Size: 15.12 L (4 gal)
Sikafloor-1620 is a state of the art, multi-component, high solids, low viscosity, moisture tolerant, epoxy primer that forms a dense, low permeability film on concrete substrates to significantly reduce moisture vapour transmission in compliance with ASTM F3010.Sikafloor-1620 contains a blue trace dye that acts as a visual aid to ensure complete coverage.
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Material Use:
Sikafloor-1620 is a high-solids, low-viscosity, moisture-tolerant epoxy primer used as a moisture vapor control layer on concrete substrates. It is designed to significantly reduce moisture vapor transmission and is suitable for use beneath Sikafloor, Sikagard, and Sikalastic resin flooring systems.
System Components:
- Primer: Sikafloor-1620 (applied as a neat coat with no aggregate broadcast)
- Moisture Barrier (if needed): Sikafloor-81 EpoCemCA (used when substrate moisture exceeds 6%)
- Topcoat Options: Any Sikafloor, Sikagard, or Sikalastic resin systems as specified
Applications:
- Suitable for use in interior environments on high-moisture concrete substrates
- Used under resin flooring systems to meet ASTM F3010 moisture mitigation standards
- Approved for use in food processing facilities (CFIA and USDA compliant)
Application Details:
- Mix Ratio: A:B = 3:1 by volume
- Coverage: ~106 ft/US gal at 15 mils wet film thickness
- Installation Temperature: 1030 C (5086 F)
- Humidity Limit: Max 85% RH during application and cure
- Substrate Moisture Limit:6% by weight (Tramex CM/E meter)
- If>6% Moisture: Use Sikafloor-81 EpoCemCA then coat with Sikafloor-1620
- Pot Life: ~38 minutes at 20 C (68 F)
- Cure Time:
- Foot traffic: 836 hours depending on temperature
- Full cure: 410 days
- Overcoating Window:
- At 20 C (68 F): 8 to 48 hours
- Surface must be sanded if max recoat time exceeded
Special Notes:
- Sikafloor-1620 is not UV stable and will discolor over time if exposed; it must be overcoated.
- Not suitable for exterior slabs exposed to freeze-thaw cycles or extreme thermal shock.
- Not a finish coatonly a primer for moisture control.
- Do not apply to polymer-modified cement mortars or ASR-affected substrates.
- Avoid air flow disturbances and contamination during cure.
- Must be mechanically mixeddo not hand mix or thin.
