Sikafloor®-270 ESD

• Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations
• Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization - Sourcing of Raw Materials

• Meets the requirements of CFIA for use in food plants.
• Meets ANSI S20.20- 2014 Table 2 Product Qualification when tested in accordance with ANSI/ESD STM 97.1 and ANSI/ESD STM 97.2 when wearing ESD compliant footwear

12 months when stored in original, unopened packaging.

Store in a dry place at a temperature between 5 °C and 32 °C (41 °F and 90 °F).  Protect from freezing. If Sikafloor®-270 ESD has frozen, contact Sika Canada.

≤ 25 g/L

Consult Sika Canada

Full electrical properties reached within 10 days of application.

A:B= 2:1 (by volume)

Condition product between 18 °C and 30 °C (65 °F to 86 °F) before using and during the application.

Minimum: 10 °C (50 °F) / Maximum: 30 °C (86 °F)

Note: Mixing carried out under conditions where the Sikafloor®-270 ESD temperature and ambient temperature are below 18°C (65°F) will result in reduced product workability and slower curing rates.

Maximum 85 % (during application and curing).

Substrate must be at least 3 °C (5 °F) above the Dew Point to reduce the risk of condensation, which may lead to adhesion failure or "blushing" on the floor finish. Be aware that the substrate temperature may be lower than the ambient temperature.

Minimum: 10 °C (50 °F) / Maximum: 30 °C (86 °F)

Note: Any attempt to apply Sikafloor®-270 ESD at substrate temperature conditions less than 18 °C (65 °F) will result in an increase in viscosity and slower cure rates.

Moisture content of concrete substrate must be ≤ 4 % by mass (pbw – part by weight) as measured with a Tramex®CME / CMExpert type concrete moisture meter on mechanically prepared surface according to this product data sheet (preparation to ICRI / CSP 3 - 4). D

IMPORTANT: Do not apply Sikafloor®-270 ESD directly onto concrete substrates. Use of a Sikafloor® adhesion and isolation layer primer and SSikafloor^®-220 W Conductive -intermediate conductive primer coat are required prior to the application of Sikafloor®-270 ESD.

~20 minutes at +23 °C (73 °F) and 50 % R.H.

Note: Care must be taken not to use product beyond its recommended pot life. Material will appear liquid, but is unusable and will result in poor adhesion and or reduced conductivity.

Note: Full electrical properties are reached within approximately 10 days of application at 23 °C (73 °F).

42 m² (~ 452 ft²) per 17 L (4.50 US gal.) unit at 16 mil w.f.t.

NOTE: Do not exceed 20 mil. Product will lose some ESD properties if applied at excessive thickness.  Actual coverage rates and material consumption will depend upon surface porosity, substrate profile and wastage.  Test sections are recommended to establish correct coverage.

Concrete surfaces must be clean and sound. The compressive strength of the concrete substrate should be at least 25 MPa (3625 psi) at 28 days and a minimum of 1.5 MPa (217 psi) in tensile strength, at the time of the application and isolation layer primer.

Substrates must be free of contaminants such as dust, dirt, existing paint films, efflorescence, exudates, laitance, form, hydraulic or fuel oils, brake fluid, grease, fungi, mildew, biological residues or any other contaminants which may prohibit good bond or conditions of the substrate that may reduce the overall performances of Sikafloor®-270 ESD.

Mixing ratio A:B = 2:1 (by volume) 

IMPORTANT: 

• Do not hand mix Sikafloor®-270 ESD; mechanically mix only.  
• Sikafloor®-270 ESD must be applied as supplied. 

Pre-stir Components A and B separately, making sure all solids, are evenly distributed. Empty Component B (Hardener) in the correct mix ratio into Component A (Resin) or empty Component A into a suitably sized and clean pail and add Component B in the correct ratio. Blend the combined components thoroughly at low speed (300 - 450 rpm) for at least three (3) minutes using a drill fitted with an Exomixer® or Jiffy type paddle suited to the dimensions of the mixing container and keep the mixing paddle in the mix to avoid entrapping air. Take care 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 attempt to attend to unmixed material that may gather on the sides of the mixing container while mechanical or electrical parts are in motion. When completely mixed, Sikafloor®-270 ESD should be uniform in appearance and consistency.

Note: Do not mix more material than can be applied within the working time limits (i.e., Pot Life) at the actual field temperature.

