Sika

Sika Sikalastic® TC 235 – 5 Gallon Low-VOC Aliphatic Polyurethane Top Coat for Deck Coating Systems

Sika Sikalastic® TC 235 – 5 Gallon Low-VOC Aliphatic Polyurethane Top Coat for Deck Coating Systems

$417.49
SKU: SIK 809597-MXP
Shipping: Free Shipping
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Description

Sikalastic® TC 235 is a low-VOC, moisture-curing aliphatic polyurethane top coat designed for use in Sikalastic® Traffic 1500 Low VOC deck coating systems. It is a one-component waterproofing coating with UV resistance, providing long-term durability and color stability. Available in standard colors or as a Tint Base for pedestrian applications, it protects substrates while resisting weathering and wear.

Features & Benefits

  • Low-VOC formulation: Compliant with environmental regulations.
  • UV Resistant: Maintains performance and color under sunlight exposure.
  • Single-Component Design: Simplifies application, reducing labor time.
  • Durability: Shore A hardness of 89 with tensile strength over 2,700 psi.
  • Flexibility: Elongation of 555% supports crack-bridging performance.
  • Aesthetic Options: Tint Base version supports 40 standard color packs for pedestrian applications.
  • Waterproofing Protection: Long-lasting top coat for traffic decks and balconies.

Technical Data

  • Chemical Base: Single-component, aliphatic polyurethane
  • Packaging: 5-gallon (18.93 L) pail
  • Color Options: Grey, Charcoal, Tan, Dark Tan, Tint Base (custom with Sikaflex®-900 packs)
  • Shelf Life: 1 year (unopened)
  • Storage Conditions: 40–95 °F (4–35 °C), condition to 65–85 °F (18–30 °C) before use
  • Viscosity: 2,000–8,000 cps (temperature-dependent)
  • Solid Content by Volume: 82%
  • Hardness: Shore A 89 (ASTM D 2240)
  • Tensile Strength: 2,710 psi (ASTM D 412)
  • Elongation at Break: 555% (ASTM D 412)
  • Coverage: 55–60 ft²/gal @ 25 mils; 75–80 ft²/gal @ 20 mils
  • Cure Time: 12–14 hrs @ 73 °F, 50% RH
  • Traffic Readiness: Pedestrian: 48 hrs / Vehicular: 72 hrs

Recommended Applications

  • Parking garages
  • Stadiums & arenas
  • Balconies and plywood decks
  • Plaza decks
  • Commercial & restoration projects

Common Substrates

  • Concrete: Fully cured, dry, shot-blasted (CSP-3 profile), <4% moisture
  • Plywood: Smooth-faced, exterior-grade, tongue & groove, minimum 23/32"
  • Metal: Ferrous, non-ferrous, galvanized, stainless (priming required)
  • Existing Coatings: Abraded, solvent cleaned, adhesion tested before recoating

Application Details

Surface Preparation:

  • Ensure substrates are dry, clean, and structurally sound.
  • Concrete: Shot-blasted, fully cured, moisture content below 4%.
  • Plywood: Seams caulked and reinforced with fabric if required.
  • Metals: Prepared per SSPC/NACE standards and primed.
  • Existing coatings: Abraded and solvent wiped before recoating.

Mixing: Mix slowly with a Jiffy-type mechanical mixer until uniform. For Tint Base, add two Sikaflex®-900 color packs per 5 gallons and mix 4–6 minutes, avoiding air entrapment.

Application: Apply with a notched squeegee/trowel, then backroll with phenolic resin roller. Broadcast aggregate evenly into wet coating if required. Minimum cure is 12–14 hrs before overcoating. Open to pedestrian traffic after 48 hrs, vehicular after 72 hrs.

Limitations:

  • Do not apply if substrate is damp, frosted, or if rain is expected within 8–12 hrs.
  • Not suitable for continuous immersion.
  • Tint Base version is pedestrian-only (not vehicular).
  • Dark colors may fade over time under UV exposure.