MACt Seal is a two-component urethane-acrylic hybrid sealer specifically formulated to simplify and elevate the process of sealing Glass Fibre Reinforced Concrete (GFRC) and other surfaces. Designed with a user-friendly, non-foaming formulation, MACt Seal is easy to apply using a foam roller and highly tolerant of varied application techniques—significantly reducing the risk of roller lines and overlap marks. This high-scratch-resistant coating not only shields concrete from a wide range of contaminants but also offers flexibility in achieving diverse finishes. Whether you prefer a few thin coats for a matte look or multiple heavier coats for a high-gloss sheen, MACt Seal delivers a professional, durable finish.

Key Features & Benefits

1. Urethane-Acrylic Hybrid
   • High-Performance Composition: Provides robust protection against scratches, stains, and other forms of wear.
   • Flexible Application: Adapts to varying environmental conditions without yellowing.
2. Easy-to-Use Formulation
   • Minimal Roller Lines: A non-foaming mixture allows for smooth coverage with a foam roller, even for beginners.
   • User-Tolerant: Extended work time of up to 2 hours post-activation ensures ample room to address large or complex surfaces.
3. Adjustable Finish
   • Multiple Thin Coats: Achieve a faster-curing, matte appearance.
   • Heavier Coats: Build up to a glossier finish, albeit with a slower cure and cross-link time.
4. Final Coat Option
   • MACt Seal Final Coat: Bonds a silicon repellent layer for a non-yellowing, colourless top layer.
   • Single-Use Compatibility: Must be applied last; no additional sealers can adhere atop.
5. Durable & Long-Lasting
   • Scratch Resistance: Protects GFRC and other substrates from daily wear.
   • Chemical Resistance: Performs well against various contaminants once fully cross-linked.

Recommended Usage & Application

1. Mixing
   • Base : Activator = 16:1 by Volume: Weigh or measure activator precisely, then stir thoroughly for approximately 3 minutes.
   • Work Time: Two-hour pot life after mixing; use all product within this window for best results.
2. Surface Preparation
   • Clean & Dry: Remove dirt, dust, and prior sealers; ensure surface is completely dry before application.
   • Avoid High Humidity: Slows cure and may cause milky or cloudy effects if moisture is trapped.
3. Application Process
   • Roller Method: Use a foam roller, working quickly and evenly to avoid overlap marks.
   • Multiple Coats: Allow each layer to dry before applying the next; heavier coats yield higher gloss, thinner coats dry faster to a matte sheen.
4. Final Coat (Optional)
   • MACt Seal Final Coat: If desired, mix with normal activator at the standard ratio, then apply a single thin layer for added water repellence.
   • No Additional Sealer: Final Coat cannot be topped with another layer of MACt Seal or a different sealer.
5. Curing Guidelines
   • 24 Hours: For initial cross-linking and handle-ready durability.
   • 7 Days: Achieves full chemical resistance and hardness; avoid harsh use or cleaning within this period.

Common Sealing Challenges & Solutions

1. Uneven Application
   • Cause: Incorrect applicator, excessive sealer, or inadequate coverage.
   • Solution: Use the recommended foam roller and adhere to manufacturer’s application rate.
2. Trapped Moisture
   • Cause: Sealing damp surfaces or applying in high humidity.
   • Solution: Ensure substrate is thoroughly dry; avoid sealing in very humid or wet conditions.
3. Peeling/Flaking
   • Cause: Poor surface prep, applying too thickly, or insufficient curing time.
   • Solution: Strip failing sealer, properly clean surface, and reapply MACt Seal in thin, even coats.
4. Roller Lines & Overlaps
   • Cause: Slow rolling pace or repeatedly rolling over partly cured sections.
   • Solution: Maintain a wet edge, use even roller strokes, and apply consistent pressure throughout the process.

Technical Specifications

Why Choose MACt Seal?

• Simplified Sealing: Eliminates the frustration of visible lines, overlap marks, and foaming issues.
• Versatile Finish: Transition from a quick-drying matte finish to a richly layered, high-gloss sheen.
• Durable Protection: Offers robust scratch and chemical resistance for GFRC and a variety of surfaces.
• Tailored Final Layer: MACt Seal Final Coat creates a non-yellowing, water-repellent barrier for optimal longevity and cleanliness.

MACt Seal represents a breakthrough in sealing GFRC and other surfaces, combining user-friendly application with high scratch and chemical resistance. By following the recommended mixing ratios, application techniques, and cure times, you’ll achieve a smooth, uniform finish—whether you prefer a subtle matte or a vibrant, high-gloss shine. For an even more advanced finish, consider MACt Seal Final Coat as the ultimate protective layer, ensuring your project stands the test of time in both looks and performance.