Sikafloor®-264 ECF

12 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

Please consult Sikafloor Technical Services.

Full electrical properties reached within 10 days of application (With heel straps integral 1 megohm resistor)

2:1 by volume (Mix full unit only)

Minimum/Maximum 50°/85 °F (10°/30°C). Substrate temperature must be at least 5 °F (3 °C) above measured Dew Point. Mixing and Application must adhere to Material, Ambient and Substrate temperatures listed above or a decrease in product workability and slower cure rates will occur.

Sikafloor®-264 ECF must be applied and distributed immediately after mixing.
*Do not apply after indicated Pot Life is exceeded.

Electrical Properties: Full electrical properties reached within 10 days of application at 73 °F (23 °C) and 50 % R.H

4.50 mixed gallons (approximate coverage) at: 16 mils = 450 ft² (42 m²)
Sikafloor®-264 ECF should be applied at 15 - 18 mils.
Product will lose ESD properties if applied at excessive thickness. Do not exceed the recommended thickness.

Surface must be clean, sound and dry. Remove dust, laitance, grease, curing compounds, preparation bond inhibiting impregnations, waxes, and any other contaminants. All projections, rough spots, etc. should be removed to achieve a level surface prior to the application. Concrete should be cleaned and prepared to achieve a laitance-free and contaminant-free, open, textured surface by shot blasting or equivalent mechanical means (CSP-3 to CSP-4 as per ICRI guidelines). Sweep and vacuum any remaining dirt and dust with a wet/dry vacuum. Removing residual dust will help ensure a tenacious bond between the primer and substrate. Whenever “shot-blasting” is utilized, be careful to leave concrete with a uniform texture. “Overblasting” will result in reduced coverage rates of the primer and/or subsequent topcoats. The shotblast pattern may show through the last coat, known as “tracking”. The compressive strength of the concrete substrate should be at least 3,500 psi (24 MPa) at 28 days and at least 215 psi (1.5 MPa) in tension at the time of application. For other substrates, please contact Sikafloor Technical Services.

Concrete Priming
Use of Primer on concrete substrate and/or isolation layer on existing ESD or Epoxy coating is required. Prime with either Sikafloor®-160, Sikafloor®-161, Sikafloor®-2540 or Sikafloor®-1620. Allow the primer to cure until tack free before applying subsequent coats. Ensure that the primer is pore-free, pinhole-free and provides uniform and complete coverage over the entire substrate. Please refer to the individual most current and respective Product Data Sheet for specific and detailed information.

Electrical Grounding
The installation of an isolation layer/primer to seal the substrate is required. 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 of flooring is sufficient for proper dissipation of static electricity. Adhesive backed copper grounding tape may be 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®-264 ECF coating 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®-222W conductive primer.

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 4 in. (10.2 cm) portion of the copper tape is adhered to the primed floor surface. 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. 16 or 18 gage 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 4 in. (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.

Conductive Primer

Sikafloor®-222W conductive primer is used in conjuction with Sikafloor®-264 ECF: test the primed surface for conductivity prior to the application of Sikafloor®-264 ECF. A value of < 5.0x10E3 ohms per ANSI/ESD STM7.1/ASTM F-150 must be achieved. Do not use with Sikafloor®-220W conductive primer. Use only Sikafloor®-222W conductive primer.

Mix full units only
Premix each component separately. Stir Component A container with a long margin tool to ensure contents are evenly distributed scraping the sides, corners and bottom of the pail. A Jiffy-type mixing paddle with a variable speed mixing drill is used to premix the Component A, then add the Component B to the pigmented Component A and mix for 3 minutes at a moderate speed (300 rpm), scraping the container sides,
bottom, and corners with a flat or straight edge trowel at least once to ensure complete mixing. Do not strain material. Straining will remove conductive element. Do not mix more material than can be applied within the working time limits (i.e. Pot Life) at the actual field temperature. Sikafloor®-264 ECF must be placed and distributed on the application surface immediately after mixing.

The Sikafloor®-264 ECF should be applied with a notched squeegee over a smooth primed substrate. The notched squeegee should be 18 to 24 inches (45.6 to 60.1 cm) long with 1/16 (1.6 mm) notches at 1/4 inch (6.4 mm) intervals. This type of squeegee will apply sufficient material to achieve 15 - 18 wet mils when back rolled. Back rolling is typically done with a 9 inch (22.8 cm) or 18 in (45.6 cm) wide, 3/8 inch (9.5 mm) short nap, solvent resistant roller cover. Back roll the Sikafloor®-264 ECF to level the material applied. Over-rolling and late back rolling may cause bubbling and leave roller marks. Divide the floor into sections that can be completed without stopping. When ending a section, tape it off to form a clean edge for an adjacent section.

The recommended application procedures are:

1. Take one 4.5 gallon pail of the mixed Sikafloor®-264 ECF and start at one end of the section to be coated. Trim the walls and/or obstructions in the immediate area where the coating will be applied. Pour the Sikafloor®-264 ECF in a line approximately 1 ft (0.3 m) from the wall or starting line along the entire width of the section to be coated.
2. The person using the squeegee can then make one pass along the wall or starting line, turn and come back making a second pass adjacent to the first pass. Next, use the rollers to level the Sikafloor®-264 ECF squeegee applied material. One person can roll apply a 15 to 20 ft (4.6 - 6.1 m) wide section. Do this as quickly as possible.
3. Pour another line of Sikafloor®-264 ECF approximately 1 ft (0.3 m) from the rolled area and repeat step 2. The rolling personnel should make sure they are not leaving puddles or thick sections of Sikafloor®-264 ECF at the junction of the previously rolled and freshly applied Sikafloor®-264 ECF.
4. Follow these procedures until the section is completed. If the work must stop for any reason, use a tapeline as a breaking point.