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SpecChem Spec CJ Guard

SpecChem Spec CJ Guard

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Contractor Overview

Spec CJ Guard is a two-component epoxy system. Water-based, Control Joint Filler Stain Protectant Spec CJ Guard is a water-based blend of film-forming polymers designed to prevent or reduce staining of concrete due to overfill of epoxy or polyurea joint fillers. When applied to concrete adjacent to floor joints prior to filling, Spec CJ Guard dries to form a clear, protective film that seals and protects the surface, making the shaving of overfilled joints.

Best For

  • Structural bonding and adhesive work
  • Concrete repair bonding
  • Commercial epoxy applications

Key Features

  • Low odor and contains 13 g/l VOC
  • Water-based with very low odor and contains 13 g/l VOC
  • VOC

Material & Application Notes

Water-based, Control Joint Filler Stain Protectant Spec CJ Guard is a water-based blend of film-forming polymers designed to prevent or reduce staining of concrete due to overfill of epoxy or polyurea joint fillers. When applied to concrete adjacent to floor joints prior to filling, Spec CJ Guard dries to form a clear, protective film that seals and protects the surface, making the shaving of overfilled joints easier and faster. One-coat application system that is easy to spread and offers excellent coverage.

Why Contractors Choose It

Contractors choose Spec CJ Guard when bonding strength, placement consistency, and the right epoxy chemistry matter to the repair or installation.

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Application

Used to protectconventional concrete, polished colored concrete, stained concrete, and other porous surfaces from stains caused by control joint filler overfill.

Surface Preparation:

  • Apply Spec CJ Guard before joint cleaning operations.
  • Ensure the concrete surface is clean, dry, and free from any contaminants such as oil, grease, and curing compounds.
  • The product should only be applied to joints that will be filled the same day.

Application Rate:

  • Coverage rate may vary based on the texture and porosity of the concrete and the type of joint filler used.
  • Typically, 650-800 sq-ft per gallon, depending on application conditions.
  • A test application is recommended to determine the optimal coverage rate.

Application Conditions:

  • Apply only when ambient and concrete temperatures are between 40°F to 90°F.
  • Allow Spec CJ Guard to dry completely before installing joint filler.

Removal:

  • After joint filler overfill has been shaved, remove the Spec CJ Guard film by saturating with water for 5 minutes, then scrub off any remaining residue.

Packaging

  • Available in 55-gallon drums, 5-gallon pails, and 1-gallon jugs (4 per case).
  • Clean tools and equipment with water immediately after use.

Test Data

  • Type:Water emulsion
  • Flash Point:Above 212°F
  • Color:Milky Liquid
  • Shelf Life:1 year

Cleaning

Clean tools and equipment with water immediately after use.