Sikafloor 155 WN | MCT CHEMICALS | SIKA PAKISTAN

USES
Sikafloor®-155 WN should only be applied by experienced professionals. It is used for:

• Priming and improving adhesion on properly prepared surfaces such as:
  • New concrete
  • Cementitious screeds
  • Hardened concrete
  • Existing epoxy floor coatings
  • EpoCem leveling layers
• Priming for Sikafloor®-81 EpoCem® and Sikafloor®-82 EpoCem®, Sikafloor®-20N PurCem®, Sikafloor®-21N PurCem®, and other products in the Sikafloor®-Level® range.

CHARACTERISTICS / ADVANTAGES

• Simple and fast to apply
• Ideal for highly absorbent substrates
• Water-based and odorless
• Can be used in unventilated areas
• Excellent bond strength across a wide temperature range
• Environmentally friendly

APPROVALS / STANDARDS

• Certified as synthetic resin screed material under EN 13813:2002 with CE marking.

PRODUCT INFORMATION

• Chemical Base: Water-based epoxy
• Packaging:
  • Part A: 7.5 kg containers
  • Part B: 2.5 kg containers
  • Ready-to-mix units: 10 kg, 30 kg
• Appearance / Colour:
  • Part A: Thick colored paste
  • Part B: Light yellow translucent emulsion
  • Mixed Resin: Oxide red (~ RAL 3009)
• Shelf Life: 12 months from the production date
• Storage Conditions: Store in original, sealed packaging, in dry conditions, at temperatures between +5°C and +30°C
• Density:
  • Part A: ~1.6 kg/l
  • Part B: ~1.1 kg/l
  • Mixed resin: ~1.4 kg/l
• Solid Content:
  • By weight: ~70%
  • By volume: ~56%
• Viscosity: 4,900 mPa·s (+20 °C)

TECHNICAL INFORMATION

• Tensile Adhesion Strength: >1.5 N/mm² (failure in concrete) after 28 days at +23 °C and 50% r.h. (EN 13892-8)

SYSTEM INFORMATION

• Application: Apply 1 to 2 coats of Sikafloor®-155 WN, depending on substrate porosity.

APPLICATION INFORMATION

• Mixing Ratio: Part A : Part B = 3 : 1 by weight
• Consumption:
  • 0.3 – 0.5 kg/m² per coat (2.0 – 3.3 m²/kg per coat)
  • Dilute first coat with 10% water by weight, apply second coat undiluted
• Layer Thickness: 110 – 180 µm per coat (dry film thickness)
• Ambient Temperature: Minimum +10 °C, maximum +35 °C
• Relative Humidity: Maximum 85%
• Dew Point: Ensure substrate and uncured floor are at least 3°C above the dew point to prevent condensation or blooming.
• Substrate Temperature: Minimum +10 °C, maximum +35 °C
• Substrate Moisture Content: Test using Sika®-Tramex meter, CM measurement, or Oven-dry method. Ensure moisture is below 4% for impervious resin finishes.
  • Can be applied on damp green concrete when overcoating with Sikafloor® EpoCem® products, provided there is no standing water.

Pot Life (at 75% relative humidity):

• +10°C: ~180 minutes
• +20°C: ~90 minutes
• +30°C: ~90 minutes

Curing Time (before applying Sikafloor®-81/-82 EpoCem®):

• Substrate Temperature:
  • +10°C: Minimum 12 hours, maximum 72 hours
  • +20°C: Minimum 6 hours, maximum 48 hours
  • +30°C: Minimum 4 hours, maximum 24 hours
• Foot Traffic:
  • +10°C: ~12 hours
  • +20°C: ~6 hours
  • +30°C: ~4 hours

Note: Curing times increase in low temperatures or high humidity. Only apply subsequent coats when the primer is tack-free.