Product Data Sheet
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Sikagard®-550 W Elastocolor

Low-VOC Elastomeric Wall Coating

Sikagard® 550W Elastocolor is a low-VOC, elastomeric, crack-bridging, anti-carbonation, acrylic protective coating. Sikagard® 550W Elastocolor provides protection to reinforced concrete from the ingress of carbon dioxide and other aggressive gasses. It offers high resistance to chlorides and other waterborne salts and excellent UV light resistance. Sikagard® 550W Elastocolor will not act as a vapor barrier and will enhance the appearance of the structure.

  • Can bridge dynamically moving cracks.
  • Excellent carbonation barrier.
  • Vapor permeable.
  • Provides resistance to weathering and frost.
  • Crack bridging properties maintained at low temperatures.
  • Excellent long term UV light resistance.
  • Can be applied by brush, roller, or airless spray.
  • Good color stability.
  • Extremely resistant to dirt pick up and mildew.
  • Non-flammable as a system.
  • Easily maintained silk finish.
  • Low-VOC (SCAQMD compliant)
Product Data Sheet
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Usage

Protective, crack-bridging coating for concrete, mortar, stucco, masonry, and exterior finishing systems subject to cracking/dynamic movement. For use on building and civil engineering structures subject to cracking or as the top coat in complete repair and protection systems.  

Advantages

  • Can bridge dynamically moving cracks.
  • Excellent carbonation barrier.
  • Vapor permeable.
  • Provides resistance to weathering and frost.
  • Crack bridging properties maintained at low temperatures.
  • Excellent long term UV light resistance.
  • Can be applied by brush, roller, or airless spray.
  • Good color stability.
  • Extremely resistant to dirt pick up and mildew.
  • Non-flammable as a system.
  • Easily maintained silk finish.
  • Low-VOC (SCAQMD compliant)

Packaging

5 gallon pail

Color

469 standard colors. Custom color-matching available.

Product Details

Product Information

Shelf Life

2 years in original unopened container

Storage Conditions

Store dry at 40°-95°F (4°-35°C) Condition material to 60°-75°F (15°-25° C) before using. Protect from freezing. If frozen discard.

Solid content by mass

62%

Solid content by volume

55%

Volatile organic compound (VOC) content

12.4 g/l
Technical Information

Tensile Strength

0°F (-17°C)

73°F (23°C)

Strength

1100 psi

200 psi

Elongation at Break

225%

625%

Crack Bridging Ability

Static

30 mils (0.75 mm)

Dynamic

12 mils (0.3 mm)

Permeability to Water Vapor

14.5 perms

(ASTM E-96)

Diffusion Resistance to Water Vapor

µ - value H2 O (diffusion coefficient)

2,146

SdH2 O (equivalent air thickness)

2.6 ft. (0.8 m)

Lap Shear Strength

µ - value CO2 (diffusion coefficient)

214,000

R (equivalent air thickness)

299 ft. (91 m)

Sc (Equivalent concrete thickness)

9 in. (23 cm)

Resistance to Weathering

10,000 hrs.

Excellent, no chalking or cracking

Application

Application Information

Pot Life

Indefinite, provided proper care is taken in protecting the system from moisture, freezing, contamination, or evaporation

Waiting / Recoat Times

45°F (8°C)68°F (20°C)85°F (30°C)

Sikagard® 552W Primer+Sikagard® 550W

24 hrs

12 hrs

6 hrs

Sikagard® 550W

12 hrs

8 hrs

6 hrs

Rain resistant (at 75% R.H.)

24 hrs

4 hrs

2 hrs

(Note: Over coating old coatings will increase the waiting times by 100%)
Consumption

Coverage

Theoretical yield per coat: 100 ft²/gal/coat. Recommended ‘wet’ film thickness: 16 mils/coat. Recommended ‘dry’ film thickness: 8 mils/coat. Normal coating system is two coats at a total dry film thickness of 16 mils. Consumption is dependent on porosity of substrate. In addition, allowance must be made for surface profile, unavoidable variation in applied film thickness, loss and waste. Sikagard® Elastic Base Coat can be used as a first coat in a two coat system of Sikagard® 550W Elastocolor.
Application steps

SUBSTRATE PREPARATION

All surfaces to be coated must be dry, clean, sound, and frost free with curing compound residues and any other foreign matter removed.An open textured sandpaper like surface is ideal (CSP-3). Where necessary, surfaces should be prepared mechanically by blast cleaning or high speed pressure waterjetting.Allow adequate time for drying. Bug holes, cracks or irregularities of substrate should be filled and leveled with SikaTop®, SikaRepair®, SikaQuick® or acrylic surface fillers as appropriate. Cracks 1/32” or greater should be routed and sealed with a polyurethane sealant before coating.

Priming: All porous areas or concrete with excessive porosity should be primed using Sikagard® 552W Primer or SikaLatex® R to allow easy application of Sikagard® 550W Elastocolor.

MIXING

Stir the coating to ensure uniformity using a slow speed (400-600 rpm) drill and 1/2” jiffy style mixing paddle. To minimize color variation when using multiple units, blend two pails of Sikagard® 550W Elastocolor. Use one pail and maintain the second pail to repeat this procedure (boxing) for the entire application.

APPLICATION

Any areas of glass or other surfaces should be masked. Recommended application temperatures (ambient and substrate) 45°-95°F (7°-35°C). Sikagard® 550W Elastocolor can be applied by brush, roller, or spray over entire area moving in one direction. Allow a minimum of two hours prior to re-coating. At lower temperatures and high humidity, waiting time will be prolonged. At higher temperatures, work carefully to maintain a wet edge. As with all coatings, job site mock-ups should always be completed to confirm acceptability of workmanship, material and aesthetics.

NOTE: To achieve a dry film thickness of 16 mils, two coats should be anticipated. For maximum adhesion, (especially on porous substrates) the use of Sikagard® 552W is recommended. Sikagard® 552W primer can be applied by brush or roller. Brushing provides more even and pore free coats and better penetration.

 

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