Sikafloor®-261 CA

Sikafloor®-261 CA is a two-component, solid colour, high solids, silicone-free, low-viscosity, self-priming, glossy epoxy resin available in an unlimited colour range.

Use Sikafloor®-261 CA as a seamless, high build, smooth coating for light to medium duty traffic areas. Sikafloor®-261 CA is a general service epoxy coating that demonstrates good mechanical and chemical resistance. Final surface appearance options include: unlimited colour selection and integral cove base. Sikafloor®-261 CA is also used as a resin component (primer, binder and top coat) for high performance Sikafloor® Multidur Systems.

Recommended uses

Food service areas Clean rooms and sanitary areas Commercial and industrial facilities Institutional and recreational facilities Light to medium duty manufacturing areas Processing and warehousing Retail stores Theatres Aircraft hangars

Features

• Durable, impermeable and seamless
• Good mechanical and chemical resistance
• Glossy aesthetic finish
• Unlimited colours, no minimum required
• Easily cleaned and maintained

Packaging

Components A+B: 15.14 L (4 US gal) unit (NEW FORMAT) Component A: 10.08 L (2.67 US gal) Component B: 5.06 L (1.33 US gal) Components A+B: 30 L (7.9 US gal) unit Component A: 19.91 L (5.27 US gal) Component B: 9.99 L (2.63 US gal)

ENVIRONMENTAL INFORMATION

Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations Conformity with LEED®v4 EQ Credit: Low-Emitting Materials Conformity with LEED®v4 MR Credit (Option 2): Building Product Disclosure and Optimization - Material Ingredients Conformity with LEED®v4 MR Credit (Option 2): Building Product Disclosure and Optimization - Sourcing of Raw Materials

APPROVALS / CERTIFICATES

Meets the requirements of CFIA for use in food plants.

Shelf Life

2 years when stored in original, unopened packaging.

Storage Conditions

Store in a dry place, protected from freezing at a temperature between 5 °C and 32 °C (41 °F and 90 °F).  Protect from freezing. If Sikafloor®-261 CA has frozen, contact Sika Canada.

Volatile organic compound (VOC) content

< 50 g/L

Viscosity

A+B: ~550 cPs

Shore D Hardness

~76 (ASTM D2240)

Abrasion Resistance

~0.11 g loss: CS-17 wheel /1000 cycles/1000 g

Resistance to Impact

~5.88 joules (~4.33 ft lb) (ASTM D2794)

Compressive Strength

~56 MPa (~8122 psi) (ASTM D695)

Tensile Strength

~7.4 MPa (~1073 psi) (ASTM D638)

Pull-Off Strength

> 2.5 MPa (> 363 psi) (substrate failure) (ASTM D7234)

Thermal Compatibility

Passes (ASTM C884)

Coefficient of Thermal Expansion

~1.27 x 10 -4 mm/mm/°C (~0.70 x 10 -4 in/in/°F) (ASTM D696)

Resistance to Fire

0 (FSR) Flame Spread Rating 15 (SDC) Smoke Developed Classification (CAN/ULC S102.2)

Chemical Resistance

Consult Sika Canada

Microbiological Resistance

Rated 1 - resistance to fungi (traces growth) (ASTM G21) Rated 10 - resistance to mold growth (highest resistance) (ASTM D3273) (Special order grade)

Coefficient of Friction

~0.32 Wet (smooth high gloss) (ANSI A137.1 / ANSI A326.3) ~0.93 Dry (smooth high gloss) (DCOF - BOT 3000e)

Indentation

~8.82 % (returns to profile) (MIL-PRF-24613)

Service Temperature

Minimum 0 °C (32 °F)    Maximum 50 °C (122 °F)

Water Absorption

~0.3 % (ASTM D570)

Mixing Ratio

A:B = 2:1 (by volume)

Product Temperature

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

Ambient Air Temperature

Minimum: 10 °C (50 °F) / Maximum: 30 °C (86 °F) Note: Mixing carried out under conditions where the Sikafloor®-261 CA temperature and ambient temperature are below 18°C (65°F) will result in reduced product workability and slower curing rates.

Relative Air Humidity

Maximum 85 % (during application and curing)

Dew Point

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.

Substrate Temperature

Minimum: 10 °C (50 °F) / Maximum: 30 °C (86 °F) Note: Any attempt to apply Sikafloor®-261 CA at substrate temperature conditions less than 18 °C (65 °F) will result in an increase in viscosity and slower cure rates.

Substrate Moisture Content

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).

Pot Life

250 g (8.8 oz) 10 °C (50 °F) 20 °C ( 68 °F) 30 °C (86 °F) Open time in pot ~60 minutes ~40 minutes ~15 minutes Open time on substrate ~80 minutes ~50 minutes ~35 minutes

Curing Time

10 °C (50 °F) 20 °C (68 °F) 30 °C (86 °F) Foot traffic ~2 days ~1 day ~18 hours Light traffic ~4 days ~2 days ~2 days Full Cure ~10 days ~7 days ~5 days Curing times will vary according to air and substrate temperature and relative humidity. Protect from dampness, condensation and water contact during the initial 72 hour cure period.

Consumption

As a primer 5 m 2 /L - 8 m 2 /L (200 ft 2 /US gal- 325 ft 2 /US gal) at 5 mil - 8 mil w.f.t. Wear coat 1.6 m 2 /L - 3.3 m 2 /L (65 ft 2 /US gal - 135 ft 2 /US gal.) at 12 mil - 25 mil w.f.t. Refresher coat Apply at the same rate as wear coat Note: Actual coverage rates and material consumption will depend upon porosity and profile of substrates. Allowance must also be made for variation in film thickness or number of coats required to achieve opacity with light (i.e., white) or bright colours (i.e., reds and yellows) on dark substrate. Test sections are recommended to establish correct coverage.

SUBSTRATE QUALITY

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. 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®-261 CA.

MIXING

Mixing ratio A:B = 2:1 (by volume) IMPORTANT: Do not hand mix Sikafloor®-261 CA; mechanically mix only. Sikafloor®-261 CA 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®-261 CA 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.

APPLICATION

As a primer: Apply the Sikafloor®-261 CA as a prime coat onto the substrate using a brush, roller or squeegee, at a uniform coverage without puddling. Wear Coat: Once the prime coat is tack free, apply the wear coat using a squeegee or roller and backroll to achieve even coverage.

CLEAN UP

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

Cure time

10 °C (50 °F) 20 °C (68 °F) 30 °C (86 °F) Foot traffic ~2 days ~1 day ~18 hours Light traffic ~4 days ~2 days ~2 days Full Cure ~10 days ~7 days ~5 days

Application temperature

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

VOC

< 50 g/L