Sikafloor®-1620
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Sikafloor®-1620 is a one coat moisture vapor control clear epoxy primer for superior penetration and adhesion to concrete. Sikafloor®-1620 specially formulated to treat high moisture concrete floors for Sikafloor® epoxy and urethane coatings, as well as broadcast and troweled systems.
- Perm rating under 0.1 Perm
- One coat application
- Resistant to substrate out gas bubbling
- Resistant to moisture vapor transmission
- Ease of application
- Low VOC
- Exceeds ASTM F3010
Usage
Sikafloor®-1620 should be considered where ≤ 6 % mass (pbw – part by weight) is measured on concrete substrate with Tramex® CME CMExpert type concrete moisture meter.Advantages
- Perm rating under 0.1 Perm
- One coat application
- Resistant to substrate out gas bubbling
- Resistant to moisture vapor transmission
- Ease of application
- Low VOC
- Exceeds ASTM F3010
Packaging
| Component A: 3 US gal. (11.3 L) | Component A: (3) 50 US gal. (189.2 L) |
| Component B: 1 US gal. (3.7 L) | Component B: 50 US gal. (189.2 L) |
| Components A+B: 4.0 US gal. (15 L) | Components A+B 200 US gal. (757.8 L) |
Color
Clear
Product Details
Shelf Life
2 years in original unopened container under proper storage conditions
Storage Conditions
Store dry between 40 °F (4 °C) and 90 °F (32 °C).
Volatile organic compound (VOC) content
10.5 g/l A+B Combined
Shore D Hardness
| 83 | ASTM D2240 at 73°F (23°C) and 50% R.H |
Compressive Strength
| 14,385 Psi (99 MPa) | ASTM D695 at 73°F(23°C) and 50% R.H |
Flexural Strength
| 12,154 Psi (83.8 MPa) | ASTM D790 at 73°F(23°C) and 50% R.H |
Tensile Strength
| 4,931 Psi (34 MPa) | ASTM D638 at 73°F(23°C) and 50% R.H |
Tensile Adhesion Strength
| 425 Psi (2.93 MPa) (Concrete failure) | ASTM D4541 at 73°F(23°C) and 50% R.H |
Water Absorption
| 0.0029% (24hr) 0.007% (7days) | ASTM D570 at 73 °F (23°C) and 50 % R.H |
Permeability to Water Vapor
| 0.06 perms (15Mils) | ASTM E-96 at 73 °F (23°C) and 50 % R.H |
Application
Mixing Ratio
3 : 1 by volume.
Ambient Air Temperature
Minimum/Maximum 50/85˚F (10/30˚C)
Substrate Temperature
Minimum/Maximum 50/85˚F (10/30˚C)
Pot Life
| Material Temperature | Time |
| 50 °F (10 °C) | ~ 50 minutes |
| 68 °F (20 °C) | ~ 25 minutes |
| 86 °F (30 °C) | ~ 15 minutes |
Cure Time
| Ambient & Substrate Temperature | Minimum | Maximum |
| 50 °F (10 °C) | 24 hours | 24 hours |
| 73 °F (23 °C) | 6 hours | 8 hours |
| 95 °F (35 °C) | 3 hours | 5 hours |
Waiting / Recoat Times
Before applying Sikafloor® Epoxy or Polyurethane on Sikafloor®-1620 allow:
| Ambient & Substrate Temperature | Minimum | Maximum |
| 50 °F (10 °C) | 24 hours | 24 hours |
| 73 °F (23 °C) | 6 hours | 8 hours |
| 95 °F (35 °C) | 3 hours | 5 hours |
Coverage
105 - 135 ft2/ mixed US gal.(2.75 - 3.32 m2/ L) at 12–15 mils (0.30-0.38 mm) wet film thickness (w.f.t).
MIXING
Each component must be pre-mixed separately to ensure product uniformity. Empty Component B (Hardener) in the correct mix ratio into Component A (Resin). Mix the combined components for at least 3 minutes using a low speed drill (300–450 rpm) and Exomixer or Jiffy type paddle suited to the volume of the mixing container to minimize entrapped air. Be careful not to introduce any air bubbles while mixing.
Make sure the contents are completely mixed to avoid any weak or partially cured spots in the coating. During the mixing operation, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once to ensure complete mixing.
Do not mix more material than can be applied within the working time limits (i.e. Pot Life) at the actual field temperature.
APPLICATION
Apply primer by squeegee at the rate of 105 - 135 ft2/ mixed US gal.(2.75 - 3.32 m2/ L) ( at 12–15 mils (0.30-0.38 mm) wet film thickness (w.f.t). Back roll with 3/8 inch (10 mm) nap, solvent-resistant roller coverCoverage will vary depending on the porosity of the prepared substrate.
Do not apply by dipping roller into mixing container. Pour a bead of product in the form of a ribbon on the substrate to be coated and then spread with squeegee and back roll. Ensure that the coating is pore-free and pinhole-free and provides uniform and complete coverage over the entire concrete substrate. If necessary, apply an additional primer coat to ensure that the coating is pore-free and pinhole-free and provides uniform and complete coverage over the entire concrete substrate.