Adhesion and Isolation Layer Primer:

Use of Sikafloor^® epoxy primer on concrete substrates and/or as an isolation layer on existing ESD or epoxy coatings is required. Prime with either Sikafloor^®-156^CA, Sikafloor^®-1620 or Sikafloor^®-261^CA.  Allow the primer to cure (varies with temperature and humidity) until tack-free before applying subsequent coats. Ensure that the primer is pore- and pinhole-free and provides uniform and complete coverage over the entire substrate. Please refer to the individual most current and respective selected Sikafloor^® primer Product Data Sheet for specific and detailed information.

Electrical Grounding: The installation of an adhesion and isolation layer primer to seal the substrate is required. Embedded grounding points, such as copper tape, grounding snaps, etc, must be placed on top of the cured adhesion and isolation layer primer prior to installation of Sikafloor^®-220 W Conductive primer. Sikafloor^®-220 W Conductive primer coating must 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. A minimum of one (1) grounding point per every 93 m² (1,000 ft²) of flooring should be established, with a minimum of two (2) ground connections for any isolated area less than 93 m² (1,000 ft²) in order to achieve proper dissipation of static electricity. Adhesive backed copper grounding tape can be used as a grounding point. Copper tape can also be used to bridge non moving contraction joints, isolation joints around columns or construction joints between different concrete slabs. Copper tape and Sikafloor®-270 ESD coating cannot be expected to maintain integrity over cracks and expansion joints that experience wide movement.

Methods of Grounding:

Installation methods include, but are not limited to, the following techniques:
1. Use copper tape to make an electrical connection with the green wire or grounding portion of an electrical outlet. A 10.2 cm (4 in) portion of the copper tape is adhered to the cured adhesion and isolation layer primer directly beneath the first coat of Sikafloor^®-220 W 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 100 mm (4 in) is then adhered to the primed floor.

2. The copper tape can be used to make ground connections with steel columns. A 100 mm (4 in) portion of copper tape is adhered to the cured adhesion and isolation layer primer with remaining tape run up onto a 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.

IMPORTANT:  All electrical grounding and associated electrical work should be undertaken and assessed by suitable trained, qualified and certified electrical personnel.

Intermediate Conductive Primer Coat:

Only start application of Sikafloor^®-220 W Conductive primer after the adhesion and isolation layer primer coat has dried tack-free, otherwise there is a risk of wrinkling or impairing conductive properties. Grounding points must be installed before the application of SSikafloor^®-220 W Conductive primer.

Mix and apply Sikafloor^®-220 W Conductive primer coating by brush and 10 mm (3/8 in) nap roller at a uniform coverage rate of 6.6 m²/L to 9.8 m²/L (267 ft² US gal. to 401 ft² US gal.) at 4 mil to 6 mil w.f.t. 

Avoid puddling; areas too thick, may cure 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 colour variations. Consult the most current Sikafloor^®-220 W Conductive Product Data Sheet for additional detailed installation instructions.

NOTE: Once cured, test the applied Sikafloor^®-220 W Conductive - intermediate conductive primer coating for conductivity prior to the application of Sikafloor®-270 ESD.

ESD Body Coat:

Sikafloor®-270 ESD should be applied with a notched squeegee over a uniform, smooth Sikafloor^®-220 W Conductiveprimer substrate. The notched squeegee should be 450 mm to 600 mm (18 in to 24 in) long with 1.6 mm to 3.2 mm (1/16 in to 1/8 in) notches at 6.4 mm (1/4 in) intervals. Typically this type of squeegee used by an experienced applicator will apply sufficient material to achieve 15 wet mil to 18 wet mil thickness when back rolled. Back rolling is typically done with a 22.8 cm (9 in) or 450 mm (18 in) wide, 10 mm (3/8 in) short nap, solvent resistant roller cover. Back roll the Sikafloor®-270 ESD 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, straight edge for an adjacent section.

Recommended application sequence (1 to 4):

    
1) Take one 17 L (4.50 US gal.) unit of the mixed  Sikafloor®-270 ESD 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®-270 ESD in a line approximately 300 mm (1 ft) 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®-270 ESD squeegee-applied material. One person can typically roll apply a 4.6 m to 6.1 m (15 ft to 20 ft) wide section. Do this as quickly as possible.

3) Pour another line of Sikafloor®-270 ESD approximately 300 mm (1 ft) from the rolled area and repeat step 2. The rolling personnel should make sure they are not leaving puddles or thick sections of Sikafloor®-270 ESD at the junction of the previously rolled and freshly applied Sikafloor®-270 ESD.

4) Follow these procedures until the section is completed. If the work must stop for any reason, use a tapeline as a breaking point.

Clean all tools and equipment with a non-flammable solvent. Once hardened, product can only be removed mechanically.