Sikaflex®-2c NS EZ Mix
TWO-COMPONENT, NON-SAG, POLYURETHANE ELASTOMERIC SEALANT
Sikaflex®-2c NS EZ Mix is a two-component, premium-grade, polyurethane-based, elastomeric sealant. It is principally a chemical cure in a non-sag consistency.
- Capable of ± 50 % joint movement
- Chemical cure allows the sealant to be placed in joints exceeding 13 mm (1/2 in) in depth for non-moving joint
- High elasticity with a tough, durable, flexible consistency
- Exceptional cut and tear resistance
- Exceptional adhesion to most substrates without priming
- Available in 35 standard architectural colours
- Colour uniformity assured via Color-pak system
- Non-sag even in wide joints
- Easy to mix
- Paintable with water, oil, and rubber-base paints
- Sikaflex®-2c Booster available for faster cure in cold weather
- Traffic grade available, see Sikaflex®-2c NS EZ Mix TG Product Data Sheet for specifications
Usage
- Intended for use in all properly designed working joints with a minimum depth of 6 mm (1/4 in).
- Ideal for vertical and horizontal applications.
- Can be applied at temperatures as low as +4 °C (39 °F).
- Adheres to most substrates commonly found in construction.
- An effective sealant for use in Exterior Insulation Finish Systems (EIFS).
- Submerged environments, such as canal and reservoir joints.
Advantages
- Capable of ± 50 % joint movement
- Chemical cure allows the sealant to be placed in joints exceeding 13 mm (1/2 in) in depth for non-moving joint
- High elasticity with a tough, durable, flexible consistency
- Exceptional cut and tear resistance
- Exceptional adhesion to most substrates without priming
- Available in 35 standard architectural colours
- Colour uniformity assured via Color-pak system
- Non-sag even in wide joints
- Easy to mix
- Paintable with water, oil, and rubber-base paints
- Sikaflex®-2c Booster available for faster cure in cold weather
- Traffic grade available, see Sikaflex®-2c NS EZ Mix TG Product Data Sheet for specifications
Packaging
5.7 L and 11.4 L units (1.5 and 3 US gal. units)
Color-pak and Sikaflex®-2c Booster sold separately.
Colour
35 standard architectural colours are available. Special colours available on request.
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED® v4 MR Credit (option 1): Building Product Disclosure and Optimization - Material Ingredients
- Conformity with LEED® v4 IEQ Credit: Low-Emitting Materials
- Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization - Sourcing of Raw Materials
APPROVALS / CERTIFICATES
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2-hour UL Fire Rated Joint System Nos. FF-S-1034, FW-S-1020, HW-S-1018, WW-S-1037
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ANSI/NSF Standard 61 approved for potable water contact
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Meets ASTM C920, Type M, Grade NS, Class 25, use T, NT, M, G, A, O
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Meets Federal Specification TT-S-00227E, Type II, Class A
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Meets Federal Specification TT-S-001543A
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Meets Federal Specification TT-S-00230C
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Meets CAN/CGSB 19.24 - M90
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USDA approved
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Canadian Food Inspection Agency (CFIA) acceptance
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Ministry of Transport Québec (MTQ) acceptance
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UL certified to CAN/ULC-S115-05: Standard Method of Firestop Systems and to ANSI/UL 2070: Fire Resistance of Building Joint Systems (FF-S-1034, FW-S-1020, HW-S-1018, WW-S-1037) for use in Canada
Shelf Life
1 year in original, unopened packaging.
Storage Conditions
Store dry at temperatures between +4 °C and +35 °C (39 °F and 95 °F). Condition product between +18 °C and +24 °C (65 °F and 75 °F) before using.
