Consolideck® GuardEXT – Durable Exterior Concrete Protective Coating for Stain Resistance
Consolideck® GuardEXT is a durable, non-yellowing protective coating engineered to dramatically increase the stain resistance of exterior concrete flatwork. Designed for contractors working with steel-troweled, broomed, stamped, stained, integrally colored, and color-hardened concrete, it forms a tough, long-lasting protective shine that shields surfaces from accidental spills. GuardEXT is suitable for use on both new and existing exterior concrete exposed to food or petroleum-based product spills.
Unlike coatings that can yellow or compromise traction, GuardEXT maintains slip resistance after treatment and delivers a non-yellowing finish that enhances appearance without creating a safety liability. Its compatibility with Consolideck's line of densifiers and color systems makes it the logical finishing step in a complete surface treatment workflow.
Technical Specifications
| Specification | Details |
|---|---|
| Product Line | Consolideck GuardEXT |
| Type | Exterior Concrete Protective Coating / Concrete Sealer |
| Size | 1 Gallon |
| Application Method | Pump-up sprayer |
| Dry Time | Within 60 minutes |
| Finish | Protective shine, non-yellowing |
| Slip Resistance | Maintained after treatment |
| Protection Type | Stain resistance against food and petroleum-based product spills |
| Suitable Surfaces | Steel-troweled, broomed, stamped, stained, integrally colored, and color-hardened exterior concrete |
| Compatible Products | Consolideck LS, LS/CS, Blended Densifier, ColorHard |
| VOC Content | ≤100 g/L |
| CARB 2007 Compliant | Yes – Concrete/Masonry Sealers category (100 g/L limit) |
| CDPH Standard Method v1.2-2017 Compliant | Yes |
| Total VOCs (after 14 days, CDPH method) | 0.5–5.0 mg/m³ |
| CSI MasterFormat (2014) Division | 03 35 00 |
| Manufacturing Location | Lawrence, KS |
| Declare Label | PRO-0013 |
| LBC Red List Status | Red List Free |
| SCS Indoor Advantage Gold | Yes (select products) |
Key Features & Benefits
Non-Yellowing Protective Finish
GuardEXT is formulated to resist yellowing over time, preserving the appearance of decorative and standard gray concrete. For contractors delivering finished exterior flatwork, a coating that maintains its clarity protects both the surface and the quality of the installation.
Fast Dry Time – Within 60 Minutes
Drying within 60 minutes reduces site downtime and allows crews to complete projects without extended curing delays. This is particularly valuable on commercial jobs where traffic or subsequent trades need access to the surface quickly.
Maintained Slip Resistance
Surfaces treated with GuardEXT retain their slip resistance after application, meeting a critical safety requirement for exterior flatwork. Contractors can apply a protective coating without introducing a traction hazard on walkways, patios, or other high-traffic concrete areas.
Broad Surface Compatibility
GuardEXT works across a wide range of exterior concrete types — from standard broomed slabs to decorative stamped and stained surfaces — making it a versatile single-product solution for varied project requirements. This reduces the need to stock multiple sealers for different concrete finishes.
Stain Protection Against Food and Petroleum Spills
The coating is specifically engineered to protect against accidental spills of food and petroleum-based products, two of the most common staining agents on exterior concrete in commercial and residential applications. This makes GuardEXT well-suited for outdoor dining areas, driveways, service bays, and similar environments.
Green Building Compliance
GuardEXT meets CARB 2007 VOC content limits (≤100 g/L) and is compliant with CDPH Standard Method v1.2-2017 for low-emitting materials. It carries a Declare label (PRO-0013) and is certified Red List Free under the Living Building Challenge 3.x, supporting LEED 2009, LEED v4.x, CALGreen, WELL v2, and Fitwel project documentation.
Common Applications
Stamped and Decorative Concrete
GuardEXT enhances the appearance of stamped concrete by adding depth and a protective shine while preserving the decorative finish against staining and wear.
Integrally Colored and Color-Hardened Concrete
The coating adds luster to colored concrete surfaces and protects the color investment from petroleum and food spills that can discolor or degrade the finish over time.
Chemically Stained Concrete
GuardEXT is suitable for use over chemically stained exterior concrete, enhancing the appearance of the stain while providing a protective barrier.
Steel-Troweled and Broomed Flatwork
Standard exterior slabs — whether steel-troweled or broomed — benefit from GuardEXT's stain resistance and shine without altering the surface texture or slip profile.
Concrete Treated with Consolideck Densifiers
GuardEXT is the recommended topcoat for surfaces already hardened and dust-proofed with Consolideck LS, LS/CS, or Blended Densifier, completing a full-system approach to concrete surface protection.
Compatible Materials
- Consolideck LS® (Lithium Silicate Densifier)
- Consolideck LS/CS® (Lithium/Colloidal Silica Densifier)
- Consolideck Blended Densifier
- Consolideck ColorHard (Color Hardener)
- Steel-troweled exterior concrete
- Broomed exterior concrete
- Stamped concrete
- Chemically stained concrete
- Integrally colored concrete
- Color-hardened concrete
Product Documents
- Product Data Sheet
- Safety Data Sheet (English)
- Safety Data Sheet (Spanish)
- Safety Data Sheet (Canadian French)
- LEED Verification Letter
- Green Building Submittal Information
- VOC Compliance
- Slip Resistance – ANSI B101.3
- Slip Resistance – ANSI B101.1
- Stain Resistance Testing Summary
- SCS Certification
- LBC Red List Conformant Product Summary
- LBC Red List Conformant Summary (Updated)
Application Instructions
Equipment
- Apply using a pump-up sprayer.
Application
- Apply GuardEXT to new or existing exterior concrete surfaces.
- Ensure surface is clean and dry prior to application.
- Apply evenly using a pump-up sprayer.
- Allow to dry — surface dries within 60 minutes.
Frequently Asked Questions
Q: Can GuardEXT be used on existing concrete, or only new installations?
A: GuardEXT is suitable for both new and existing exterior concrete surfaces.
Q: Will GuardEXT affect the slip resistance of the treated surface?
A: No. Surfaces treated with GuardEXT maintain slip resistance after treatment.
Q: Is GuardEXT compatible with Consolideck densifiers?
A: Yes. GuardEXT is specifically recommended for surfaces previously treated with Consolideck LS, LS/CS, or Blended Densifier, and it also works with Consolideck ColorHard.
Q: Does GuardEXT meet green building certification requirements?
A: GuardEXT supports documentation for LEED 2009, LEED v4.x, CALGreen, Living Building Challenge 3.x, WELL v2, and Fitwel. It is CARB 2007 compliant, CDPH Standard Method v1.2-2017 compliant, carries a Declare label (PRO-0013), and is certified Red List Free.
Q: What types of spills does GuardEXT protect against?
A: GuardEXT is designed to protect exterior concrete from accidental spills of food and petroleum-based products.
Q: Will GuardEXT yellow over time?
A: No. GuardEXT is specifically formulated to be non-yellowing, preserving the appearance of the treated concrete surface over time.