Polyurethane - 2 Component Pedestrian Traffic Coatings - Sikalastic®-391

Two-component, solvent-free, aromatic polyurethane traffic bearing wear and interior top coat

Sikalastic®-391 is a two-component, chemically cured, elastomeric aromatic polyurethane coating intended for use as the traffic bearing wear coat and interior top coat over Sikalastic®-390 polyurethane waterproofing membrane for pedestrian and vehicular traffic bearing applications.

• Low odor and fast turnaround
• Excellent crack-bridging properties and flexibility, even at low temperatures
• Resistant to abrasion and wear
• Resistant to deicing salts
• Range of standard colors

Usage

• Multi-story parking garages
• Parking decks and ramps
• Foot bridges and walkways
• Mechanical rooms
• Stadiums and arenas
• Plaza and rooftop decks
• Balconies

Advantages

• Low odor and fast turnaround
• Excellent crack-bridging properties and flexibility, even at low temperatures
• Resistant to abrasion and wear
• Resistant to deicing salts
• Range of standard colors

Packaging

5 gal. two component kit, 3.89 gal. comp. A, 1.11 gal. comp. B

Product Details

Product Information

12 months in original, unopened containers

Store dry at 41-95 °F (5-35 °C).

Condition material to 65-85 °F (18-30 °C) before using.

Technical Information

Resistant to deicing salts.

Application

Application Information

35-40 minutes

Consumption

100 ft²/gal at 16 wet mils (16 dry mils)
89 ft²/gal at 18 wet mils (18 dry mils)
64 ft²/gal at 25 wet mils (25 dry mils)

Coverage rates provided are intended to achieve required wet film thickness under optimal conditions. Additional material may be required depending on substrate surface roughness and porosity, material and substrate temperatures, and other site-dependent factors. This will result in a lower coverage

Application Steps

Premix Part A and Part B components using a low speed (400-600 rpm) mechanical mixer and Jiffy Paddle at slow speed to obtain uniform color, making sure to scrape the solids from the bottom and sides of the pail. Pour part B into Part A slowly and while mixing scrape the side of the container, Mix the combined material thoroughly until a homogenous mixture and uniform color is obtained (typically 3 minutes). Use care not to allow the entrapment of air into the mixture.

Apply at the recommended coverage rate (see appropriate System Guide) using a 3/16” notched squeegee or trowel, and back roll using a phenolic resin core roller. Apply aggregate evenly distributed at the appropriate rate immediately into wet coating and back roll if required (see appropriate System Guide). Allow coating to cure a minimum of 10 hours at 70 °F and 50 % R.H.; coating must be tack free between coats. Allow coating to cure for a minimum of 48 hours before opening to vehicular traffic.

Aggregate: Use clean, rounded or semi-angular oven dried quartz sand with a size gradation of 16-30 mesh for vehicular traffic and 20-40 mesh for pedestrian traffic, and a minimum hardness of 6.5 per the Moh’s scale. For high friction surfaces #3 flint aggregate can be used and evenly broadcasted to rejection . It should be supplied in pre-packaged bags and free of metallic or other impurities. Seeding of aggregate means an even, light broadcast short of refusal. Back roll aggregate where indicated. A full broadcast of aggregate means a heavy application to refusal. Any loose aggregate must be removed prior to re coating.

Removal

Remove liquid coating immediately with dry cloth. Once cured, coating can only be removed by mechanical means.

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