Polyurethane - 2 Component Pedestrian Traffic Coatings - Sikalastic®-390

Two-component, solvent-free, aromatic polyurethane waterproofing base coat

Sikalastic®-390 is a two-component, aromatic, chemically cured, elastomeric polyurethane coating intended for use as the waterproofing base coat under Sikalastic®-391 or Sikalastic®-395 intermediate and top coats and under Sikadur® 22 Lo-Mod epoxy wearing surfaces for pedestrian and vehicular traffic bearing applications.

• Low odor and fast turnaround
• Excellent crack-bridging properties and flexibility, even at low temperatures
• Impervious to water and deicing salts

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
• Impervious to water and deicing salts

Packaging

5 gal. two component kit, 3.33 gal. comp. A, 1.67 gal. comp. B.

Color

Brown

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 de-icing salts.

Application

Application Information

15-20 minutes

Consumption

80 f²/gal. at 20 wet mils (20 dry mils)

NOTE: Surface texture and porosity can affect coverage rate.

Application Steps

Premix Part A and Part B components using a slow speed (400-600 rpm) drill and mechanical mixer (Jiffy) 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. Extend base coat over entire area including previously detailed cracks and joints. Allow coating to cure a minimum of 5-6 hours at 70 °F and 50 % R.H.; base coat must be tack free before over coating.

Removal

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

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