ReHarmony Silica Matte Clear Coat

ReHarmony Silica Matte Clear Coat is a water-based, matte, transparent, single-component coating formulated with silicone-modified emulsion as its primary film-forming material and high-performance additives. It delivers excellent protective properties such as waterproofing, breathability, anti-yellowing, and high durability, effectively enhancing the wall's resistance to mold, dirt, and weathering while maintaining long-lasting cleanliness and beauty.

Its matte finish provides exceptional decorative effects, concealing wall imperfections and ensuring an even appearance. As an eco-friendly, non-toxic product, it is ideal for use on stone paints, textured coatings, and other water-based materials, offering reliable protection and aesthetic enhancement.

• Color: Transparent

• Composition: Silicone-acrylic emulsion, fillers, additives, solvents

• Application Methods: Brush, roller or spray

• Coverage: 10-13 m²/L (single coat)

• Dilution: 10-15% water addition

• Film Thickness: 30-50μm

• Drying Time (25°C, 50% RH): 24-48 hours

• Recoat Time (25°C, 50% RH): 24-48 hours

• Solid Content: 40-60%

• Shelf Life: 12-18 months

• Recommended Coating System:

  • Water-based epoxy primer

  • Acrylic primer

  • Intermediate coat

  • Polyurethane intermediate coat

  • Putty

  Actual paint consumption and coverage area may vary depending on application method, surface hardness/roughness and environmental conditions.

Product Specifications

Superior Protective Performance

Eco-Friendly and Safe

Feature

Exceptional Matte Decorative Effect

Surface Preparation Technical Requirements

Substrate Inspection

• Verify substrates are free from cracks, looseness, powdering, oil stains, watermarks, rust, or peeling old coatings. Repair if necessary.

• Moisture content: ≤8% for concrete/metal substrates (to prevent blistering), ≤12% for wood (to avoid warping/mold).

Contaminant Removal

• Oil/grease: Clean with organic solvents (e.g., alcohol, acetone) or specialized cleaners to ensure no residue.

• Rust/oxidation: For metal substrates, use mechanical abrasion (sandpaper, wire brush), sandblasting (quartz sand/steel shot), or acid pickling to meet ISO 8501-1 St2 (manual) or Sa2.5 (blasted, with minimal residual stains).

• Old coatings/loose layers: Scrape off peeling sections and sand to a solid base. For concrete with laitance, remove via pressure washing or mechanical grinding.

Surface Leveling

• Pits/cracks: Fill with epoxy putty/bondo, then sand smooth (grit: 120–240 for metal; 80–180 for concrete/wood).

• Wood/plastic: Sand to remove burrs; apply sealer primer on wood knots to prevent bleeding.

Dust Removal

• After treatment, remove dust/debris with compressed air, vacuum, or clean cloth to ensure adhesion.

Substrate-Specific Requirements

Metal Substrates (e.g., steel, aluminum)

• Post-derusting: Apply primer within 4–6 hours to prevent re-rusting. Reclean if delayed or surface moisture returns.

• Galvanized/aluminum: Avoid excessive sanding damaging oxide layers. Clean with alcohol; apply zinc-yellow epoxy or aluminum-specific primer.

Concrete Substrates (walls, floors)

• New concrete: Cure ≥28 days; neutralize alkalinity (pH ≤10) with dilute HCl/oxalic acid, then rinse/dry.

• Old concrete: Remove hollow/weakened layers; fill cracks >0.2mm with elastic putty/epoxy resin.

Wood Substrates (outdoor, furniture)

• Natural wood: Remove bark/resin (wipe with alcohol); fill wormholes and sand. For outdoor use, apply wood sealer first.

• Engineered wood (e.g., MDF): Seal edges; sand surfaces smooth to avoid fiber exposure.

Existing Coatings (repainting scenarios)

• Intact coatings: Lightly sand to roughen; remove chalky layers/stains.

• Peeling/cracked coatings: Strip to bare substrate and treat as new. Verify compatibility between old solvent-based coatings and new silicone-acrylic topcoats (to prevent lifting).

Key Notes

1. Environmental Conditions

   • Temperature: 5–35°C; humidity ≤85%.

   • Implement dust control in windy conditions.

2. Tools

   • Use clean, dry abrasives (e.g., silica sand) for blasting.

   • Sand progressively from coarse to fine grit.

3. Inspection

   • Visual: No oil, rust, pits, or sharp edges.

   • Adhesion: Cross-cut test (ISO 2409) for primer bonding.