Rock Binder

Available Sizes
  • Four Gallon Unit in 1 gallon BAG-PAKsTM
  • 15 Gallon Unit in three 5 gallon pails
  • 165 Gallon Bulk Units in three 55 gallon drums
  • 100% solids
  • Excellent adhesion
  • Good chemical resistance
  • Odorless / solvent-free
  • Easy mix ratio
  • Good UV resistance


ROCK-BINDER is a water clear, 100% solids, 2-component, cyclo-aliphatic epoxy binder resin. ROCK-BINDER is formulated to bind larger size decorative stones into a trowel grade matrix.



ROCK-BINDER is used as a universal binder resin for creating decorative stone trowel applied overlay systems. It is recommended primarily for indoor use, but can be applied outdoors when maintained with a more UV stable coating such as CHEM-ROCK UV.


Typical Coverage

ROCK-BINDER is typically used in a ratio of 1 mixed gallon of liquids to 150 pounds of ¼” graded decorative rock to yield 50 sq. ft. at ½” thickness.


Physical Properties

Volume mix ratio 2 to 1 [Resin to Hardener
Viscosity (mixed) 250-450 CPS Typica
Solids Content (%) 100% (ASTM D-2697)
VOC Compliant with all US Regulations
Application Temps. 60° – 85° F
Hardness 55 (Shore D)
Gel Time 20 - 30 minutes @ 75° F
Dry to Touch (recoat with compatible products) 2 - 6 hours @ 75° F
Through Cure 7 - 10 hours @ 75° F
Ready for light traffic 24 hours @ 75° F
Shelf life 1 year in unopened units

Limitations & For Best Results

  • Do not thin this product.
  • Do not apply when humidity exceeds 70% indoors.
  • Do not allow to puddle during application.
  • Allow each coat to dry to ‘tack-free’ or clear prior to re-coat.
  • When re-coating, always apply the next coat within 24 hours of completing the previous coat.
  • Do not apply this product heavier / thicker than the recommended spread rate / mil thickness

Product Application

Apply using a hand or “hover trowel”. ROCK-TRED product test data is based on environmental temperatures of 75° F. Viscosity and working time are always affected by temperatures above or below that mark. When applying product always consider the ambient, surface, and product temperature at the time and place of installation.


Color and Textures

ROCK-BINDER is manufactured in WATER-CLEAR. Most ROCK-TRED products are available in a wide range of textures using an appropriate aggregate.


Chemical Resistance

Always refer to ROCK-TRED’s chemical resistance chart for specific information on each product / system or contact ROCK-TRED directly.


Product Storage

DO NOT allow ROCK-TRED products to freeze. All ROCK-TRED products should be properly stored above the floor on pallets or shelves, and in an area that has a constant minimum temperature of 50°F.


Surface Preparation

Always apply ROCK-TRED products to a clean / sound substrate that is free of laitance, grease, oils, debris, and curing compounds. Concrete substrates should be cured for a minimum of 28 days prior to application of product [except as otherwise noted on the individual Product Data Sheet]. Whenever possible, remove existing coatings and/or flooring systems completely; if complete removal is not possible always perform tests to determine adhesion and compatibility to the existing flooring. Mechanical preparation by means of a shotblasting or diamond grinding machine to a minimum CSP-3 profile followed by priming with an appropriate ROCK-TRED primer is the best and recommended installation method for ROCK-BINDER applications. If the substrate is not properly prepared and the appropriate profile is not achieved, failure of the product to adhere to the substrate may occur.


Clean Up

Application tools and equipment can be cleaned with soap and water immediately after use, or with solvent once the product has begun to cure.



Product containers will contain product residue and must be disposed of properly. Label warnings must be observed at all times. All containers must be disposed in accordance with federal, state, and local regulations.


Important Notice

Always read and acquaint yourself with ROCK-TRED’s Product Data Sheet, SDS [safety data sheet], and product labels for each individual product prior to mixing and prior to use. For further assistance, product questions, additional information and/or unexpected or unusual installation conditions – contact your Area Sales Representative or ROCK-TRED directly for recommendations. Kit components are pre-measured for optimal performance. Catalyzation errors due to incorrect mixing in the field voids product warranty.