ALKA 205

1-Component Transparent and Clear, Solvent-Based, UV-Stable Polyurethane

UV Stable Polyurethane Coating

Alka 205 is a one component, clear, solvent-based UV-stable moisture-cure polyurethane coating system designed for concrete floor coatings. When cured, UV seal produces a high gloss, extremely tough and hardwearing film with excellent resistance to UV and yellowing.


As a clear topcoat for :

  • Decorative Flake systems,
  • Epoxy self-levelling floor toppings,
  • Exterior and interior decorative flooring finishes.
  • Garage floors,
  • Warehouses
  • Patios,
  • Balconies,
  • Showrooms & Shops.


  • Extermely bright, clear and transparent,
  • Low viscosity,
  • Tough & Durable,
  • Excellent bond strength,
  • Easy application/Can be applied by brush or roller,
  • Multi-purpose use,
  • Protects new concrete from abuse,
  • Rejuvenates worn surfaces, to a smooth finish,
  • Designed to take heavy loads,
  • Available in bulk quantities,
  • Good mechanical resistance,
  • Good chemical resistance,
  • Short waiting times before subsequent coatings.


10 Kg 


– clear & transparent.

Shelf life: 12 months

Storage conditions

Store away from direct sunlight and away from naked flames, sparks and heating.

Flash point >25 C

Density: 1.0 Kg/L

Layer thickness
Recommended coating thickness is approximately 50 microns per coat

Pot Life (at 25 C)
approximately 25 minutes

Curing time (at 25 C)
Touch Dry Time: 30 minutes
Re-coat able: 4-8 hours
Light traffic: 3 days
Full cure: 7 days.

Approximately 0.1 – 0.15 kg/m2 (approx. 5-8 m2/litre) per coat depending on substrate conditions. As a concrete sealer two coats are normally required to achieve a total thickness of 50 microns.


Alka 205 can be applied by brush, roller or spray.

Please bear in mind that Alka 205 has a special solvent. Normal Xylene solvents must not be used for thinning.

Xylene can be used for cleaning tools and equipment before the mixed compound begins to harden. Once cured, It can only be removed mechanically.

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