Volatile organic compound (VOC) content
< 64 g/L
Shore A Hardness
25 ± 5 | (ASTM D2240) |
Tensile Strength
0.62 MPa (90 psi) | (ASTM D412) |
Adhesion in Peel
Substrate | Peel Strength | % Adhesion loss |
Concrete | > 2.63 N/mm (> 15 lb/in) | Zero |
Tear Strength
7.88 N/mm (45 lb/in) | (ASTM D624) |
Service Temperature
-40 °C to +77 °C (-40 °F to 170 °F)
Chemical Resistance
Good resistance to water, diluted acids, diluted alkalines, and residential sewage. Consult Sika Canada for specific data.
Resistance to Weathering
Excellent |
Application
Ambient Air Temperature
+4 °C to +38 °C (39 °F to 100 °F)
Substrate Temperature
+4 °C to +38 °C (39 °F to 100 °F)
Sealant should be installed when joint is at mid-range of its anticipated movement.
Curing Rate
Tack-Free | 8-10 hours |
Final cure | 3 days |
Yield
Linear Metre of Sealant per Litre
Depth | ||||
Width mm (in) | 6 (¼) | 13 (½) | 19 (¾) | 25 (1) |
6 (¼) | 24.8 | |||
13 (½) | 12.4 | 6.2 | ||
19 (¾) | 8.3 | 4.1 | 2.8 | |
25 (1) | 6.2 | 3.1 | 2.1 | 1.6 |
32 (1¼) | 5.0 | 2.5 | 1.7 | 1.2 |
38 (1½) | 4.1 | 2.1 | 1.4 | 1.0 |
Depth | ||
Width mm (in) | 32 (1¼) | 38 (1½) |
6 (¼) | ||
13 (½) | ||
19 (¾) | ||
25 (1) | ||
32 (1¼) | 1.0 | |
38 (1½) | 0.8 | 0.7 |
SUBSTRATE PREPARATION
All joint surfaces must be clean, sound, dry and frost-free. Joint walls must be free of oils, tar, asphalt, bitumen, grease, paints, coatings, sealers, curing compound residues, and any other foreign matter that might prevent adhesion. Ideally this should be accomplished by mechanical means. Bond breaker tape or backer rod must be used in bottom of joint to prevent bond.
Priming
Priming is typically not necessary. Most substrates only require priming if sealant will be subjected to water immersion after cure. Testing should be done, however, on questionable substrates, to determine if priming is needed. Contact Sika Canada or consult Sikaflex® Primers Product Data Sheet for additional information on priming.
Note: Most Exterior Insulation Finish Systems (EIFS) manufacturers recommend the use of a primer. When EIFS manufacturer specifies a primer or if on-site bond testing indicates a primer is necessary, Sikaflex®-429 Primer is recommended. On-site adhesion testing is recommended with final system prior to the start of a job.
MIXING
Pour entire contents of Component B into pail of Component A. Add entire contents of Color-pak into pail and mix with a low-speed drill (400 - 600 rpm) and proper mixing paddle. Mix for three (3) to five (5) minutes to achieve a uniform colour and consistency. Scrape down sides of pail periodically. Avoid entrapment of air during mixing.
Note: When mixing in cold weather < +10 °C (50 °F), do not force the mixing paddle to the bottom of the pail. After adding Component B and Color-pak into Component A, mix the top 1/2 to 3/4 of the pail during the first minute of mixing. After scraping down the sides of the pail, mix again for another minute. The paddle should reach the bottom of the pail between the first and second minute of mixing. Scrape down the sides of the pail a second time and then mix for an additional two (2) to three (3) minutes until the sealant is well blended. When using Sikaflex®-2c Booster, add entire contents into Component A prior to mixing.
Note: When mixing 11.4 L (3 US gal.) unit, two containers of Component B and two Color-paks must be used. Colorpak must be used with tint base. For pre-pigmented Limestone, just mix with low speed drill and Sikaflex® paddle (no Color-pak needed).
CLEAN UP
Uncured material can be removed from equipment and tools using Sika® Urethane Thinner and Cleaner. Cured material can only be removed manually or mechanically.