nearly limitless. XS Backer, when used in conjunction with XS Face or XS Precast, produces concrete countertops, fireplace mantles and facades, shower surrounds, wall panels, furniture and many other architectural elements. XS Backer is the perfect medium for residential, commercial, and industrial applications.

XS Backer was designed to help alleviate the typical constraints of precast concrete – thick and heavy pieces that can’t span long distances without some structural reinforcement such as steel rebar. Using the “reduction method” we’ve detailed in our in-person training class events throughout the country and in our instructional how-to videos, we’ve enabled you – the contractor or homeowner looking to craft a new architectural or precast concrete piece – to make cast concrete at a fraction of the typical thickness and weight of normal concrete as well as allow you to create much longer and wider pieces, all without the use of additional structural support.


XS Backer Mixing Instructions

  1. Utilize a handheld concrete mixer with a helical (spiral) mixer blade, such as an Eibenstock model #EHR 20R or similar.
  2. Thoroughly mix XS Precast Modifier.
  3. Add 1 gal (3.8 L) XS Precast Modifier to a clean 5 gal (18.9 L) pail or similar mixing vessel
  4. Add XS TruColor (color pack) to XS Precast Modifier (if desired) and mix.
  5. While mixing add approximately ¾ of the XS Backer bag.
  6. Continue mixing until all dry powder is incorporated.
  7. Scrape sides of pail with margin trowel to prevent dry pockets from forming.
  8. Add 16 oz (0.5 L) water, mix into a looser consistency.
  9. Add remaining XS Backer and continue to mix for 2 – 3 minutes.
  10. Up to an additional 24 oz (0.7 L) water may be added for a looser consistency as desired.

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