Sikafloor®-340 ESD

Aliphatic Urtehane

3 months from the date of production. Protect from freezing.

Original, unopened and undamaged sealed packaging, in dry conditions at temperatures between 40° and 90°F (+4° and +32°C). Always refer to packaging.

Readings may vary depending on ambient conditions (e.g. temperature, humidity) and measurement. Property tested

Precondition material for at least 24 hours between 65° to 75°F (18° to 24°C).

50°F (10°C) min. / 86°F (30°C) max.

Minimum ambient humidity 30%
Maximum ambient humidity 75% (during application and curing)

Beware of condensation. The substrate and uncured floor must be at least 5˚F (-15°C) above the dew point to reduce the risk of condensation, which may lead to adhesion failure or “blushing” on the floor finish.

50°F (10°C) min. / 85°F (30°C) max.

Moisture content of concrete substrate must be ≤ 4% by mass (pbw – part by weight) as measured with  a Trimex® CME/CMExpert type concrete moisture meter on mechanically prepared surface according to this product data sheet (preparation to CSP-3 to CSP-4 as per ICRI guidelines). Do not apply to concrete substrate with moisture levels > 4% mass (pbw – part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter. If moisture content of concrete substrate is > 4% by mass (pbw – part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter, use Sikafloor®-1620 or Sikafloor®-22NA or Sikafloor®-24 NA PurCem.

When relative humidity tests for concrete substrate are conducted per ASTM F2170 for project specific requirements, values must be ≤ 85%. If values are > 85% according to ASTM F2170 use Sikafloor®-1610 or Sikafloor®-22 NA PurCem or Sikafloor®-24 NA PurCem.

ASTM F2170 testing is not a substitute for measuring substrate moisture content. Use aTramex® CME/CMExpert type concrete moisture meter as described above.

Sikafloor®-340 ESD must be applied and distributed immediately after mixing. Do not apply if indicated pot life is exceeded. End of pot life is not visible.

Before applying second coat of Sikafloor®-340 ESD allow:

Theoretical coverage for 4.75 gallon unit = 1,900 ft² (~ 176.5 m²) per coat at 4 wet mils (~ 100 µm wet film thickness).
Sikafloor 340 ESD system requires two (2) coats. Do not apply in single coat.

Mix full units only
Sikafloor®-340 ESD must be applied with the full addition of the anti-slip additive.

                       
Pre-mix Component D (5 gallon pail) with a low speed drill (200 - 400 rpm) for a minimum of 1 minute before proceeding. A jiffy-type mixing paddle with a variable speed mixing drill is then placed in the Component D (5 gallon) container and while running add the Part A Resin and ESD Additive (2 cans) to the vortex of the mix. Then add the Component B to the pigmented Components A+D and mix for 3 minutes at a moderate speed (300 rpm), scraping the container sides, bottom, and corners with the mixer. Add slip resistant additive Part E (required) (2 cans) and mix for one minute at a moderate speed, scraping the container sides, bottom, and corners with the mixer. Do not mix more material than can be applied within the working time limits (i.e. Pot Life) at the actual field temperature.

The floor must be divided into sections (at expansion joints or doorways when possible) that can be completed without stopping. When ending a section, tape it off to form a clean edge for an adjacent section. The Sikafloor®-340 ESD must be applied with a 3/8” nap roller and roller trays. 18 inch (46 cm) roller assemblies and trays are preferred. The roller should be wet in the tray and  the excess coating is removed by lightly rolling in the tray so as to avoid drips. Apply 3 pairs of 6 - 8 Ft (approx. 1.80 m - 2.40 m) long paths on to the floor. Spread the material with roller passes perpendicular to the paths of coating. It is extremely important to apply the coating at a rate of 4 - 5 mils (approx. 100 µm - 130 µm) to achieve proper appearance, texture, and color development, and consistent ESD properties.

If areas are too thick, the coating may be too soft, if too thin, the coating will appear very flat in sheen and may exhibit poor electrical properties. Work evenly to avoid late “tie-in” and re-rolling to adjacent previously  applied material; Doing so may result in color variations. It is also very important to remix the material often with the roller in the tray to keep the Non-Slip Additive from settling.

Electrical Grounding                      

The installation of an isolation layer/primer to seal the substrate is required. A high degree of ESD grounding control may be achieved with ESD top coats without direct connection to an earth grounding point. For applications that are more critical or per project specifications, it is recommended that the various coatings be applied in direct, uninterrupted contact with properly prepared grounding points. Metal floor joints, metal equipment bases and steel columns or posts may be used if they have been electrically tested to confirm permanent continuity with an earth ground.

Generally, a minimum of one grounding point per every 1,000 square feet (approx. 100 m²) of flooring is sufficient for proper dissipation of static electricity. Adhesive backed copper grounding tape is used as a grounding point. Copper tape can also be used to bridge control joints around columns or different concrete slabs. Copper tape and the Sikafloor®-340 ESD cannot be expected to maintain integrity over expansion joints that experience wide movement. Embedded grounding points, such as copper tape, grounding snaps, etc, must be placed on top of a primer/isolation layer prior to installation of Sikafloor®-340 ESD.

Methods of installation include, but are not limited to, the following techniques:

1. Use the copper tape to make an electrical connection with the green wire or grounding portion of an electrical outlet. A minimum 4 inch. (10.2 cm.) portion of the copper tape is adhered to the floor (cured primer or directly beneath the first coat of Sikafloor 340 ESD). If using a conductive primer, the copper tape must be installed under the conductive primer. Run the remaining tape up the wall and attach it to the electrical outlet. A variation of this technique involves dropping a No. 10 or 12 copper wire, inside the wall from any convenient ground bus so that the wire  emerges at the floor/wall junction. At this point, a small hole cut into the drywall or chipped out of the concrete to allow the copper wire to emerge.

The copper grounding strip is intertwined with, or soldered to, the stranded copper wire. If intertwined, use a conductive adhesive tape to secure the copper tape with the copper wire. Insert the connection of the copper tape and wire into the wall. The balance of the grounding  strip, typically A 4 inch. (10.2 cm.) is then adhered to the floor.

2. The copper tape can be used to make ground connections with steel columns. The copper tape is adhered to the floor and run up onto the lightly sanded steel column or base. Drill and tap a hole into the steel column or base secure the copper tape using a machine screw and washer.

Sweep up spill and place in closed container. Dispose of in accordance with applicable local, state and federal environmental regulations. Uncured materials can be removed with approved solvents.