Sika

Sika Sikalastic® M 205 – 5 Gallon Low-VOC Polyurethane Base Coat for Deck Coating Systems

Sika Sikalastic® M 205 – 5 Gallon Low-VOC Polyurethane Base Coat for Deck Coating Systems

$305.39
  • SKU: SIK 807935
  • Availability: This product is available. Once ordered it will ship in 2-3 weeks. For any questions or concerns, please contact our service team.
  • Shipping: Free Shipping
Availability: This product is available. Once ordered it will ship in 2-3 weeks. For any questions or concerns, please contact our service team.
Current Stock:Only left:
Description

Sikalastic® M 205 is a low-VOC, one-component, moisture-curing polyurethane base coat designed for use in Sikalastic® Traffic 1500 and 2000 Low VOC deck coating systems. It provides strong adhesion, easy application, and reliable performance for waterproofing and protection in pedestrian and vehicular traffic areas.

Features & Benefits

  • VOC Compliant: Environmentally responsible and suitable for low-VOC projects.
  • Excellent Adhesion: Bonds well to concrete, plywood, and various metal substrates.
  • Crack Bridging: Withstands structural movements without cracking.
  • High Flexibility: 800% elongation ensures durability under stress.
  • Labor Efficient: Simple preparation and one-component design reduces on-site labor costs.
  • Versatility: Can be applied to multiple substrates with or without primers (depending on moisture and material conditions).

Technical Data

  • Chemical Base: Single-component, moisture-curing polyurethane
  • Color: Gray
  • Density: ~1.25 kg/L
  • Viscosity: 4,000–9,000 cP (temperature-dependent)
  • Solid Content by Mass: 86%
  • Solid Content by Volume: 83%
  • Hardness: Shore A, 44 (ASTM D 2240)
  • Tensile Strength: 350 psi (2.4 MPa) (ASTM D 412)
  • Elongation: 800% (ASTM D 412)
  • Crack Bridging: No cracking
  • Cure Time: 12–14 hours at 73°F (23°C), 50% RH
  • Shelf Life: 1 year (unopened, stored properly)
  • Packaging: 5-gallon (18.93 L) pails

Recommended Applications

  • Parking garages
  • Balconies and plywood decks
  • Plaza decks
  • Stadiums and arenas
  • Commercial construction and building restoration

Common Substrates

  • Concrete: 21–28 days old, shot-blasted to CSP-3, <4% moisture (no primer), up to 6% with primer Sikalastic® 100 VB
  • Plywood: 23/32" APA-stamped, exterior grade, seams caulked and reinforced
  • Metal: Ferrous, non-ferrous, galvanized, stainless steel (requires SSPC/NACE prep + priming)
  • Existing Coatings: Mechanically abraded, solvent cleaned, compatibility testing recommended

Application Details

Surface Preparation:

  • Concrete: Fully cured, structurally sound, clean, dry, shot-blasted.
  • Plywood: Smooth, contaminant-free, caulked seams reinforced with fabric.
  • Metal: Prepare per SSPC/NACE standards; priming required.
  • Existing Coatings: Abrade, solvent wipe, prime if needed.

Priming: Not required for concrete (<4% moisture) or dry plywood. Required for metal, damp concrete, or existing coatings (use Sikalastic® EP Primer/Sealer, Sikadur®-22 Lo-Mod FS, or Sikalastic® 100 VB).

Mixing: Use a slow-speed mechanical mixer until uniform. Avoid entraining air.

Application: Apply with notched squeegee/trowel, then backroll. Extend base coat over the entire area. Cure for at least 16 hours at 70°F / 50% RH before overcoating.

Limitations:

  • Do not apply on damp, frosted, or rain-exposed surfaces.
  • Not UV stable — must be top coated.
  • Avoid continuous immersion or ponding water.
  • Protect from rain within 8–12 hours after application.